Design of brushless motor control system based on FOC algorithm

Abstract

This paper presents a design of Brushless motor control system based on FOC algorithm. The hardware is composed of Main Control Board, drive board, voltage stabilizing circuit, full-bridge Circuit of inverter and current sampling circuit. Through coordinate transformation, SVPWM and extended Kalman filter, the closed-loop control of the motor is completed. The system not only avoids the shortcomings of the traditional Brushless motor control algorithm, but also improves the operating efficiency of the motor system. In addition, FOC combined with no position sensor algorithm improves control efficiency, reduces process cost and expands application range.This case is integrated into the teaching process of motor, which improves students' interest in learning and engineering practice ability.