关键词: 永磁同步电动机, 功率驱动, DRV8332, 电流检测, 矢量控制

Abstract:

In order to satisfy the requirements of the small and medium power permanent magnet synchronous motor control and drive, a kind of integrative micro driver based on DSP and DRV8332 was designed. The DSP-TMS320F28069 was employed as the main controller and the DRV8332 which is high performance drive integrated circuit chip, was utilized as power driver. The system was composited of high speed controller and high integration driver, which made the system simpler, compact packaging, and low cost. Vector control was used to conduct the experiments and hardware test on the driver. The motor could track the step speed command of ± 240 r/min, used Kalman filter, the steady-state accuracy was within ±1 r/min, and the current detection accuracy was ±0.025 A. The experimental results demonstrated that the designed driver had the advantages such as good control performance, high detection precision and strong universality. The design is an excellent driver which can be widely applied to small and medium power permanent magnet synchronous motor control and drive.

Key words: permanent magnet synchronous motor, power drive, DRV8332, current detection, vector control