Recent content by Mr.K

Shouldn't the output wave form depend on what reference waveform that is used in the control? In the AN1078 case the code is for Space Vector Modulation (SVM) with a output waveform like this. Phase voltage https://dl.dropbox.com/u/53678622/665rpm-Vph.png Line voltage...

I didn't expect to be this popular :shock: I'm not a motor designer, but I'm doing my master thesis about control of salient pole permanent magnet motors right now. The graph is from this book, but i don't think they cover demagnetization of the magnets in it. Advanced Electrical Drives...

I think it's more about the direct axis current than the power, if you drive the d-axis current past the MTPF line there is a chance of demagnetization. But not all motors has the short circuit point inside the maximum current circle and will therefore not be susceptible for demagnetization...