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交流异步电机无速度传感器控制



看了TI的方案,有两个疑问:

1:电流检测采用是的检测U,V相下管对地的电流,此方法与测量U,V相输出电流有什么区别?

2:TI采用的是利用母线电压及PWM系数重建输出电压,此方法与真实测量输出电压误差多少?可靠度多少?

谢谢