基于dsPIC30F6010的无传感器无刷直流电机控制

Sensorless brushless DC motor control based on dsPIC30F6010

本文使用dsPIC30F6010来控制无传感器无刷直流(brushless DC,BLDC)电机,采用反电动势过零检测技术来确定转子的位置,两种可选的起动方法以适应特定负载,使用内部电流控制环来设置PWM占空比,速度控制环作为外部控制环。所实现的无传感器控制算法特别适用于风扇和泵。

In this article, it uses the dsPIC30F6010 to control sensorless brushless DC motor, using back EMF zero crossing detection to determine position of the rotor, two alternative starting methods to meet the specific load, using the internal current control loop to set the PWM duty cycle and the speed control loop as an external control loop. The implemented sensorless control algorithm is especially suitable for fans and pumps.