Professor MICHELE DEGANO's Outputs (64)

Additive manufacturing of Nd-Fe-B permanent magnets and their application in electrical machines (2024)
Journal Article
Wu, J., Korman, O., Di Nardo, M., Degano, M., Gerada, C., Ashcroft, I., J.M. Hague, R., & T. Aboulkhair, N. (2024). Additive manufacturing of Nd-Fe-B permanent magnets and their application in electrical machines. IEEE Access, https://doi.org/10.1109/ACCESS.2024.3436643

Powder Bed Fusion - Laser Beam (PBF-LB), a form of additive manufacturing (AM) for Nd-Fe-B permanent magnets, is attracting substantial interest for its ability to process functional magnetic materials while capitalizing on AM's design flexibility an... Read More about Additive manufacturing of Nd-Fe-B permanent magnets and their application in electrical machines.

Fast Flux Maps Computation of Synchronous Reluctance Machines With and Without Permanent Magnets Assistance (2024)
Journal Article
Gallicchio, G., Nardo, M. D., Cupertino, F., Varvolik, V., Buticchi, G., Degano, M., & Gerada, C. (2024). Fast Flux Maps Computation of Synchronous Reluctance Machines With and Without Permanent Magnets Assistance. IEEE Transactions on Industry Applications, 60(5), 6725-6735. https://doi.org/10.1109/TIA.2024.3403967

This paper proposes a computational efficient and accurate hybrid analytical-finite element (FE) performance prediction methodology for synchronous reluctance (SyR) machines. The hybrid procedure consists in solving the d- and q-axis magnetic equival... Read More about Fast Flux Maps Computation of Synchronous Reluctance Machines With and Without Permanent Magnets Assistance.

Automated Maximum Torque per Ampere Identification for Synchronous Reluctance Machines with Limited Flux Linkage Information (2024)
Journal Article
Wang, S., Varvolik, V., Bao, Y., Aboelhassan, A., Degano, M., Buticchi, G., & Zhang, H. (2024). Automated Maximum Torque per Ampere Identification for Synchronous Reluctance Machines with Limited Flux Linkage Information. Machines, 12(2), Article 96. https://doi.org/10.3390/machines12020096

The synchronous reluctance machine is well-known for its highly nonlinear magnetic saturation and cross-saturation characteristics. For high performance and high-efficiency control, the flux-linkage maps and maximum torque per ampere table are of par... Read More about Automated Maximum Torque per Ampere Identification for Synchronous Reluctance Machines with Limited Flux Linkage Information.

Comprehensive Modulation Strategies for Synchronous Reluctance Motor Drives Used in Weak Grids (2024)
Journal Article
Wang, S., Prystupa, D., Bao, Y., Varvolik, V., Buticchi, G., Zhang, H., & Degano, M. (2024). Comprehensive Modulation Strategies for Synchronous Reluctance Motor Drives Used in Weak Grids. Energies, 17(3), Article 615. https://doi.org/10.3390/en17030615

Synchronous reluctance machines are considered a cost-effective solution for several industrial applications and present potential efficiency benefits compared to induction motors. In industrial applications, power supply oscillations can lead to sho... Read More about Comprehensive Modulation Strategies for Synchronous Reluctance Motor Drives Used in Weak Grids.

Fillet Radius Impact of Rectangular Insulated Wires on PDIV for Turn-to-Turn Insulation of Inverter-Fed Motors (2024)
Journal Article
Naderiallaf, H., Degano, M., Gerada, C., & Gerada, D. (2024). Fillet Radius Impact of Rectangular Insulated Wires on PDIV for Turn-to-Turn Insulation of Inverter-Fed Motors. IEEE Transactions on Dielectrics and Electrical Insulation, 31(4), 2084-2093. https://doi.org/10.1109/tdei.2024.3355032

This contribution elucidates the impact of the fillet radius, a geometric feature of rectangular insulated wires not commonly considered, on the partial discharge inception voltage (PDIV) in low-voltage machine turn-to-turn winding insulation. Initia... Read More about Fillet Radius Impact of Rectangular Insulated Wires on PDIV for Turn-to-Turn Insulation of Inverter-Fed Motors.

Reduced Computational Burden of Modulated Model-Predictive Control for Synchronous Reluctance Motor Drive Applications (2023)
Presentation / Conference Contribution
Riccio, J., Karamanakos, P., Degano, M., Gerada, C., & Zanchetta, P. (2023). Reduced Computational Burden of Modulated Model-Predictive Control for Synchronous Reluctance Motor Drive Applications. In 2023 IEEE Energy Conversion Congress and Exposition (ECCE) (4995-5002). https://doi.org/10.1109/ECCE53617.2023.10362110

This paper introduces a novel geometric approach to significantly reduce the computational burden of modulated predictive controllers while maintaining the same steady-state performance and satisfactory dynamic behavior. The proposed geometric method... Read More about Reduced Computational Burden of Modulated Model-Predictive Control for Synchronous Reluctance Motor Drive Applications.

Assessment of Edgewise Insulated Wire Bend Radius Impact on Dielectric Properties of Turn-to-Turn Insulation through Thermal Ageing (2023)
Journal Article
Naderiallaf, H., Degano, M., & Gerada, C. (2023). Assessment of Edgewise Insulated Wire Bend Radius Impact on Dielectric Properties of Turn-to-Turn Insulation through Thermal Ageing. IEEE Transactions on Dielectrics and Electrical Insulation, https://doi.org/10.1109/TDEI.2023.3309780

This study aims to evaluate the impact of the bending radius of edgewise insulated wires on dielectric properties such as partial discharge inception voltage (PDIV), partial discharge extinction voltage (PDEV), dielectric dissipation factor (DDF), an... Read More about Assessment of Edgewise Insulated Wire Bend Radius Impact on Dielectric Properties of Turn-to-Turn Insulation through Thermal Ageing.

PDIV Modelling for Rectangular Wire Turn-to-Turn Insulation of Inverter-Fed Motors through Thermal Ageing (2023)
Journal Article
Naderiallaf, H., Degano, M., & Gerada, C. (2023). PDIV Modelling for Rectangular Wire Turn-to-Turn Insulation of Inverter-Fed Motors through Thermal Ageing. IEEE Transactions on Dielectrics and Electrical Insulation, 1-10. https://doi.org/10.1109/tdei.2023.3307048

This contribution develops the partial discharge inception voltage (PDIV)-FEM-based model based on Schumann’s streamer inception criterion (SCSIC) with respect to thermal ageing time (TAGT) or the insulation lifetime for the turn-to-turn insulation o... Read More about PDIV Modelling for Rectangular Wire Turn-to-Turn Insulation of Inverter-Fed Motors through Thermal Ageing.

Fast Assessment of Rotor Barrier Dimensional Allowances in Synchronous Reluctance Machines (2023)
Journal Article
Madariaga, C., Gallardo, C., Tapia, J. A., Jara, W., Escobar, A., & Degano, M. (2023). Fast Assessment of Rotor Barrier Dimensional Allowances in Synchronous Reluctance Machines. IEEE Access, 11, 58349-58358. https://doi.org/10.1109/access.2023.3284753

Tolerance analysis on synchronous reluctance machines (SynRM) is mandatory if accurate refinements of the rotor structure are adopted, a must for low-ripple applications However, the impact of manufacturing/dimensional tolerances or material degradat... Read More about Fast Assessment of Rotor Barrier Dimensional Allowances in Synchronous Reluctance Machines.

Rotor Vibration Control using Multi-Three-Phase Permanent Magnet Synchronous Machines (2023)
Presentation / Conference Contribution
Di Nardo, M., Ilkhani, M. R., Wang, M., Degano, M., Gerada, C., Sala, G., …Hoppert, M. (2023). Rotor Vibration Control using Multi-Three-Phase Permanent Magnet Synchronous Machines. In 2023 IEEE International Electric Machines & Drives Conference (IEMDC). https://doi.org/10.1109/IEMDC55163.2023.10238954

This paper investigates the possibility to control the radial displacements of the shaft of an electrical machine equipped with a multi-three-phase winding arrangement with the aim of reducing the related vibrations. A comprehensive dynamic modeling... Read More about Rotor Vibration Control using Multi-Three-Phase Permanent Magnet Synchronous Machines.

Design of an aircraft generator with radial force control. (2023)
Journal Article
Brecher, C., Neus, S., Gärtner, M., Eckel, H.-M., Hoppert, M., James, B., Gerada, C., Degano, M., Ilkhani, M. R., & Di Nardo, M. (2023). Design of an aircraft generator with radial force control. Open Research Europe, 2, Article 73. https://doi.org/10.12688/openreseurope.14684.3

With the increasing electrical energy demands in aviation propulsion systems, the increase in the onboard generators’ power density is inevitable. During the flight, forces coming from the gearbox or gyroscopic forces generated by flight manoeuvres l... Read More about Design of an aircraft generator with radial force control..

Radical technology innovations for high‐speed transport; ePlanes to replace rail? (2023)
Journal Article
Riley, P. H., Degano, M., & Gerada, C. (2023). Radical technology innovations for high‐speed transport; ePlanes to replace rail?. IET Electrical Systems in Transportation, 13(1), Article 12061. https://doi.org/10.1049/els2.12061

This paper evaluates various modes of transport against the dual requirements of Net-Zero carbon emissions and user convenience, in particular, speed of travel and cost of transportation. Results show that when operated across a whole country, batter... Read More about Radical technology innovations for high‐speed transport; ePlanes to replace rail?.

Comparison of Aluminium and Copper Conductors in Hairpin Winding Design for High Power Density Traction Motors (2022)
Presentation / Conference Contribution
Petrelli, G., Cui, M., Zou, T., Sala, G., La Rocca, A., Barater, D., …Gerada, C. (2022). Comparison of Aluminium and Copper Conductors in Hairpin Winding Design for High Power Density Traction Motors. In 2022 International Conference on Electrical Machines (ICEM) (1635-1641). https://doi.org/10.1109/icem51905.2022.9910796

Hairpin windings are becoming current/next generation solutions for traction motors of electric vehicles due to inherently reduced DC power losses and improved heat dissipation capability compared with random windings. Copper-based conductor has been... Read More about Comparison of Aluminium and Copper Conductors in Hairpin Winding Design for High Power Density Traction Motors.

Power Loss and Performance Analysis of a Permanent Magnet Synchronous Motor for Actuator Applications (2022)
Presentation / Conference Contribution
Tameemi, A., Degano, M., Di Nardo, M., Murataliyev, M., Gerada, D., Xu, Z., & Gerada, C. (2022). Power Loss and Performance Analysis of a Permanent Magnet Synchronous Motor for Actuator Applications. In 2022 International Conference on Electrical Machines (ICEM) (807-813). https://doi.org/10.1109/icem51905.2022.9910911

Permanent magnet synchronous motors are very suitable in applications demanding high power density with high performance requirements, such as in aerospace actuators. Achieving high performance targets while keeping the total weight of the electrical... Read More about Power Loss and Performance Analysis of a Permanent Magnet Synchronous Motor for Actuator Applications.

Decoupled Discrete Current Control for AC Drives at Low Sampling-to-Fundamental Frequency Ratios (2022)
Journal Article
Wang, M., Buticchi, G., Li, J., Gu, C., Gerada, D., Degano, M., …Geradab, C. (2022). Decoupled Discrete Current Control for AC Drives at Low Sampling-to-Fundamental Frequency Ratios. IEEE Journal of Emerging and Selected Topics in Power Electronics, 11(2), https://doi.org/10.1109/jestpe.2022.3179184

Implementation of proportional-integral (PI) controllers in synchronous reference frame (SRF) is a well-established current control solution for electric drives. It is a general and effective method in digital control as long as the ratio of Sampling... Read More about Decoupled Discrete Current Control for AC Drives at Low Sampling-to-Fundamental Frequency Ratios.

On the Use of Topology Optimization for Synchronous Reluctance Machines Design (2022)
Journal Article
Korman, O., Di Nardo, M., Degano, M., & Gerada, C. (2022). On the Use of Topology Optimization for Synchronous Reluctance Machines Design. Energies, 15(10), Article 3719. https://doi.org/10.3390/en15103719

Synchronous reluctance (SynRel) machines are considered one of the promising and cost-effective solutions to many industrial and mobility applications. Nonetheless, achieving an optimal design is challenging due to the complex correlation between geo... Read More about On the Use of Topology Optimization for Synchronous Reluctance Machines Design.

Synchronous Reluctance Machines: A Comprehensive Review and Technology Comparison (2022)
Journal Article
Murataliyev, M., Degano, M., Nardo, M. D., Bianchi, N., & Gerada, C. (2022). Synchronous Reluctance Machines: A Comprehensive Review and Technology Comparison. Proceedings of the IEEE, 110(3), 382-399. https://doi.org/10.1109/jproc.2022.3145662

In the last decade, the trend toward higher efficiency and higher torque density electrical machines (EMs) without permanent magnets (PMs) for the industrial sector has rapidly increased. This work discusses the latest research and industrial advance... Read More about Synchronous Reluctance Machines: A Comprehensive Review and Technology Comparison.

Improved Thermal Modeling and Experimental Validation of Oil-Flooded High-Performance Machines with Slot-Channel Cooling (2021)
Journal Article
Zhang, F., Gerada, D., Xu, Z., Zhang, X., Zhang, H., Gerada, C., …Degano, M. (2022). Improved Thermal Modeling and Experimental Validation of Oil-Flooded High-Performance Machines with Slot-Channel Cooling. IEEE Transactions on Transportation Electrification, 8(1), 312-324. https://doi.org/10.1109/TTE.2021.3106819

Thermal management is often considered a bottleneck in the pursuit of the next-generation electrical machines for electrified transportation with a step change in power density. Slot-channel cooling is considered to be an effective cooling technique,... Read More about Improved Thermal Modeling and Experimental Validation of Oil-Flooded High-Performance Machines with Slot-Channel Cooling.

Process-structure-property relationships in laser powder bed fusion of permanent magnetic Nd-Fe-B (2021)
Journal Article
Wu, J., Aboulkhair, N. T., Degano, M., Ashcroft, I., & Hague, R. J. (2021). Process-structure-property relationships in laser powder bed fusion of permanent magnetic Nd-Fe-B. Materials and Design, 209, Article 109992. https://doi.org/10.1016/j.matdes.2021.109992

Laser powder-bed fusion (L-PBF), as an additive manufacturing (AM) technique, has demonstrated excellent capabilities in achieving degrees of freedom in manufacturing that are otherwise unattainable. The potential of combining Nd-Fe-B as a permanent... Read More about Process-structure-property relationships in laser powder bed fusion of permanent magnetic Nd-Fe-B.

Optimised Design of Permanent Magnet Assisted Synchronous Reluctance Machines for Household Appliances (2021)
Journal Article
Degano, M., Murataliyev, M., Shuo, W., Barater, D., Buticchi, G., Jara, W., …Gerada, C. (2021). Optimised Design of Permanent Magnet Assisted Synchronous Reluctance Machines for Household Appliances. IEEE Transactions on Energy Conversion, 36(4), 3084-3095. https://doi.org/10.1109/tec.2021.3076675

This paper is focused on the design, optimisation and control of a permanent magnet assisted synchronous reluctance machine (PMaSynRel) for low cost high efficiency household appliances, in particular a motor for washing machine. The design and optim... Read More about Optimised Design of Permanent Magnet Assisted Synchronous Reluctance Machines for Household Appliances.

Permanent Magnet Reduction by Current Harmonics Injection for Surface Permanent Magnet Machines (2021)
Presentation / Conference Contribution
De Gaetano, D., Sala, G., Degano, M., & Gerada, C. (2021). Permanent Magnet Reduction by Current Harmonics Injection for Surface Permanent Magnet Machines. In 2021 IEEE Workshop on Electrical Machines Design, Control and Diagnosis (WEMDCD) (137-142). https://doi.org/10.1109/wemdcd51469.2021.9425662

This paper presents the analysis of multi-harmonic current injection in multi-three phase surface permanent magnet (SPM) machines. An analytical model, extended to a generic harmonic order, is used to describe and determine the no load flux density,... Read More about Permanent Magnet Reduction by Current Harmonics Injection for Surface Permanent Magnet Machines.

Homothetic Design in Synchronous Reluctance Machines and Effects on Torque Ripple (2020)
Journal Article
Murataliyev, M., Degano, M., Di Nardo, M., Bianchi, N., Tessarolo, A., Jara, W., …Gerada, C. (2021). Homothetic Design in Synchronous Reluctance Machines and Effects on Torque Ripple. IEEE Transactions on Energy Conversion, 36(3), 2195-2205. https://doi.org/10.1109/TEC.2020.3042441

This paper presents a novel design concept for Synchronous Reluctance (SynRel) machines aimed at reducing the torque ripple. Two general sizing approaches based on the homothetic scaling principle are defined and compared. An in depth analysis on the... Read More about Homothetic Design in Synchronous Reluctance Machines and Effects on Torque Ripple.

Influence of Rotor Design on Electromagnetic Performance in Interior Permanent Magnet Machines (2020)
Presentation / Conference Contribution
Transi, T., Murataliyev, M., Degano, M., Preci, E., Gerada, D., & Gerada, C. (2020). Influence of Rotor Design on Electromagnetic Performance in Interior Permanent Magnet Machines. . https://doi.org/10.1109/iecon43393.2020.9255237

Nowadays, Interior Permanent Magnet Synchronous Machines (IPMSM) are widely adopted in various sectors such as automotive, railway or public transportation (e- buses, trams, etc.). Among the benefits that these machines present, they offer a number o... Read More about Influence of Rotor Design on Electromagnetic Performance in Interior Permanent Magnet Machines.

A Complete Equivalent Circuit for Linear Induction Motors With Laterally Asymmetric Secondary for Urban Railway Transit (2020)
Journal Article
Lv, G., Zeng, D., Zhou, T., & Degano, M. (2021). A Complete Equivalent Circuit for Linear Induction Motors With Laterally Asymmetric Secondary for Urban Railway Transit. IEEE Transactions on Energy Conversion, 36(2), 1014-1022. https://doi.org/10.1109/tec.2020.3026334

Since the linear induction motor commonly work with a laterally asymmetric secondary as it is applied to pull rail vehicles, this paper presents a complete equivalent circuit model considering the asymmetry to predict thrust, vertical and transversal... Read More about A Complete Equivalent Circuit for Linear Induction Motors With Laterally Asymmetric Secondary for Urban Railway Transit.

Impact of Star Connection Layouts on the Control of Multiphase Induction Motor Drives Under Open-Phase Fault (2020)
Journal Article
Sala, G., Mengoni, M., Rizzoli, G., Degano, M., Zarri, L., & Tani, A. (2021). Impact of Star Connection Layouts on the Control of Multiphase Induction Motor Drives Under Open-Phase Fault. IEEE Transactions on Power Electronics, 36(4), 3717-3726. https://doi.org/10.1109/tpel.2020.3024205

This paper presents a post-fault control algorithm that minimizes the stator Joule losses in multiphase induction machines under an open-phase fault and for different star connection layouts. The key novelty is that the algorithm can be applied to an... Read More about Impact of Star Connection Layouts on the Control of Multiphase Induction Motor Drives Under Open-Phase Fault.

Rotor Position Tracking Control for Low Speed Operation of Direct-Drive PMSM Servo System (2020)
Journal Article
Bu, F., Xuan, F., Yang, Z., Gao, Y., Pan, Z., Degano, M., & Gerada, C. (2021). Rotor Position Tracking Control for Low Speed Operation of Direct-Drive PMSM Servo System. IEEE/ASME Transactions on Mechatronics, 26(2), 1129-1139. https://doi.org/10.1109/tmech.2020.3019039

In this paper, a rotor position tracking control (RPTC) strategy is proposed to effectively reduce the speed fluctuation for a direct-drive permanent magnet synchronous motor (DD-PMSM) servo system operating at low speed with different torque disturb... Read More about Rotor Position Tracking Control for Low Speed Operation of Direct-Drive PMSM Servo System.

Multi-Sector Windings For Bearing Relief E-Machine: Saturation and Cross Coupling Effects (2020)
Presentation / Conference Contribution
Mahmoud, H., Valente, G., Degano, M., Nardo, M. D., Gerada, C., & James, B. (2020). Multi-Sector Windings For Bearing Relief E-Machine: Saturation and Cross Coupling Effects. . https://doi.org/10.1109/icem49940.2020.9270761

The key driving elements for any electrical machine (EM) used in aerospace and other safety critical applications are the reliability, mass, volume, and efficiency. To reduce mass/volume while satisfying the power required, the option is to increase... Read More about Multi-Sector Windings For Bearing Relief E-Machine: Saturation and Cross Coupling Effects.

Rotor Design Optimization of Squirrel Cage Induction Motor - Part I: Problem Statement (2020)
Journal Article
Marfoli, A., Di Nardo, M., Degano, M., Gerada, C., & Chen, W. (2021). Rotor Design Optimization of Squirrel Cage Induction Motor - Part I: Problem Statement. IEEE Transactions on Energy Conversion, 36(2), 1271-1279. https://doi.org/10.1109/tec.2020.3019934

Squirrel cage induction motor is the most widely adopted electrical machine in applications directly fed by the main grid. The analysis, design and optimization of this machine topology has been addressed by a considerable amount of literature over t... Read More about Rotor Design Optimization of Squirrel Cage Induction Motor - Part I: Problem Statement.

A Digital Internal Model Current Controller for Salient Machines (2020)
Journal Article
Petric, I. Z., Vukosavic, S. N., DEgano, M., & Galassini, A. (2021). A Digital Internal Model Current Controller for Salient Machines. IEEE Transactions on Industrial Electronics, 68(6), 4703-4717. https://doi.org/10.1109/tie.2020.2988234

The performance of anisotropic electrical machines is strongly dependent on the current loop characteristics. The problems for achieving robustness and fast response, without overshoot and oscillations, are mainly related to different values and beha... Read More about A Digital Internal Model Current Controller for Salient Machines.

A Novel Sizing Approach for Synchronous Reluctance Machines (2020)
Journal Article
Murataliyev, M., Degano, M., & Galea, M. (2021). A Novel Sizing Approach for Synchronous Reluctance Machines. IEEE Transactions on Industrial Electronics, 68(3), 2083-2095. https://doi.org/10.1109/tie.2020.2975461

This paper presents a simple analytical model for the sizing of Synchronous Reluctance (SynRel) machines. The accuracy of the method is achieved by modelling a simple rotor geometry that presents all the characteristics of a real machine. The analyti... Read More about A Novel Sizing Approach for Synchronous Reluctance Machines.

Speed Ripple Reduction of Direct-Drive PMSM Servo System at Low-Speed Operation Using Virtual Cogging Torque Control Method (2020)
Journal Article
Bu, F., Yang, Z., Gao, Y., Pan, Z., Pu, T., Degano, M., & Gerada, C. (2021). Speed Ripple Reduction of Direct-Drive PMSM Servo System at Low-Speed Operation Using Virtual Cogging Torque Control Method. IEEE Transactions on Industrial Electronics, 68(1), 160-174. https://doi.org/10.1109/tie.2019.2962400

This paper presents a virtual cogging torque (VCT) control method to reduce the speed ripple of direct-drive permanent magnet synchronous machine (DD-PMSM) servo system under low-speed conditions. Compared with other factors, at low speeds, the coggi... Read More about Speed Ripple Reduction of Direct-Drive PMSM Servo System at Low-Speed Operation Using Virtual Cogging Torque Control Method.

Fault-Tolerant Electrical Machines for Transport Applications (2019)
Presentation / Conference Contribution
Ismagilov, F., Gerada, C., Degano, M., Gurevich, O., Guliyenko, A., Vavilov, V., & Gusakov, D. (2019). Fault-Tolerant Electrical Machines for Transport Applications. . https://doi.org/10.1109/ICOECS46375.2019.8949914

This paper provides an overview of-fault-Tolerant electric machine for transport applications. A number of motor failure cases and methods to prevent or minimize their impact on the drive system are considered. The fault tolerance of bearings, stator... Read More about Fault-Tolerant Electrical Machines for Transport Applications.

Study of Regenerative Braking Effects in a Small Electric Race Car using Energetic Macroscopic Representation (2019)
Presentation / Conference Contribution
Transi, T., Pereirinha, P. G., Bouscayrol, A., & Degano, M. (2019). Study of Regenerative Braking Effects in a Small Electric Race Car using Energetic Macroscopic Representation. In 2019 International Young Engineers Forum (YEF-ECE) (106-111). https://doi.org/10.1109/YEF-ECE.2019.8740815

The objective of this work is the modelization of an electric Formula Student car through Energetic Macroscopic Representation (EMR) graphical formalism and to study the effect of regenerative braking. EMR is used to easily define a control design an... Read More about Study of Regenerative Braking Effects in a Small Electric Race Car using Energetic Macroscopic Representation.

A Novel Concept of Ribless Synchronous Reluctance Motor for Enhanced Torque Capability (2019)
Journal Article
Bao, Y., Degano, M., Wang, S., Chuan, L., Xu, Z., Zhang, H., & Gerada, C. (2020). A Novel Concept of Ribless Synchronous Reluctance Motor for Enhanced Torque Capability. IEEE Transactions on Industrial Electronics, 67(4), 2553-2563. https://doi.org/10.1109/tie.2019.2914616

The rotor structure of synchronous reluctance machines (SynRel) is conventionally retained mechanically by iron ribs. In this paper a novel structure for high speed synchronous reluctance rotor is presented. The novelty of this work is the proof of a... Read More about A Novel Concept of Ribless Synchronous Reluctance Motor for Enhanced Torque Capability.

Control Strategy for Five-Phase Dual-Stator Winding Induction Starter/Generator System (2019)
Journal Article
Liu, H., Bu, F., Huang, W., Liu, L., Hu, Y., Degano, M., & Gerada, C. (2020). Control Strategy for Five-Phase Dual-Stator Winding Induction Starter/Generator System. IEEE Transactions on Industrial Electronics, 67(4), 2607-2617. https://doi.org/10.1109/TIE.2019.2912767

This paper presents an integrated control strategy for a starter/generator (S/G) system based on five-phase dual-stator winding induction machine (FPDWIM). The FPDWIM has a cage-type rotor and two sets of stator windings. One is a five-phase control... Read More about Control Strategy for Five-Phase Dual-Stator Winding Induction Starter/Generator System.

An accurate wide-speed range control method of IPMSM considering resistive voltage drop and magnetic saturation (2019)
Journal Article
Wang, S., Kang, J., Degano, M., Galassini, A., & Gerada, C. (2020). An accurate wide-speed range control method of IPMSM considering resistive voltage drop and magnetic saturation. IEEE Transactions on Industrial Electronics, 67(4), 2630-2641. https://doi.org/10.1109/TIE.2019.2912766

This paper deals with the high accurate current set-points solution for Interior Permanent-Magnet Synchronous Motors (IPMSM) in wide-speed range applications. Considering voltage and current constraints, the operating regions can be divided into Maxi... Read More about An accurate wide-speed range control method of IPMSM considering resistive voltage drop and magnetic saturation.

Asymmetrical Flux Density Distribution in Stator Teeth of Surface Permanent Magnet Machines (2019)
Presentation / Conference Contribution
Sala, G., De Gaetano, D., Degano, M., & Gerada, C. (2019). Asymmetrical Flux Density Distribution in Stator Teeth of Surface Permanent Magnet Machines. In Proceedings - 2019 IEEE Workshop on Electrical Machines Design, Control and Diagnosis (WEMDCD) (29-33). https://doi.org/10.1109/WEMDCD.2019.8887831

This work is showing in detail the flux density behaviour in the stator teeth of a synchronous machine. A 3-phase Surface Permanent Magnet (SPM) motor is considered. These motors are widely employed in applications where high efficiency and power den... Read More about Asymmetrical Flux Density Distribution in Stator Teeth of Surface Permanent Magnet Machines.

A resolver-to-digital conversion method based on third-order rational fraction polynomial approximation for PMSM control (2018)
Journal Article
Wang, S., Kang, J., Degano, M., & Buticchi, G. (2018). A resolver-to-digital conversion method based on third-order rational fraction polynomial approximation for PMSM control. IEEE Transactions on Industrial Electronics, 66(8), 6383-6392. https://doi.org/10.1109/TIE.2018.2884209

—In this paper, a cost-effective and highly accurate resolver-to-digital conversion (RDC) method is presented. The core of the idea is to apply a third-order rational fraction polynomial approximation (TRFPA) for the conversion of sinusoidal signals... Read More about A resolver-to-digital conversion method based on third-order rational fraction polynomial approximation for PMSM control.

Synchronous Reluctance Motor Iron Losses: Analytical Model and Optimization (2018)
Presentation / Conference Contribution
Mahmoud, H., Degano, M., Bacco, G., Bianchi, N., & Gerada, C. (2018). Synchronous Reluctance Motor Iron Losses: Analytical Model and Optimization. In 2018 IEEE Energy Conversion Congress and Exposition (ECCE) (1640-1647). https://doi.org/10.1109/ECCE.2018.8558292

The complex rotor structure of synchronous reluctance machines causes a high harmonic content in the air-gap flux density and then flux density fluctuations in different iron parts. The importance of determining accurately the total iron losses in th... Read More about Synchronous Reluctance Motor Iron Losses: Analytical Model and Optimization.

Multi-port power conversion systems for the more electric aircraft (2018)
Presentation / Conference Contribution
Gu, C., Zhang, H., Buticchi, G., Sala, G., Galassini, A., Papadopoulos, S., & Degano, M. (2018). Multi-port power conversion systems for the more electric aircraft. . https://doi.org/10.1109/IECON.2018.8592915

In the framework of the More Electric Aircraft (MEA), weight reduction and energy efficiency constitute the key figures. In addition to these requirements, the safety and the continuity of operation is of critical importance. These sets of desired fe... Read More about Multi-port power conversion systems for the more electric aircraft.

A Novel Newton-Raphson-Based Searching Method for the MTPA Control of Pmasynrm Considering Magnetic and Cross Saturation (2018)
Presentation / Conference Contribution
Wang, S., Degano, M., Kang, J., Galassini, A., & Gerada, C. (2018). A Novel Newton-Raphson-Based Searching Method for the MTPA Control of Pmasynrm Considering Magnetic and Cross Saturation. In Proceedings 2018 XIII International Conference on Electrical Machines (ICEM) (1360-1366). https://doi.org/10.1109/ICELMACH.2018.8506853

Maximum torque per ampere control (MTPA) takes full advantage of the reluctance torque aiming at the minimum copper loss, which can increase the torque output under the minimum current conditions. The traditional MTPA method makes use of equations wi... Read More about A Novel Newton-Raphson-Based Searching Method for the MTPA Control of Pmasynrm Considering Magnetic and Cross Saturation.

Eccentric reluctance and permanent magnets synchronous machines comparison (2018)
Journal Article
Mahmoud, H., Bianchi, N., Degano, M., Al-Ani, M., & Gerada, C. (2018). Eccentric reluctance and permanent magnets synchronous machines comparison. IEEE Transactions on Industry Applications, 54(6), 5760-5771. https://doi.org/10.1109/TIA.2018.2848278

This paper deals with a comparative study between reluctance (REL), permanent magnet assisted reluctance (PMAREL), and surface mounted permanent magnet synchronous machines with rotor eccentricity. Static, dynamic, and combined eccentricity cases are... Read More about Eccentric reluctance and permanent magnets synchronous machines comparison.

Design and losses analysis of a high power density machine for flooded pump applications (2018)
Journal Article
Al-Timimy, A., Giangrande, P., Degano, M., Zeyuan, X., Galea, M., Gerada, C., Lo Calzo, G., Zhang, H., & Xia, L. (2019). Design and losses analysis of a high power density machine for flooded pump applications. IEEE Transactions on Industry Applications, 54(4), 3260-3270. https://doi.org/10.1109/TIA.2018.2821623

This paper describes the design process of a 10 kW 19000 rpm high power density surface mounted permanent magnet synchronous machine for a directly coupled pump application. In order to meet the required specifications, a compact machine, with coolin... Read More about Design and losses analysis of a high power density machine for flooded pump applications.

Synchronous reluctance motor iron losses: considering machine non-linearity at MTPA, FW, and MTPV operating conditions (2018)
Journal Article
Mahmoud, H., Bacco, G., Degano, M., Bianchi, N., & Gerada, C. (2018). Synchronous reluctance motor iron losses: considering machine non-linearity at MTPA, FW, and MTPV operating conditions. IEEE Transactions on Energy Conversion, 33(3), 1402-1410. https://doi.org/10.1109/TEC.2018.2811543

Synchronous reluctance machine has high flux density fluctuations in the iron due to the high harmonics results from the rotor anisotropy. Thus, an accurate computation of the iron losses is of paramount importance, especially during the design stage... Read More about Synchronous reluctance motor iron losses: considering machine non-linearity at MTPA, FW, and MTPV operating conditions.

Considerations on the effects that core material machining has on an electrical machine's performance (2018)
Journal Article
Al-Timimy, A., Vakil, G., Degano, M., Giangrande, P., Gerada, C., & Galea, M. (2018). Considerations on the effects that core material machining has on an electrical machine's performance. IEEE Transactions on Energy Conversion, 33(3), 1154-1163. https://doi.org/10.1109/TEC.2018.2808041

An often-overlooked aspect during the development process of electrical machines, is the validity and accuracy of the machine material properties being used at the design stage. Designers usually consider the data provided by the materials supplier,... Read More about Considerations on the effects that core material machining has on an electrical machine's performance.

The impact of impulsive voltage waveforms on the electrical insulation of actuators for more electrical aircraft (MEA) (2017)
Presentation / Conference Contribution
Cavallini, A., Lusaurdi, L., & Degano, M. (in press). The impact of impulsive voltage waveforms on the electrical insulation of actuators for more electrical aircraft (MEA).

To reduce the size and weight of aircraft actuators, wide band-gap semiconductor devices (SiC and GaN) are the most promising solution. These devices have switching times well below those of silicon devices. Very short rise times may enhance the elec... Read More about The impact of impulsive voltage waveforms on the electrical insulation of actuators for more electrical aircraft (MEA).

Axial eccentric SynRel and SPM motors analytical models validation using 3D finite element (2017)
Presentation / Conference Contribution
Mahmoud, H., Al-Timimy, A., Degano, M., Di Nardo, M., Bianchi, N., & Gerada, C. (2017). Axial eccentric SynRel and SPM motors analytical models validation using 3D finite element. In Proceedings of the 2017 - IEEE 11th International Symposium on Diagnostics for Electrical Machines, Power Electronics and Drives, SDEMPED 2017 (38-44). https://doi.org/10.1109/DEMPED.2017.8062331

This paper deals with the uniform and non-uniform axial eccentricity analyses of the surface mounted permanent magnet and synchronous reluctance machines. The analyses are carried out using an analytical model for each considered machine. Being the a... Read More about Axial eccentric SynRel and SPM motors analytical models validation using 3D finite element.

Comparison of flux observers for sensorless control of permanent magnet assisted SynRel motors (2016)
Presentation / Conference Contribution
Concari, L., Toscani, A., Barater, D., Concari, C., Degano, M., & Pellegrino, G. (2016). Comparison of flux observers for sensorless control of permanent magnet assisted SynRel motors. . https://doi.org/10.1109/IECON.2016.7793122

This paper proposes the comparison among different sensorless position estimation strategies suitable for permanent magnet assisted synchronous reluctance machine drives. A machine of such type was designed and optimized aiming at improving its senso... Read More about Comparison of flux observers for sensorless control of permanent magnet assisted SynRel motors.

History and recent advancements of electric propulsion and integrated electrical power systems for commercial & naval vessels (2016)
Presentation / Conference Contribution
Yang, T., Cox, T., Degano, M., Bozhko, S., & Gerada, C. (2016). History and recent advancements of electric propulsion and integrated electrical power systems for commercial & naval vessels.

Due to developments in power electronics, electric machines, energy storage and control, electric propulsion and integrated electrical power systems have become major trends for commercial and naval vessels. This is mainly due to the fact that the us... Read More about History and recent advancements of electric propulsion and integrated electrical power systems for commercial & naval vessels.

Trade-off analysis and design of a high power density PM machine for flooded industrial pump (2016)
Presentation / Conference Contribution
Al-Timimy, A., Degano, M., Xu, Z., Lo Calzo, G., Giangrande, P., Galea, M., …Zhang, H. (2016). Trade-off analysis and design of a high power density PM machine for flooded industrial pump.

This paper presents the trade-off analysis and design of a high power-density machine for industrial pump applications. The developed permanent magnet synchronous machine drives an electric, oil flooded pump. Different slot/pole combination and windi... Read More about Trade-off analysis and design of a high power density PM machine for flooded industrial pump.

Thermal management of a permanent magnet motor for an directly coupled pump (2016)
Presentation / Conference Contribution
Xu, Z., Al-Timimy, A., Degano, M., Giangrande, P., Lo Calzo, G., Zhang, H., …Gerada, C. (2016). Thermal management of a permanent magnet motor for an directly coupled pump.

A high speed permanent magnet motor is designed for a flooded industrial pump. Oil in the pump is used to cool the motor. Due to the limitation of space and mass requirement for the application, thermal management is one of the main challenges. This... Read More about Thermal management of a permanent magnet motor for an directly coupled pump.

Design and optimization of a high power density machine for flooded industrial pump (2016)
Presentation / Conference Contribution
Al-Timimy, A., Degano, M., Giangrande, P., Lo Calzo, G., Xu, Z., Galea, M., …Xia, L. (2016). Design and optimization of a high power density machine for flooded industrial pump.

This paper presents the design optimization procedure of a high power-density, permanent magnet synchronous machine for industrial pump applications. The designed machine drives an electric, oil flooded pump. In order to achieve higher torque-density... Read More about Design and optimization of a high power density machine for flooded industrial pump.

End barrier shape optimizations and sensitivity analysis of synchrnous reluctance machines (2015)
Presentation / Conference Contribution
Galea, M., Di Nardo, M., Gerada, C., Palmieri, M., Gerada, D., Cupertino, F., Degano, M., & Bianchi, N. (2015, November). End barrier shape optimizations and sensitivity analysis of synchrnous reluctance machines. Presented at End barrier shape optimizations and sensitivity analysis of synchrnous reluctance machines, Yokohama, Japan

This paper presents an extensive study on the electromagnetic and structural influences of the end barrier shape of a Synchronous Reluctance Machine (SynRel). One of the most challenging tasks in designing these machines is to achieve a smooth torque... Read More about End barrier shape optimizations and sensitivity analysis of synchrnous reluctance machines.

Selection criteria and robust optimization of a traction PM-Assisted Synchronous Reluctance motor (2015)
Journal Article
Degano, M., Carraro, M., & Bianchi, N. (2015). Selection criteria and robust optimization of a traction PM-Assisted Synchronous Reluctance motor. IEEE Transactions on Industry Applications, 51(6), https://doi.org/10.1109/TIA.2015.2443091

In the coming years, the electrification and the deployment of the electric motors in the urban transports will become a more and more widespread reality. The optimization stage of the electric motors usually does not consider in detail the real driv... Read More about Selection criteria and robust optimization of a traction PM-Assisted Synchronous Reluctance motor.

PM synchronous machine comparison for light electric vehicles (2014)
Presentation / Conference Contribution
Carraro, E., Degano, M., Morandin, M., & Bianchi, N. (2014). PM synchronous machine comparison for light electric vehicles. . https://doi.org/10.1109/IEVC.2014.7056200

The research of rare-earth free alternatives, such as ferrite, hot pressed NdFeB Permanent Magnet Assisted Synchronous Reluctance (PMASR) motor or pure reluctance motor, has potentially interesting implications especially in the perspective of indust... Read More about PM synchronous machine comparison for light electric vehicles.

Robust optimization of a traction PMASR motor according to given driving cycles (2014)
Presentation / Conference Contribution
Degano, M., Carraro, E., & Bianchi, N. (2014). Robust optimization of a traction PMASR motor according to given driving cycles. . https://doi.org/10.1109/ICELMACH.2014.6960192

In the coming years, the electrification and the deployment of the electric motors in the urban transports will become a reality more and more widespread. The optimization stage of the electric motors usually does not consider in detail the real driv... Read More about Robust optimization of a traction PMASR motor according to given driving cycles.

On the analytical estimation of the airgap field in synchronous reluctance machine (2014)
Presentation / Conference Contribution
Tessarolo, A., Degano, M., & Bianchi, N. (2014). On the analytical estimation of the airgap field in synchronous reluctance machine. . https://doi.org/10.1109/ICELMACH.2014.6960187

Synchronous reluctance motors with rotor flux barriers are a promising type of electric machines thanks to various benefits, among the others, the absence of permanent magnets and rotor excitation. A challenge in the study of these motors is the accu... Read More about On the analytical estimation of the airgap field in synchronous reluctance machine.

Sensitivity Analysis of Torque Ripple Reduction of Synchronous Reluctance and Interior PM Motors (2014)
Journal Article
Bianchi, N., Degano, M., & Fornasiero, E. (2015). Sensitivity Analysis of Torque Ripple Reduction of Synchronous Reluctance and Interior PM Motors. IEEE Transactions on Industry Applications, 51(1), 187-195. https://doi.org/10.1109/TIA.2014.2327143

The main drawback of reluctance machines is a high torque ripple, due to the interaction between the stator magnetomotive force and the rotor structure. Adopting a rotor configuration characterized by several flux barriers per pole, there is a high i... Read More about Sensitivity Analysis of Torque Ripple Reduction of Synchronous Reluctance and Interior PM Motors.

Analytical modeling of split-phase synchronous reluctance machines (2014)
Presentation / Conference Contribution
Tessarolo, A., Bruzzese, C., Degano, M., & Branz, L. (2014). Analytical modeling of split-phase synchronous reluctance machines. . https://doi.org/10.1109/IECON.2014.7048967

Synchronous reluctance (SynRel) motors with rotor flux barriers are gaining increasing attractiveness in automotive applications thanks to their cheap, rugged and magnet-free rotor construction. When equipped with a split-phase stator winding and sup... Read More about Analytical modeling of split-phase synchronous reluctance machines.

Formula SAE electric competition: Electrical motor design (2013)
Presentation / Conference Contribution
Carraro, E., Degano, M., Morandin, M., & Bianchi, N. (2013). Formula SAE electric competition: Electrical motor design. . https://doi.org/10.1109/IEMDC.2013.6556303

Electric mobility is becoming a growing reality due to increase of the demand and cost of oil and the enviromental impact of conventional internal combustion engines. To follow this trend, national student competitions belonging to Formula SAE (Socie... Read More about Formula SAE electric competition: Electrical motor design.

Permanent magnet volume minimization in permanent magnet assisted synchronous reluctance motors (2013)
Presentation / Conference Contribution
Carraro, E., Degano, M., & Bianchi, N. (2013). Permanent magnet volume minimization in permanent magnet assisted synchronous reluctance motors. . https://doi.org/10.1109/EVER.2013.6521539

In the recent years the study on new motor topologies for automotive applications has found an increasing interest. The environmental impact of conventional internal combustion engine, together with the increasing demand and the cost of the oil, are... Read More about Permanent magnet volume minimization in permanent magnet assisted synchronous reluctance motors.

On the use of dimensioning equations for surface permanent magnet machines (2012)
Presentation / Conference Contribution
Branz, L., Degano, M., De Martin, M., & Tessarolo, A. (2012). On the use of dimensioning equations for surface permanent magnet machines. . https://doi.org/10.1109/SPEEDAM.2012.6264423

Surface permanent magnet (SPM) machines are widely used in a vast variety of industrial, domestic and vehicular applications. In the engineering practice, it is useful to adopt dimensioning equations to quickly predict their size, weight and producti... Read More about On the use of dimensioning equations for surface permanent magnet machines.

Traditional hydropower plant revamping based on a variable-speed surface permanent-magnet high-torque-density generator (2011)
Presentation / Conference Contribution
Tessarolo, A., Luise, F., Raffin, P., & Degano, M. (2011). Traditional hydropower plant revamping based on a variable-speed surface permanent-magnet high-torque-density generator. . https://doi.org/10.1109/ICCEP.2011.6036335

In today's energy-saving and optimization programs, hydroelectric power plays a key role as it is based on a clean renewable energy source and capable of fulfilling a significant portion of the overall power demand. However, many hydropower plants ha... Read More about Traditional hydropower plant revamping based on a variable-speed surface permanent-magnet high-torque-density generator.

HF induction motor modeling using Genetic Algorithms and experimental impedance measurement (2010)
Presentation / Conference Contribution
Degano, M., Zanchetta, P., Clare, J., & Empringham, L. (2010). HF induction motor modeling using Genetic Algorithms and experimental impedance measurement. . https://doi.org/10.1109/ISIE.2010.5637052

High frequency (HF) models of electrical motors and converters are of basic importance for Electro Magnetic Compatibility (EMC) characterization of electrical drives and for EMI filters design. In this paper a method for characterizing and tuning HF... Read More about HF induction motor modeling using Genetic Algorithms and experimental impedance measurement.