Dynamic Characteristics of Permanent Magnet Synchronous Motor in Automobile Drive System

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AUTO ELECTRIC PARTS ›› 2025, Vol. 1 ›› Issue (12) : 28-30.

New Energy

Dynamic Characteristics of Permanent Magnet Synchronous Motor in Automobile Drive System

Dang Haizhao¹, Jiang Li¹, Yuan Minghua¹, Wang Mingyao¹, Wang Tao²

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Abstract

With their high power density, efficiency, and excellent dynamic response characteristics, permanent magnet synchronous motors have become the core power unit in new energy vehicle drive systems. This paper investigates their dynamic characteristics at the system level. By constructing a mathematical model in the d-q coordinate system, we analyze the response processes of electromagnetic torque, rotational speed, current, and external disturbances, elucidating the mechanism of torque fluctuations and parameter coupling. The results demonstrate that rational structural design and dynamic control strategies can significantly enhance motor response speed and system stability, providing theoretical and technical support for optimizing the driving performance and energy efficiency of electric vehicles.

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PMSM / vehicle drive system / dynamic characteristics / vector control / model predictive control

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Dang Haizhao, Jiang Li, Yuan Minghua, Wang Mingyao, Wang Tao. Dynamic Characteristics of Permanent Magnet Synchronous Motor in Automobile Drive System[J]. AUTO ELECTRIC PARTS. 2025, 1(12): 28-30

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