I am toying around with the idea of making a high powered DC motor controller for an electric car. I want it to be on par with the available controllers (curtis, zilla, et.al I have read about) as far as power handling. They have models that will switch 300+V at 1200+A. I am wondering what kind of technology they use to switch those high currents. My first thought was that they probably use IGBTs, so I went to newark and the highest powered IGBT I can find is rated @ 890A which in itself might be sufficient for my needs, but assuming I want to make a drag strip car, I would want more than that. Can I parallel IGBTs to double the current capacity?
I looked at MOSFETS also and they have even lower AMP capacity. Can those be paralleled? I'm thinking that if either IGBTs or MOSFETS were used, there would have to be some form of load sharing implemented or else one IGBT/MOSFET would switch the bulk of the load until it blew, and then the next one would blow, and so on in a domino effect. How would one set up load sharing like that? OR am I barking up the wrong tree with paralelled components? is there a higher powered MOSFET or IGBT out there?
Thanks
I looked at MOSFETS also and they have even lower AMP capacity. Can those be paralleled? I'm thinking that if either IGBTs or MOSFETS were used, there would have to be some form of load sharing implemented or else one IGBT/MOSFET would switch the bulk of the load until it blew, and then the next one would blow, and so on in a domino effect. How would one set up load sharing like that? OR am I barking up the wrong tree with paralelled components? is there a higher powered MOSFET or IGBT out there?
Thanks