Professor CHRISTOPHER GERADA's Outputs (460)

A Taguchi-LHS-RSM Double-Staged Approach for Design Optimization of Self-Ventilated Cooling Systems Utilized in PMSMs (2023)
Presentation / Conference Contribution
Zhu, G., Xu, Z., Zhang, F., Gerada, C., & Gerada, D. (2023, November). A Taguchi-LHS-RSM Double-Staged Approach for Design Optimization of Self-Ventilated Cooling Systems Utilized in PMSMs. Presented at 26th International Conference on Electrical Machines and Systems (ICEMS), Zhuhai, China

Thermal management is critical for high-power-density permanent magnet synchronous machines (PMSMs). To realize the efficient and effective design optimization of self-ventilated air cooling systems for PMSMs, in this paper, a Taguchi-preconditioned... Read More about A Taguchi-LHS-RSM Double-Staged Approach for Design Optimization of Self-Ventilated Cooling Systems Utilized in PMSMs.

Comparative Study on Stranded and Hairpin Windings for 350kW EV Traction Motor (2023)
Presentation / Conference Contribution
Jiang, J., Zou, T., Rocca, S. L., Gerada, D., & Gerada, C. (2023, November). Comparative Study on Stranded and Hairpin Windings for 350kW EV Traction Motor. Presented at 2023 26th International Conference on Electrical Machines and Systems (ICEMS), Zhuhai, China

Hairpin winding is a key technology for traction motors to meet the step-change requirements on power density and efficiency in electrical vehicle (EV) industry. This winding solution features inherently high slot fill factor and improved heat dissip... Read More about Comparative Study on Stranded and Hairpin Windings for 350kW EV Traction Motor.

Multi-objective Optimizations of Copper and Aluminum Hairpin Windings: a Comparison (2023)
Presentation / Conference Contribution
Cutuli, G., Nuzzo, S., Zou, T., Franceschini, G., Gerada, C., & Barater, D. (2023, October). Multi-objective Optimizations of Copper and Aluminum Hairpin Windings: a Comparison. Presented at 2023 IEEE Energy Conversion Congress and Exposition (ECCE), Nashville, TN, USA

This work critically analyzes the possibility of adopting aluminum hairpin windings as alternative to copper in electric traction machines for automotive applications. Copper and aluminum hairpin winding solutions are compared based on two proposed s... Read More about Multi-objective Optimizations of Copper and Aluminum Hairpin Windings: a Comparison.

Fault-Tolerant Control for Single-phase Open-circuit and Short-circuit Fault in Five-phase PMSM with Third-order Harmonic Back EMF Using Coefficients Reconfiguration (2023)
Journal Article
Wang, H., Gu, C., Zhao, W., Wang, S., Zhang, X., Buticchi, G., Gerada, C., & Zhang, H. (2024). Fault-Tolerant Control for Single-phase Open-circuit and Short-circuit Fault in Five-phase PMSM with Third-order Harmonic Back EMF Using Coefficients Reconfiguration. IEEE Transactions on Energy Conversion, 39(1), 782 - 792. https://doi.org/10.1109/tec.2023.3327507

For a five-phase permanent magnet synchronous machine (PMSM), the third-order harmonic back EMF is increased by changing the shape of the permanent magnet for increasing average torque in healthy operation. Additionally, in the open-circuit (OC) and... Read More about Fault-Tolerant Control for Single-phase Open-circuit and Short-circuit Fault in Five-phase PMSM with Third-order Harmonic Back EMF Using Coefficients Reconfiguration.

Design of Hairpin Winding and Random Winding Stators for High Speed Heavy-Duty Traction Motor (2023)
Presentation / Conference Contribution
Jiang, J., Zou, T., La Rocca, A., La Rocca, S., Liu, C., Xu, Z., Gerada, C., Zhu, S., Paciura, K., & Gerada, D. (2023, October). Design of Hairpin Winding and Random Winding Stators for High Speed Heavy-Duty Traction Motor. Presented at 2023 IEEE Vehicle Power and Propulsion Conference (VPPC), Milan, Italy

Hairpin winding with rectangularly shaped conductors are gradually replacing random winding wound with stranded wires in electric vehicle (EV) industry. As the newgeneration winding technology, hairpin winding features high electromagnetic and therma... Read More about Design of Hairpin Winding and Random Winding Stators for High Speed Heavy-Duty Traction Motor.

Experimental analysis of mismatch in electro-thermal device parameter within parallel connected SiC MOSFETs: Considerations for multi-chip power module design (2023)
Presentation / Conference Contribution
Fayyaz, A., Li, Y., Evans, P., Watson, A., Wheeler, P., & Gerada, C. (2023, August). Experimental analysis of mismatch in electro-thermal device parameter within parallel connected SiC MOSFETs: Considerations for multi-chip power module design. Presented at WiPDA Asia 2023 - IEEE Workshop on Wide Bandgap Power Devices and Applications in Asia, Hsinchu, Taiwan

This paper aims to investigate the current imbalance within parallel connected common-source configuration of SiC Power MOSFET switches using double pulse transient operation. Mismatches in electro-thermal parameters e.g., threshold voltage (Vth and... Read More about Experimental analysis of mismatch in electro-thermal device parameter within parallel connected SiC MOSFETs: Considerations for multi-chip power module design.

Performance Prediction of Direct Torque-Controlled PMSM Drives Considering Different Pulse Selectors Using FEA-Based Model (2023)
Journal Article
Nasr, A., Gu, C., Li, J., Buticchi, G., Ijaz, S., Gerada, C., & Zhang, H. (2023). Performance Prediction of Direct Torque-Controlled PMSM Drives Considering Different Pulse Selectors Using FEA-Based Model. IEEE Open Journal of Power Electronics, 4, 687-702. https://doi.org/10.1109/ojpel.2023.3311951

Despite the robustness and fast dynamic response, direct torque control (DTC) exhibits relatively large ripples in torque and flux during steady-state operation. Mitigating these ripples depends on designing a pulse selector to identify the optimal v... Read More about Performance Prediction of Direct Torque-Controlled PMSM Drives Considering Different Pulse Selectors Using FEA-Based Model.

Design Methodologies of High Speed Surface Permanent Magnet Synchronous Machines (2023)
Presentation / Conference Contribution
Gallicchio, G., Cupertino, F., Di Nardo, M., Reza Ilkhani, M., & Gerada, C. (2023, May). Design Methodologies of High Speed Surface Permanent Magnet Synchronous Machines. Presented at 2023 IEEE International Electric Machines and Drives Conference, IEMDC 2023, San Francisco, USA

This paper investigates the challenges of designing high speed surface permanent magnet synchronous motors. In particular, the material selection of the permanent magnet retaining system is addressed considering all its multi-physics implication. Fir... Read More about Design Methodologies of High Speed Surface Permanent Magnet Synchronous Machines.

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.

Open-Circuit Fault-Tolerant Control for Nonsinusoidal Back EMF Five-Phase PMSM With Copper Loss Reduction (2023)
Journal Article
Wang, H., Gu, C., Zhao, W., Wang, S., Zhao, H., Buticchi, G., Gerada, C., & Zhang, H. (2024). Open-Circuit Fault-Tolerant Control for Nonsinusoidal Back EMF Five-Phase PMSM With Copper Loss Reduction. IEEE Transactions on Industrial Electronics, 71(7), 6524-6533. https://doi.org/10.1109/TIE.2023.3299025

Due to the different design optimization, five-phase electrical machines can have a nonnegligible distortion in their back electromotive force (EMF) waveform. Most fault-tolerant control methods for this machine used extra fundamental and third-order... Read More about Open-Circuit Fault-Tolerant Control for Nonsinusoidal Back EMF Five-Phase PMSM With Copper Loss Reduction.

A Concentrated-Flux-Type PM Machine With Irregular Magnets and Iron Poles (2023)
Journal Article
Xiang, P., Yan, L., Guo, Y., He, X., Gerada, C., & Chen, I.-M. (2024). A Concentrated-Flux-Type PM Machine With Irregular Magnets and Iron Poles. IEEE/ASME Transactions on Mechatronics, 29(1), 691-702. https://doi.org/10.1109/TMECH.2023.3293505

Most industrial applications concern output torque, rotor mass, and utilization of rare Earth permanent-magnet (PM) material of electrical machines. Generally, it is challenging to improve these aspects simultaneously. The objective of this article i... Read More about A Concentrated-Flux-Type PM Machine With Irregular Magnets and Iron Poles.

Generalized High-Frequency Injection Framework for Sensorless Control of Synchronous Reluctance Machines (2023)
Journal Article
Prystupa, D., Huang, X., Zhang, H., Varvolik, V., Buticchi, G., Wang, S., Zhang, X., Li, J., & Gerada, C. (2023). Generalized High-Frequency Injection Framework for Sensorless Control of Synchronous Reluctance Machines. IEEE Open Journal of the Industrial Electronics Society, 4, 304 - 315. https://doi.org/10.1109/ojies.2023.3298032

The high-frequency injection (HFI) method is commonly used for sensorless control of synchronous reluctance motors (SynRMs) at low speeds. Injecting a high-frequency (HF) signal in a predefined direction, referred to as the d-axis, and further demodu... Read More about Generalized High-Frequency Injection Framework for Sensorless Control of Synchronous Reluctance Machines.

Online Full Range Copper Loss Minimization for Single-phase Short-circuit Fault Tolerant Control in Five-phase PMSM (2023)
Journal Article
Wang, H., Gu, C., Zhao, W., Wang, S., Zhang, X., Buticchi, G., Gerada, C., & Zhang, H. (2024). Online Full Range Copper Loss Minimization for Single-phase Short-circuit Fault Tolerant Control in Five-phase PMSM. IEEE Transactions on Transportation Electrification, 10(2), 2777 - 2788. https://doi.org/10.1109/tte.2023.3296755

Five-phase machines are increasingly adopted in high-reliability applications because of their fault-tolerant characteristics. In this framework, single-phase short-circuits (SCs) fault tolerant control has drawn increasing interest. One issue with f... Read More about Online Full Range Copper Loss Minimization for Single-phase Short-circuit Fault Tolerant Control in Five-phase PMSM.

Parameter Estimation of Isotropic PMSMs Based on Multiple Steady-State Measurements Collected During Regular Operations (2023)
Journal Article
Brescia, E., Massenio, P. R., Nardo, M. D., Cascella, G. L., Gerada, C., & Cupertino, F. (2024). Parameter Estimation of Isotropic PMSMs Based on Multiple Steady-State Measurements Collected During Regular Operations. IEEE Transactions on Energy Conversion, 39(1), 130 - 145. https://doi.org/10.1109/tec.2023.3295844

This article proposes a novel method to estimate the parameters of isotropic PMSMs which uses only steady-state measurements of load conditions commonly available during the regular operations of off-the-shelf industrial drives. Differently from exis... Read More about Parameter Estimation of Isotropic PMSMs Based on Multiple Steady-State Measurements Collected During Regular Operations.

Preliminary Sensitivity Analysis and Optimisation of a Wound Field Synchronous Motor for Traction Applications (2023)
Presentation / Conference Contribution
Petrelli, G., Nuzzo, S., Barater, D., Zou, T., Franceschini, G., & Gerada, C. (2023, July). Preliminary Sensitivity Analysis and Optimisation of a Wound Field Synchronous Motor for Traction Applications. Presented at AEIT AUTOMOTIVE 2023 Conference, Modena, Italy

The automotive field is switching to electric propulsion to guarantee a more efficient and sustainable transportation. Several motor configurations can be adopted for this purpose. Permanent magnet-based motors are usually preferred, but they are the... Read More about Preliminary Sensitivity Analysis and Optimisation of a Wound Field Synchronous Motor for Traction Applications.

Nonintrusive Parameter Identification of IoT-Embedded Isotropic PMSM Drives (2023)
Journal Article
Brescia, E., Massenio, P. R., Di Nardo, M., Cascella, G. L., Gerada, C., & Cupertino, F. (2023). Nonintrusive Parameter Identification of IoT-Embedded Isotropic PMSM Drives. IEEE Journal of Emerging and Selected Topics in Power Electronics, 11(5), 5195-5207. https://doi.org/10.1109/JESTPE.2023.3292526

This article proposes a nonintrusive parameter identification procedure suitable for Internet-of-Things (IoT)-embedded isotropic permanent magnet synchronous machines (PMSMs). The method is designed for scenarios where only measurements collected wit... Read More about Nonintrusive Parameter Identification of IoT-Embedded Isotropic PMSM Drives.

Model adaptive collision detection for flexible joint manipulator based on state observer (2023)
Journal Article
Shipeng, C., Yiwei, L., Yongjun, S., & Gerada, C. (2023). Model adaptive collision detection for flexible joint manipulator based on state observer. International Journal of Hydromechatronics, 6(3), 242-257. https://doi.org/10.1504/IJHM.2023.132298

In this paper, a novel collision detection method for flexible joint manipulator, which calculates the difference between theoretical control torque of regression model and measured control torque, is proposed. As the core of the collision detection... Read More about Model adaptive collision detection for flexible joint manipulator based on state observer.

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., Spadi, T., Gaertner, M., Brecher, C., & Hoppert, M. (2023, May). Rotor Vibration Control using Multi-Three-Phase Permanent Magnet Synchronous Machines. Presented at 2023 IEEE International Electric Machines & Drives Conference (IEMDC), San Francisco, USA

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.

Optimal Design of Bearingless Multi-Three Phases Permanent Magnet Synchronous Machines (2023)
Presentation / Conference Contribution
Di Nardo, M., Ilkhani, M. R., Wang, M., Degano, M., Gerada, C., Gallicchio, G., Cupertino, F., Gartner, M., Brecher, C., & Hoppert, M. (2023, May). Optimal Design of Bearingless Multi-Three Phases Permanent Magnet Synchronous Machines. Presented at 2023 IEEE International Electric Machines & Drives Conference (IEMDC), San Francisco, CA, USA

This paper addresses the design of a multi-three phases sectorial permanent magnet synchronous machine for bearingless applications. After a brief description of the mathematical model of this machine topology along with some preliminary design consi... Read More about Optimal Design of Bearingless Multi-Three Phases Permanent Magnet Synchronous Machines.