Who invented the brushless motor?

The father of brushless motor is Li Hongtao. 1995, Li Hongtao "Brushless Electric Excitation Motor" won the first prize of outstanding invention creation in Yunnan Province and the gold medal in the 5th China Patent Invention Expo. However, when Li Hongtao applied for a patent, he used the pseudonym "Yang Hongjun". In the following years, several inventions were granted three invention patents. Due to Li Hongtao's great contribution, the provisions of commutation were reviewed, and the death penalty was suspended and changed to fixed-term imprisonment. He was released from prison in 2009 and started a new life.

Brushless DC motor is composed of motor body and driver, which is a typical mechatronics product.

Because the brushless DC motor runs in automatic control mode, it will not add additional starting windings on the rotor like the synchronous motor with heavy starting under variable frequency speed regulation, nor will it produce oscillation and out-of-step when the load suddenly changes.

At present, the permanent magnets of small and medium-sized brushless DC motors mostly use NdFeB materials with high magnetic energy level. Therefore, the volume of rare earth permanent magnet brushless motor is smaller than that of three-phase asynchronous motor with the same capacity by a cardinal number.