Rod, Matt and anyone who is interested: The work I was talking about was (I hear) done by a professor in Oregon. I will ask around when I get back to work. It doesn't sound practical for an Insight as far as I can tell. Or even the hobbyist. It appears at first glance to help parallel IGBT work without paralleling them electrically. I can post more later if I get more information.
Seth Rod Hower wrote: > > I would strongly recommend using a control that can handle the > power requirements you need. > Even if each control put out the exact same voltage magnitude and > frequency, > there is no guarantee each control will share 1/2 the motor current. > Most likely each phase leg current will be higher in the IGBT or Freewheel > diode with the lowest Vsat or forward diode drop in each control. > IGBT's don't like to be paralleled anyhow, so you would probably go into > thermal runaway on one control. > You would be better off using dual AC motors and dual AC controls. > Just to make life easy I would take the simple route and > use an single AC motor and control with the power requirements you need. > Rod > P.S. What the heck are you building?l
