Design optimization of spoke-type PM motors for Formula e racing cars

Alireza Fatemi; Dan M. Ionel; Mircea Popescu; Nabeel A.O. Demerdash

doi:10.1109/ECCE.2016.7855032

Design optimization of spoke-type PM motors for Formula e racing cars

Alireza Fatemi, Dan M. Ionel, Mircea Popescu, Nabeel A.O. Demerdash

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

10 Scopus citations

Abstract

This paper presents the performance trade-offs in the design optimization of spoke-type permanent magnet (PM) motors for high speed and very high torque density traction motors. An example 18-slot 16-pole machine for a direct drive Formula E race car over the Le Mans driving cycle is considered. Both low speed and extended speed/field-weakening operations are evaluated using high fidelity finite element (FE) simulations, to simultaneously increase the torque density and decrease the power losses over the high energy-throughput-zones of the machine torque-speed plane. The results of the design optimization process yielding 3,400 design candidates are utilized to quantify the performance trade-offs for increasing the power density in spoke-type PM motors. These trade-offs include the impacts on other performance metrics such as power losses, PM demagnetization, and torque ripple. The analysis is supplemented by multi-physics simulation of three counterpart optimized designs, and successful experimental verification of a prototype of one of those three designs which represents a record high power density motor in traction applications.

Original language	English
Title of host publication	ECCE 2016 - IEEE Energy Conversion Congress and Exposition, Proceedings
ISBN (Electronic)	9781509007370
DOIs	https://doi.org/10.1109/ECCE.2016.7855032
State	Published - 2016
Event	2016 IEEE Energy Conversion Congress and Exposition, ECCE 2016 - Milwaukee, United States Duration: Sep 18 2016 → Sep 22 2016

Publication series

Name	ECCE 2016 - IEEE Energy Conversion Congress and Exposition, Proceedings

Conference

Conference	2016 IEEE Energy Conversion Congress and Exposition, ECCE 2016
Country/Territory	United States
City	Milwaukee
Period	9/18/16 → 9/22/16

Bibliographical note

Publisher Copyright:
© 2016 IEEE.

Keywords

Design optimization
design trade-offs
electric vehicles
high power density
multi-physics analysis
spoke-type PM motors
traction motors

ASJC Scopus subject areas

Control and Systems Engineering
Electrical and Electronic Engineering
Energy Engineering and Power Technology
Control and Optimization

Access to Document

10.1109/ECCE.2016.7855032

Cite this

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title = "Design optimization of spoke-type PM motors for Formula e racing cars",

abstract = "This paper presents the performance trade-offs in the design optimization of spoke-type permanent magnet (PM) motors for high speed and very high torque density traction motors. An example 18-slot 16-pole machine for a direct drive Formula E race car over the Le Mans driving cycle is considered. Both low speed and extended speed/field-weakening operations are evaluated using high fidelity finite element (FE) simulations, to simultaneously increase the torque density and decrease the power losses over the high energy-throughput-zones of the machine torque-speed plane. The results of the design optimization process yielding 3,400 design candidates are utilized to quantify the performance trade-offs for increasing the power density in spoke-type PM motors. These trade-offs include the impacts on other performance metrics such as power losses, PM demagnetization, and torque ripple. The analysis is supplemented by multi-physics simulation of three counterpart optimized designs, and successful experimental verification of a prototype of one of those three designs which represents a record high power density motor in traction applications.",

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doi = "10.1109/ECCE.2016.7855032",

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Fatemi, A, Ionel, DM, Popescu, M & Demerdash, NAO 2016, Design optimization of spoke-type PM motors for Formula e racing cars. in ECCE 2016 - IEEE Energy Conversion Congress and Exposition, Proceedings., 7855032, ECCE 2016 - IEEE Energy Conversion Congress and Exposition, Proceedings, 2016 IEEE Energy Conversion Congress and Exposition, ECCE 2016, Milwaukee, United States, 9/18/16. https://doi.org/10.1109/ECCE.2016.7855032

Design optimization of spoke-type PM motors for Formula e racing cars. / Fatemi, Alireza; Ionel, Dan M.; Popescu, Mircea et al.
ECCE 2016 - IEEE Energy Conversion Congress and Exposition, Proceedings. 2016. 7855032 (ECCE 2016 - IEEE Energy Conversion Congress and Exposition, Proceedings).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

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Design optimization of spoke-type PM motors for Formula e racing cars

Abstract

Publication series

Conference

Bibliographical note

Keywords

ASJC Scopus subject areas

Access to Document

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