Two-Step Optimum Design Process of PMSM to Improve Driving Efficiency and Harmonics of Lightweight Electric Vehicle

Urban lightweight electric vehicles (EVs) for personal mobility have the advantage of being convenient and economical. Vehicles with low vibrations and high energy efficiency are suitable for use as urban electric vehicles. The torque ripple of the motor that induces the vibration of the EV can be i...

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Bibliographic Details
Published in:IEEE transactions on industry applications 2023-11, Vol.59 (6), p.1-10
Main Authors: Im, So-Yeon, Cha, Kyoung-Soo, Won, Yun-Jae, Choi, Yun-Yong, Lim, Myung-Seop
Format: Article
Language:English
Subjects:
Chamfering
Design optimization
Electric vehicle
Electric vehicles
Energy efficiency
Flux density
Harmonic analysis
Harmonics
Lightweight
Magnetic flux
Motor
Optimum design
Permanent magnet motors
Resistance
Rotor notch
Rotors
Stator chamfer
Stators
Torque
Traction motors
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Summary:Urban lightweight electric vehicles (EVs) for personal mobility have the advantage of being convenient and economical. Vehicles with low vibrations and high energy efficiency are suitable for use as urban electric vehicles. The torque ripple of the motor that induces the vibration of the EV can be improved by reducing the harmonics of the magnetic flux density. The energy efficiency of an EV can be improved by increasing the efficiency at the main operating points (MOPs) by considering the driving cycle. Through the proposed design process, optimization was performed to improve the harmonic characteristics of a high-efficiency lightweight EV with a stator chamfer and rotor notch structure. The harmonics of the magnetic flux density due to the teeth and slots are improved through the stator chamfer, and the fundamental component of the magnetic flux density is increased through the rotor notch structure. The optimum model designed through the proposed design method has improved the efficiency at the MOPs and harmonic characteristics.
ISSN:0093-9994
1939-9367
DOI:10.1109/TIA.2023.3303860