Permanent magnet synchronous motors have become the mainstream trend

At present, the proportion of permanent magnet synchronous motors used in new energy vehicles in China exceeds 90%, and AC asynchronous motors are mainly used by American car companies led by Tesla and some European companies. On the one hand, this is related to Tesla's initial technological path selection, where the price of AC induction motors is low, and the larger size does not affect American cars; On the other hand, the United States has a well-developed highway network, and the efficiency and performance of AC motors in high-speed sections are excellent.

Permanent magnet synchronous motors are still widely used in new energy vehicle motors in other countries, including China and Japan. The suitability for domestic road conditions is the main factor, and permanent magnet synchronous motors can still maintain high efficiency during repeated start stop, acceleration and deceleration, making them the best choice for conditions with limited high-speed road networks.

In addition, China has abundant rare earth reserves, and the supporting foundation of Japan's rare earth permanent magnet industry is also an important factor. Japanese car companies such as Toyota, Honda, and Nissan mostly use permanent magnet synchronous motor drive systems, such as Toyota's Prius and Honda's CIVIC. Because there are many companies in Japan that supply rare earth magnets for permanent magnet motors, and most cars operate at medium to low speeds, it is more suitable to use permanent magnet synchronous motors with higher efficiency during acceleration and deceleration.

Japan is leading the world in the development of hybrid vehicles, with Toyota Prius Z being the most famous.

Overall, the motor technology requirements for new energy vehicles are relatively high, and permanent magnet synchronous motors have the most advantages. The drive motor is one of the three core components of new energy vehicles, and compared to traditional industrial motors, the drive motor of new energy vehicles has higher technical requirements. From a comprehensive performance perspective, permanent magnet synchronous motors have advantages and can better represent the development direction of new energy vehicle drive motors.

Due to the extremely abundant rare earth reserves in China and the fact that the motor technology has approached the world's advanced level, it is expected that permanent magnet motors will occupy the motor market of new energy vehicles in China for a long time.

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