All Outputs (52)

Effect of 3D Unidirectional and Hybrid SAGE on Electromagnetic Torque Fluctuation Characteristics in Synchronous Generator (2019)
Journal Article
He, Y., Xu, M., Xiong, J., Sun, Y., Wang, X., Gerada, D., & Vakil, G. (2019). Effect of 3D Unidirectional and Hybrid SAGE on Electromagnetic Torque Fluctuation Characteristics in Synchronous Generator. IEEE Access, 7, 100813-100823. https://doi.org/10.1109/access.2019.2929868

This paper presents a comprehensive study on the variation laws of electromagnetic torque (EMT) under static air-gap eccentricity (SAGE) conditions in synchronous generators. Different from other studies, this paper focuses on not only the impact of... Read More about Effect of 3D Unidirectional and Hybrid SAGE on Electromagnetic Torque Fluctuation Characteristics in Synchronous Generator.

Comparative study on two modular spoke-type PM machines for in-wheel traction applications (2019)
Journal Article
Zhang, H., Hua, W., Gerada, D., Gerada, C., Li, Y., & Zhang, G. (2019). Comparative study on two modular spoke-type PM machines for in-wheel traction applications. IEEE Transactions on Energy Conversion, 34(4), 2137-2147. https://doi.org/10.1109/tec.2019.2927872

This paper focuses on the comparative analysis of modular spoke-type permanent magnet machines with two magnetization modes, which are referred to as M-I and M-II types. The analytical models of the proposed machines are built based on the simple mag... Read More about Comparative study on two modular spoke-type PM machines for in-wheel traction applications.

Optimized Sizing of IPM Machines for Automotive Traction Application (2019)
Conference Proceeding
Valente, G., Gerada, D., Degano, M., Gerada, C., Foulsham, J., & Beeby, D. (2019). Optimized Sizing of IPM Machines for Automotive Traction Application. In 2019 IEEE International Electric Machines & Drives Conference (IEMDC) (970-975). https://doi.org/10.1109/IEMDC.2019.8785245

This paper presents the implementation of an electrical machine design tool including its overall architecture. The tool is flexible and can be employed for the sizing of any permanent magnet synchronous machine. The case study considered in this wor... Read More about Optimized Sizing of IPM Machines for Automotive Traction Application.

Dual-Rotor Permanent Magnet Motor for Electric Superbike (2019)
Conference Proceeding
Golovanov, D., Galassini, A., Flanagan, L., Gerada, D., Xu, Z., & Gerada, C. (2019). Dual-Rotor Permanent Magnet Motor for Electric Superbike. In 2019 IEEE International Electric Machines & Drives Conference (IEMDC) (951-956). https://doi.org/10.1109/IEMDC.2019.8785287

The demand on high-performance electrical machines has significantly increased for aerospace and transportation industries in recent years. A racing electric motorbike is a suitable platform to validate and prove new concepts and machine topologies b... Read More about Dual-Rotor Permanent Magnet Motor for Electric Superbike.

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.

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.

The Influence of Stator Material on the Power Density and Iron Loss of a High-Performace Starter-Generator for More Electric Aircraft (2018)
Conference Proceeding
Golovanov, D., Xu, Z., Gerada, D., Degano, M., Vakil, G., & Gerada, C. (2018). The Influence of Stator Material on the Power Density and Iron Loss of a High-Performace Starter-Generator for More Electric Aircraft. In 2018 21st International Conference on Electrical Machines and Systems (ICEMS) (169-173). https://doi.org/10.23919/ICEMS.2018.8549390

Maximizing the power density as well as efficiency are two of the main critical aspects for engineers who are designing electrical machines for aerospace applications. Iron losses have a significant impact on the total machine efficiency, thermal sta... Read More about The Influence of Stator Material on the Power Density and Iron Loss of a High-Performace Starter-Generator for More Electric Aircraft.

A semi-flooded cooling for a high speed machine: Concept, design and practice of an oil sleeve (2017)
Conference Proceeding
Xu, Z., La Rocca, A., Arumugam, P., Pickering, S. J., Gerada, C., Bozhko, S., …Zhang, H. (2017). A semi-flooded cooling for a high speed machine: Concept, design and practice of an oil sleeve. In Proceedings IECON 2017 - 43rd Annual Conference of the IEEE Industrial Electronics Society (8557-8562). https://doi.org/10.1109/IECON.2017.8217503

This paper proposes a semi-flooded cooling concept for a high speed machine design. The electrical machine considered is for an aircraft starter-generator system where power density and efficiency are crucial. In order to achieve the high power densi... Read More about A semi-flooded cooling for a high speed machine: Concept, design and practice of an oil sleeve.

Improved damper cage design for salient-pole synchronous generators (2016)
Journal Article
Nuzzo, S., Degano, M., Galea, M., Gerada, C., Gerada, D., & Brown, N. (2017). Improved damper cage design for salient-pole synchronous generators. IEEE Transactions on Industrial Electronics, 64(3), 1958-1970. https://doi.org/10.1109/TIE.2016.2619321

© 2016 IEEE. The benefits of implementing a damper winding in salient-pole synchronous generators are widely known and well consolidated. It is also well known that such a winding incurs extra losses in the machine due to a number of reasons. In orde... Read More about Improved damper cage design for salient-pole synchronous generators.

Damper cage loss reduction and no-load voltage THD improvements in salient-pole synchronous generators (2016)
Conference Proceeding
Nuzzo, S., Galea, M., Gerada, C., Gerada, D., Mebarki, A., & Brown, N. (2016). Damper cage loss reduction and no-load voltage THD improvements in salient-pole synchronous generators.

Salient-pole synchronous generators (SG) have a long history of utilization as reliable power generation systems. Important aspects of such generators include a high power-to-weight ratio, high efficiency and a low cost per kVA output [1]. Another cr... Read More about Damper cage loss reduction and no-load voltage THD improvements in salient-pole synchronous generators.