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Electromechanical Characteristics Analysis under DSISC Fault in Synchronous Generators (2022)
Journal Article
He, Y.-L., Qiu, M.-H., Yuan, X.-H., He, X.-L., Wang, H.-P., Jiang, M.-Y., Gerada, C., & Wan, S.-T. (2022). Electromechanical Characteristics Analysis under DSISC Fault in Synchronous Generators. Machines, 10(6), Article 432. https://doi.org/10.3390/machines10060432

This paper studies the electromechanical characteristics of synchronous generators under dynamic stator interturn short circuit (DSISC). First, the air gap magnetic flux density (MFD) of the generator under normal and DSISC fault was obtained. Then,... Read More about Electromechanical Characteristics Analysis under DSISC Fault in Synchronous Generators.

A multi-roller static model of the planetary roller screw mechanism considering load sharing (2022)
Journal Article
Fu, X., Li, X., Ma, S., Gerada, D., Liu, G., & Gerada, C. (2022). A multi-roller static model of the planetary roller screw mechanism considering load sharing. Tribology International, 173, Article 107648. https://doi.org/10.1016/j.triboint.2022.107648

A multi-roller static model is proposed to calculate load sharing and load distribution in a planetary roller screw mechanism (PRSM) with axial loads and errors. Taking into the actual positions of rollers, the PRSM is discretized into a multi-roller... Read More about A multi-roller static model of the planetary roller screw mechanism considering load sharing.

High Speed Permanent Magnet Assisted Synchronous Reluctance Machine - Part II: Performance Boundaries (2022)
Journal Article
Di Nardo, M., Gallicchio, G., Palmieri, M., Marfoli, A., Degano, M., Gerada, C., & Cupertino, F. (2022). High Speed Permanent Magnet Assisted Synchronous Reluctance Machine - Part II: Performance Boundaries. IEEE Transactions on Energy Conversion, 37(4), 2567-2577. https://doi.org/10.1109/tec.2022.3176383

The insertion of permanent magnets (PMs) within the rotor slots of Synchronous Reluctance Machines (SyRM) is the most common design strategy used to increase significantly their performance. In this paper it is shown how a permanent magnet assisted s... Read More about High Speed Permanent Magnet Assisted Synchronous Reluctance Machine - Part II: Performance Boundaries.

High Speed Permanent Magnet Assisted Synchronous Reluctance Machines - Part I: A General Design Approach (2022)
Journal Article
Gallicchio, G., Di Nardo, M., Palmieri, M., Marfoli, A., Degano, M., Gerada, C., & Cupertino, F. (2022). High Speed Permanent Magnet Assisted Synchronous Reluctance Machines - Part I: A General Design Approach. IEEE Transactions on Energy Conversion, 37(4), 1-1. https://doi.org/10.1109/tec.2022.3176382

The design of synchronous reluctance machines with and without permanent magnets assistance constitutes a challenging engineering task due to the numerous design variables and performance indexes to be considered. The design complexity increases even... Read More about High Speed Permanent Magnet Assisted Synchronous Reluctance Machines - Part I: A General Design Approach.

Electromagnetic Torque Fluctuating Properties under Dynamic RISC Fault in Turbogenerators (2022)
Journal Article
He, Y., Qiu, M., Yuan, X., Wang, H., Jiang, M., Gerada, C., & Wan, S. (2022). Electromagnetic Torque Fluctuating Properties under Dynamic RISC Fault in Turbogenerators. Energies, 15(10), Article 3821. https://doi.org/10.3390/en15103821

This paper analyzes the electromagnetic torque (EMT) fluctuation characteristics in synchronous generators under rotor interturn short-circuit (DRISC) fault. The novelty of this paper is that the DRISC fault is proposed based on the intermittent inte... Read More about Electromagnetic Torque Fluctuating Properties under Dynamic RISC Fault in Turbogenerators.

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.

Analytical Methodology for Eddy Current Loss Simulation in Armature Windings of Synchronous Electrical Machines With Permanent Magnets (2022)
Journal Article
Golovanov, D., Galassini, A., Transi, T., & Gerada, C. (2022). Analytical Methodology for Eddy Current Loss Simulation in Armature Windings of Synchronous Electrical Machines With Permanent Magnets. IEEE Transactions on Industrial Electronics, 69(10), 9761-9770. https://doi.org/10.1109/tie.2022.3161818

This article describes a novel analytical methodology for eddy current losses simulation in the windings of permanent magnet synchronous machines. The methodology is based on subdomain modeling technique in conjunction with solving of ordinary differ... Read More about Analytical Methodology for Eddy Current Loss Simulation in Armature Windings of Synchronous Electrical Machines With Permanent Magnets.

Mild Hybridization of Turboprop Engine With High-Power-Density Integrated Electric Drives (2022)
Journal Article
Chen, Y., Yang, T., Khowja, M. R., La Rocca, A., Nasir, U., Chowdhury, S., Evans, D., Kember, D., Klonowski, T., Arnaud, Y., Apostin, L., Liger, T., Cossart, G., Vakil, G., Gerada, C., Bozhko, S., Detry, S., Diette, C., & Wheeler, P. (2022). Mild Hybridization of Turboprop Engine With High-Power-Density Integrated Electric Drives. IEEE Transactions on Transportation Electrification, 8(4), 4148-4162. https://doi.org/10.1109/TTE.2022.3160153

This article shares with the aerospace community a case study of turboprop mild hybridization using a recently developed integrated drive system in the University of Nottingham, U.K., within the ACHIEVE project under EU H2020 CleanSky 2 program (proj... Read More about Mild Hybridization of Turboprop Engine With High-Power-Density Integrated Electric Drives.

Mild hybridisation of turboprop engine with high-power-density integrated electric drives (2022)
Journal Article
Cossart, G., Chen, Y., Yang, T., Khowja, M., La Rocca, A., Nasir, U., Chowdhury, S., Evans, D., Kember, D., Klonowski, T., Arnaud, Y., Apostin, L., Liger, T., Cossart, G., Vakil, G., Gerada, C., Bozhko, S., Detry, S., Diette, C., & Wheeler, P. (2022). Mild hybridisation of turboprop engine with high-power-density integrated electric drives. IEEE Transactions on Transportation Electrification, 8(4), 4148-4162. https://doi.org/10.1109/TTE.2022.3160153

This paper shares with the aerospace community a case study of turboprop mild hybridisation using a recently developed integrated drive system in the University of Nottingham, UK, within the ACHIEVE project under EU H2020 CleanSky 2 program (project... Read More about Mild hybridisation of turboprop engine with high-power-density integrated electric drives.

Profiling the Eddy Current Losses Variations of High-Speed Permanent Magnet Machines in Plug-in Hybrid Electric Vehicles (2022)
Journal Article
Huang, Z., Tang, M., Golovanov, D., Yang, T., Herring, S., Zanchetta, P., & Gerada, C. (2022). Profiling the Eddy Current Losses Variations of High-Speed Permanent Magnet Machines in Plug-in Hybrid Electric Vehicles. IEEE Transactions on Transportation Electrification, 8(3), 3451--3463. https://doi.org/10.1109/TTE.2022.3152845

High-speed permanent magnet (PM) machines have been recognized as a popular choice for plug-in hybrid electric vehicles (PHEVs). Although high-speed operation can enhance the machine power density, more rotor eddy current losses can be expected. Thos... Read More about Profiling the Eddy Current Losses Variations of High-Speed Permanent Magnet Machines in Plug-in Hybrid Electric Vehicles.

A Low-Complexity Modulated Model Predictive Torque and Flux Control Strategy for PMSM Drives Without Weighting Factor (2022)
Journal Article
Nasr, A., Gu, C., Buticchi, G., Bozhko, S., & Gerada, C. (2023). A Low-Complexity Modulated Model Predictive Torque and Flux Control Strategy for PMSM Drives Without Weighting Factor. IEEE Journal of Emerging and Selected Topics in Power Electronics, 11(2), 1305-1316. https://doi.org/10.1109/jestpe.2022.3152652

This article proposes a modulated model predictive torque and flux control (M2PTFC) method with low complexity for a two-level voltage source inverter (2L-VSI)-fed permanent magnet synchronous motor (PMSM). The proposed strategy aims to reduce the co... Read More about A Low-Complexity Modulated Model Predictive Torque and Flux Control Strategy for PMSM Drives Without Weighting Factor.

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.

Effect of Multi-Size Magnetic Powder Gradation on Magnetic Properties of Novel Composite Magnetic Materials for HSPMSM (2022)
Journal Article
Yao, J., Zhang, Y., Wang, H., Zhang, F., & Gerada, C. (2022). Effect of Multi-Size Magnetic Powder Gradation on Magnetic Properties of Novel Composite Magnetic Materials for HSPMSM. IEEE Transactions on Transportation Electrification, 8(3), 3594-3605. https://doi.org/10.1109/tte.2022.3149820

The ordinary high-speed permanent magnet synchronous machines (HSPMSMs) have the problems of high rotor temperature rise. In order to solve these problems, a novel composite rotor HSPMSM (NCR-HSPMSM) is proposed in this article. The novel composite r... Read More about Effect of Multi-Size Magnetic Powder Gradation on Magnetic Properties of Novel Composite Magnetic Materials for HSPMSM.

A Comprehensive Design Guideline of Hairpin Windings for High Power Density Electric Vehicle Traction Motors (2022)
Journal Article
Zou, T., Gerada, D., La Rocca, A., Moslemin, M., Cairns, A., Cui, M., Bardalai, A., Zhang, F., & Gerada, C. (2022). A Comprehensive Design Guideline of Hairpin Windings for High Power Density Electric Vehicle Traction Motors. IEEE Transactions on Transportation Electrification, 8(3), 3578-3593. https://doi.org/10.1109/TTE.2022.3149786

The rapidly increasing demand on power density levels of electric vehicle (EV) drive systems is pushing the boundaries of traction motor performance. Hairpin windings are becoming a popular option for EV motors due to their reduced DC losses and impr... Read More about A Comprehensive Design Guideline of Hairpin Windings for High Power Density Electric Vehicle Traction Motors.

Torque Limiters for Aerospace Actuator Application (2022)
Journal Article
Shahjahan Ahmad, S., Tom, L., La Rocca, A., La Rocca, S., Vakil, G., Gerada, C., & Benarous, M. (2022). Torque Limiters for Aerospace Actuator Application. Energies, 15(4), Article 1467. https://doi.org/10.3390/en15041467

Safety and reliability of electrical actuators are essential for success of all electric and more electric aircrafts (MEA). Torque limiters improve the reliability of electromechanical actuators (EMA) by restricting the amount of force experienced by... Read More about Torque Limiters for Aerospace Actuator Application.

Rotor Slot Design of Squirrel Cage Induction Motors with Improved Rated Efficiency and Starting Capability (2022)
Journal Article
Di Nardo, M., Marfoli, A., Degano, M., & Gerada, C. (2022). Rotor Slot Design of Squirrel Cage Induction Motors with Improved Rated Efficiency and Starting Capability. IEEE Transactions on Industry Applications, 58(3), 3383-3393. https://doi.org/10.1109/TIA.2022.3147156

Among the electro-mechanical devices transforming energy from electrical to mechanical, the squirrel cage induction motor can be surely considered a workhorse of the industry due to its robustness, low cost and good performance when directly fed by t... Read More about Rotor Slot Design of Squirrel Cage Induction Motors with Improved Rated Efficiency and Starting Capability.

Performance Entitlement by Using Novel High Strength Electrical Steels and Copper Alloys for High-Speed Laminated Rotor Induction Machines (2022)
Journal Article
Zhang, F., Gerada, D., Xu, Z., He, Y., Zhang, H., Hua, W., & Gerada, C. (2022). Performance Entitlement by Using Novel High Strength Electrical Steels and Copper Alloys for High-Speed Laminated Rotor Induction Machines. Electronics, 11(2), 210. https://doi.org/10.3390/electronics11020210

The laminated rotor Induction Machine (IM), with its simple construction and manufacturing, robustness, ease of control and comparatively lower cost remains by far the most utilized electromechanical energy converter. At very high speeds, traditional... Read More about Performance Entitlement by Using Novel High Strength Electrical Steels and Copper Alloys for High-Speed Laminated Rotor Induction Machines.

A PMSM With Enhanced Anisotropic Rotor Configuration for Sensorless Operations (2021)
Journal Article
Xu, Z., Zhang, T., & Gerada, C. (2021). A PMSM With Enhanced Anisotropic Rotor Configuration for Sensorless Operations. IEEE Transactions on Energy Conversion, 36(4), 2872-2883. https://doi.org/10.1109/tec.2021.3069096

Sensorless control technologies based on rotor saliency may not operate well due to the effect of magnetic saturation. In this work, a rotor backend (RB) is attached to an existing rotor structure of a permanent magnet synchronous motor (PMSM) to enh... Read More about A PMSM With Enhanced Anisotropic Rotor Configuration for Sensorless Operations.

Integrated Damper Cage for THD Improvements of Variable Speed Salient-Pole Synchronous Generators for the More Electric Aircraft (2021)
Journal Article
Wang, Y., Nuzzo, S., Gerada, C., Zhang, H., Zhao, W., & Galea, M. (2022). Integrated Damper Cage for THD Improvements of Variable Speed Salient-Pole Synchronous Generators for the More Electric Aircraft. IEEE Transactions on Transportation Electrification, 8(3), 3618-3629. https://doi.org/10.1109/tte.2021.3139366

Wound field synchronous generators (WFSGs) have been implemented as aircraft main ac power generation for decades. The trend of moving toward more electric aircraft (MEA) made dc and variable-frequency ac buses favorable for the next-generation power... Read More about Integrated Damper Cage for THD Improvements of Variable Speed Salient-Pole Synchronous Generators for the More Electric Aircraft.

Review on the Traditional and Integrated Passives: State-of-the-Art Design and Technologies (2021)
Journal Article
Khowja, M. R., Abebe, R., Vakil, G., Walker, A., Patel, C., Gerada, C., Bobba, P. B., & Cascella, G. L. (2021). Review on the Traditional and Integrated Passives: State-of-the-Art Design and Technologies. Energies, 15(1), Article 88. https://doi.org/10.3390/en15010088

With the increased necessity of a high power density and efficient system in aerospace and marine industries, integrated motor drives provide an excellent solution in the modern era. Therefore, a close structural and functional integration of passive... Read More about Review on the Traditional and Integrated Passives: State-of-the-Art Design and Technologies.