VFD switched frequency
VFD switched frequency
(OP)
I have a problem with a VFD and a syncronous motor permanet magnets (10 kw 100 hz 400 V), i had asked before some tips, now i could start up without flashing... with a 10khz,the motor have electrical arc between rotor and stator.... and then, i reduce to 3 khz the electrical arc dissaperar, but the people from the VFD said that it´s better for the motor to work on 10 khZ and with a ground between rotor and stator....
what do you think? what would be the best switching frequency for this motor? I think it´ll have a high L that will filter the 2 Khz sgnal?
what do you think? what would be the best switching frequency for this motor? I think it´ll have a high L that will filter the 2 Khz sgnal?





RE: VFD switched frequency
What kind of "flash" is it you are seeing? Is it EDM in the bearings? Or an actual arc from rotor to stator?
Gunnar Englund
www.gke.org
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100 % recycled posting: Electrons, ideas, finger-tips have been used over and over again...