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无感PMSM的开闭环运行问题

Other Parts Discussed in Thread: CONTROLSUITE

电机参数是这样的,额定12000转,我开环只能转到1500转,调节电机参数,PI参数都没有作用,

  

上面是开环时的波形,

有没有人知道该往哪个点去找问题,现在的问题是:1.开环提速不上去,2.在1000--1400转切不了闭环,一直过流,3.反电动势@转速 1.2V/100rpm这个参数在无位置算法中究竟有什么作用,谢谢高人解答!