All Outputs (58)

A Nonlinear Extended State Observer for Rotor Position and Speed Estimation for Sensorless IPMSM Drives (2019)
Journal Article
Xu, Z. J., Zhang, T., Bao, Y., Zhang, H., & Gerada, C. (2020). A Nonlinear Extended State Observer for Rotor Position and Speed Estimation for Sensorless IPMSM Drives. IEEE Transactions on Power Electronics, 35(1), 733-743. https://doi.org/10.1109/tpel.2019.2914119

© 1986-2012 IEEE. Sensorless machine drives in vehicle traction frequently experience rapidly-changing load disturbance and demand fast speed dynamics. Without gain-scheduling or compensation, conventional quadrature phase-locked-loop (Q-PLL) is unab... Read More about A Nonlinear Extended State Observer for Rotor Position and Speed Estimation for Sensorless IPMSM Drives.

Active Thermal Control for Power Converters in Modular Winding Permanent Magnet Synchronous Motor (2019)
Conference Proceeding
Yan, H., Buticchi, G., Yang, J., Zhao, W., Zhang, H., & Gerada, C. (2019). Active Thermal Control for Power Converters in Modular Winding Permanent Magnet Synchronous Motor. In Proceedings - 2019 IEEE 13th International Conference on Compatibility, Power Electronics and Power Engineering (CPE-POWERENG) (1-6). https://doi.org/10.1109/CPE.2019.8862416

To increase the reliability and reduce the torque ripple, modular winding structure has been employed in the Permanent Magnet Synchronous Motors (PMSMs). However, the reliability of the motor system depends on the lifetime of the power semiconductor... Read More about Active Thermal Control for Power Converters in Modular Winding Permanent Magnet Synchronous Motor.

Reduced Order Lumped Parameter Thermal Network for Dual Three-Phase Permanent Magnet Machines (2019)
Conference Proceeding
Giangrande, P., Madonna, V., Nuzzo, S., Spagnolo, C., Gerada, C., & Galea, M. (2019). Reduced Order Lumped Parameter Thermal Network for Dual Three-Phase Permanent Magnet Machines. In Proceedings 2019 IEEE Workshop on Electrical Machines Design, Control and Diagnosis (WEMDCD) (71-76). https://doi.org/10.1109/WEMDCD.2019.8887772

© 2019 IEEE. In recent years, electrical machines are employed in an ever-increasing number of safety-critical applications, which require high power density, along with a demanding level of reliability and/or fault-tolerance capability. Multi-phase... Read More about Reduced Order Lumped Parameter Thermal Network for Dual Three-Phase Permanent Magnet Machines.

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.

Coupling calculation and analysis of three-dimensional temperature and fluid field for high-power high-speed permanent magnet machine (2019)
Journal Article
Wang, T., Zhang, Y., Wen, F., Gerada, C., Liu, G., Rui, D., & Zerun, W. (2019). Coupling calculation and analysis of three-dimensional temperature and fluid field for high-power high-speed permanent magnet machine. IET Electric Power Applications, 13(6), 812-818. https://doi.org/10.1049/iet-epa.2018.5725

© The Institution of Engineering and Technology 2019. In order to accurately estimate the temperature rise for high-power high-speed permanent magnet machines (HSPMMs), a novel temperature calculation method considering the non-linear variation of ma... Read More about Coupling calculation and analysis of three-dimensional temperature and fluid field for high-power high-speed permanent magnet machine.

An accurate wide-speed range control method of IPMSM considering resistive voltage drop and magnetic saturation (2019)
Journal Article
Gerada, C., Galassini, A., Degano, M., Kang, J., & Wang, S. (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)
Conference Proceeding
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.

Flux-Density Harmonics Analysis of Switched-Flux Permanent Magnet Machines (2019)
Journal Article
Zeng, Z., Shen, Y., Lu, Q., Gerada, D., Wu, B., Huang, X., & Gerada, C. (2019). Flux-Density Harmonics Analysis of Switched-Flux Permanent Magnet Machines. IEEE Transactions on Magnetics, 55(6), 1-7. https://doi.org/10.1109/tmag.2019.2908250

By developing a simple permeance-magnetomotive force (MMF) model of switched-flux permanent magnet (SFPM) machines, the air-gap flux density produced by both PMs and armature current can be derived, in which harmonics with the same order and rotation... Read More about Flux-Density Harmonics Analysis of Switched-Flux Permanent Magnet Machines.

Eddy Current Loss Control in High Speed PM Starter-Generator (2019)
Conference Proceeding
Zhang, X., Zhang, H., Gerada, C., Gerada, D., Li, J., Xu, Z., & Liu, C. (2019). Eddy Current Loss Control in High Speed PM Starter-Generator. In Proceedings: 2019 IEEE Workshop on Electrical Machines Design, Control and Diagnosis (WEMDCD) (46-50). https://doi.org/10.1109/WEMDCD.2019.8887771

This paper highlights the advancement in high speed generation applications along with describing the state of the art in the machine design technologies enabling such an application uptake. Via the investigating on a 250kW high speed PM starter-gene... Read More about Eddy Current Loss Control in High Speed PM Starter-Generator.

Effective Thermal Conductivity Calculation and Measurement of Litz Wire based on the Porous Metal Materials Structure (2019)
Journal Article
Liu, X., Gerada, D., Xu, Z., Corfield, M., Gerada, C., & Yu, H. (2020). Effective Thermal Conductivity Calculation and Measurement of Litz Wire based on the Porous Metal Materials Structure. IEEE Transactions on Industrial Electronics, 67(4), 2667-2677. https://doi.org/10.1109/tie.2019.2910031

Litz wires are employed in high-frequency electrical machines due to their advantages of reducing the ac losses, including minimizing the skin effect and the proximity effect. In order to improve the reliability of such machines, and enable accurate... Read More about Effective Thermal Conductivity Calculation and Measurement of Litz Wire based on the Porous Metal Materials Structure.

Numerical investigations of convective phenomena of oil impingement on end-windings (2019)
Journal Article
Connor, P. H., La Rocca, A., Xu, Z., Eastwick, C. N., Pickering, S. J., & Gerada, C. (2019). Numerical investigations of convective phenomena of oil impingement on end-windings. Journal of Engineering, 2019(17), 4022-4026. https://doi.org/10.1049/joe.2018.8027

A novel experimental rig for analysing intensive liquid cooling of highly power-dense electrical machine components has been developed. Coupled fluid flow and heat transfer have been modelled, using computational fluid dynamics (CFD), to inform the d... Read More about Numerical investigations of convective phenomena of oil impingement on end-windings.

Novel Motor-Shaped Rotational Inductor for Motor Drive Applications (2019)
Journal Article
Odhano, S., Khowja, M. R., Gerada, C., Vakil, G., Abebe, R., Odhano, S. A., …Wheeler, P. (2020). Novel Motor-Shaped Rotational Inductor for Motor Drive Applications. IEEE Transactions on Industrial Electronics, 67(3), 1844-1854. https://doi.org/10.1109/tie.2019.2907512

This paper presents a validation of the novel motor-shaped rotational inductor. To validate the concept, 12 slots 2 poles rotational inductor is tested at different supply frequencies and rotor speeds. Experimental results have shown that the iron lo... Read More about Novel Motor-Shaped Rotational Inductor for Motor Drive Applications.

Considerations on the Development of an Electric Drive for a Secondary Flight Control Electromechanical Actuator (2019)
Journal Article
Giangrande, P., Galassini, A., Papadopoulos, S., Al-Timimy, A., Calzo, G. L., Degano, M., …Galea, M. (2019). Considerations on the Development of an Electric Drive for a Secondary Flight Control Electromechanical Actuator. IEEE Transactions on Industry Applications, 55(4), 3544-3554. https://doi.org/10.1109/tia.2019.2907231

The more electric aircraft concept aims to improve the fuel consumption, the weight, and both the maintenance and operating costs of the aircraft, by promoting the use of electric power in actuation systems. According to this scenario, electromechani... Read More about Considerations on the Development of an Electric Drive for a Secondary Flight Control Electromechanical Actuator.

Fixed switching frequency predictive control of an asymmetric source dual inverter system with a floating bridge for multilevel operation (2019)
Journal Article
Chowdhury, S., Wheeler, P., Huang, Z., Rivera, M., & Gerada, C. (2019). Fixed switching frequency predictive control of an asymmetric source dual inverter system with a floating bridge for multilevel operation. IET Power Electronics, 12(3), 450-457. https://doi.org/10.1049/iet-pel.2018.5395

This study proposes a modified modulated model predictive control (MMPC) scheme to control an open-end winding induction motor drive using an asymmetric source dual inverter with one floating bridge. The control algorithm uses a modulation algorithm... Read More about Fixed switching frequency predictive control of an asymmetric source dual inverter system with a floating bridge for multilevel operation.

High Torque Density Torque Motor With Hybrid Magnetization Pole Arrays for Jet Pipe Servo Valve (2019)
Journal Article
Zhang, Q., Yan, L., Duan, Z., Jiao, Z., Gerada, C., & Chen, I. (2020). High Torque Density Torque Motor With Hybrid Magnetization Pole Arrays for Jet Pipe Servo Valve. IEEE Transactions on Industrial Electronics, 67(3), 2133-2142. https://doi.org/10.1109/tie.2019.2903761

Torque motor is one key component that directly influences the dynamic performance of jet pipe servo valve in aircraft. In this paper, a novel torque motor with hybrid-magnetization pole arrays is proposed. By changing the magnetization patterns of p... Read More about High Torque Density Torque Motor With Hybrid Magnetization Pole Arrays for Jet Pipe Servo Valve.

Back-Iron Extension Thermal Benefits for Electrical Machines With Concentrated Windings (2019)
Journal Article
Zhang, F., Gerada, D., Xu, Z., Zhang, X., Tighe, C., Zhang, H., & Gerada, C. (2020). Back-Iron Extension Thermal Benefits for Electrical Machines With Concentrated Windings. IEEE Transactions on Industrial Electronics, 67(3), 1728-1738. https://doi.org/10.1109/tie.2019.2903758

Fluid flow and heat transfer analysis of TEFC machine end regions using more realistic end-winding geometry (2019)
Journal Article
La Rocca, S., Pickering, S. J., Eastwick, C. N., Gerada, C., & Rönnberg, K. (2019). Fluid flow and heat transfer analysis of TEFC machine end regions using more realistic end-winding geometry. Journal of Engineering, 2019(17), 3831-3835. https://doi.org/10.1049/joe.2018.8026

Here, a typical small low-voltage totally enclosed fan-cooled (TEFC) motor (output power ∼10 kW) has been studied using computational fluid dynamics. The complexity of the end-winding geometries, often consisting of several insulated copper strands b... Read More about Fluid flow and heat transfer analysis of TEFC machine end regions using more realistic end-winding geometry.

The Influence of Winding Location in Flux-Switching Permanent-Magnet Machines (2019)
Journal Article
Zhang, H., Hua, W., Hu, M., Gerada, D., & Gerada, C. (2019). The Influence of Winding Location in Flux-Switching Permanent-Magnet Machines. IEEE Transactions on Magnetics, 55(7), Article 8104205. https://doi.org/10.1109/tmag.2018.2886686

The main purpose of this paper is to investigate the influence of winding location on back electromotive force (EMF) and armature inductance in flux-switching permanent-magnet (FSPM) machines. To obtain an analytical solution, a double-stator-pitch m... Read More about The Influence of Winding Location in Flux-Switching Permanent-Magnet Machines.