Switched reluctance motor design for electric vehicles based on harmonics and back EMF analysis

Abid Ali Shah Bukhari, Belema Prince Alalibo, Wenping Cao, Zhengyu Lin, Shahid Hussain Shaikh, Toufique Ahmed Soomro, Shahzeb Ansari, Fayyaz Ali Jandan

Research output: Contribution to journalArticlepeer-review


Permanent magnet synchronous motors are widely accepted in automotive applications. The high torque density,
high rotational speed with maximum efficiency in electric vehicle applications is technically challenging for motor design.
However, these machines are expensive and difficult to work at high-temperature harsh environment due to permanent magnets
demagnetisation features. Alternatively, switched reluctance motors can provide similar output characteristics and a wider
speed. Thus these are considered to be more fault tolerant and more reliable. This study proposes a 20 kW, three-phase
switched reluctance motor and analyse its overall performance and harmonic contents. The study is conducted by optimising
the slot filling factor, excitation voltage and switching sequence of an asymmetrical half bridge converter. A finite element model
is used to predict the core and copper losses and other influencing parameters. Simulation results are presented and analysed
the effectiveness of the proposed switched reluctance motor (SRM).
Original languageEnglish
Pages (from-to)4220-4225
JournalThe Journal of Engineering
Issue number17
Early online date14 May 2019
Publication statusPublished - 17 Jun 2019

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This is an open access article published by the IET under the Creative Commons Attribution License


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