Abstract

This paper reviews motor techniques for reducing the cost of electric vehicles (EVs) and improving their range. In recent years, environmental issues, energy crises and the greenhouse effect have urged the popularization of clean energy EVs. In order to achieve this goal, it is necessary to overcome technical difficulties in vehicle cost and range. As a key component of an EV, the motor occupies a large proportion of the overall vehicle cost, and its efficiency directly affects the mileage. In this context, this article discusses the merits and challenges of three mainstream EV motors: permanent magnet synchronous motor (PMSM), induction motor (IM), and switched reluctance motor (SRM) in terms of vehicle cost and range. Then this paper compares the advanced techniques of these motors in terms of topology, material applications and control strategies. Finally, the development trends and opportunities of the three motors in EVs are predicted.

Highlights

  • In the past ten years, environmental problems caused by many greenhouse gas emissions have become increasingly serious, which has promoted countries to pay more attention to energy conservation and emission reduction

  • Short mileage and high cost are the main reasons that hinder the popularization of electric vehicles (EVs), and they are closely related to electric motor technology

  • We reviewed the challenges and compensation methods faced by different EV motors to achieve long-range, low-cost EVs

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Summary

INTRODUCTION

In the past ten years, environmental problems caused by many greenhouse gas emissions have become increasingly serious, which has promoted countries to pay more attention to energy conservation and emission reduction. Due to the development of batteries, and the desire to reduce greenhouse gas emissions and improve urban air quality, the electric vehicle (EV) manufacturing industry has begun to receive attention from governments. Compared to internal combustion engine vehicles (ICEVs), the benefits of EVs include zero exhaust emissions, higher efficiency, and the vast potential for reducing greenhouse gas emissions combined with the low-carbon power sector. In this context, many countries have successively announced the goal of achieving 100%. The third to the fifth part of the article sequentially compares the defect solutions of the three EV motors

CURRENT CHALLENGES OF EV MOTORS
MAIN DEFECTS OF IM AND THE CURRENT COMPENSATION METHOD
Findings
CONCLUSION
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