关键词: 霍尔传感器, 正弦波矢量控制, 永磁无刷轮毂电机, 矢量跟踪观测器

Abstract:

In the application of direct drive of electric vehicle hub motor, it is necessary to avoid the occurrence of large torque ripple, so high-precision location information is critical. An improved method for the sine wave vector control of permanent magnet brushless hub motor was presented. The vector tracking position observer combined with the output signal of the Hall sensor can accurately extract the rotor position information. The structure included a position error detector based on the stator side back electromotive force vector and a proportional integral controller which made the position error converge to zero quickly. This structure not only solved the problem of the low precision of the Hall sensor, but also enhanced their dynamic position detection ability. The proposed method has been used in the permanent magnet brushless hub motor vehicle driver and carried out experimental verification.

Key words: hall sensor, sine wave vector control, permanent magnet brushless hub motor, vector tracking observer