Fuel Economy, Hypermiling, EcoModding News and Forum - EcoModder.com - View Single Post - Paul and Sabrina's Cheap 3 Phase Inverter (AC Controller) with Field Oriented Control

MPaulHolmes · 09-26-2010, 06:14 PM

I'm very interested to see the difference in price. Cheap IGBTs can be found mostly on Ebay, but not a certain steady supply of new parts. And they are the clear winner at higher voltages, but there aren't a lot of people out there that seem to want to put 300v worth of batteries in their car. Or maybe that's just me. haha. If you can have all the advantages of AC, like regen, and a motor that runs a million miles with no brush changes, and the advantages of DC like lower voltage components, which are sometimes cheaper, and not dying instantly if you touch the batteries. We'll see though. I think the mosfet based one can be done for a few hundred dollars, but would be limited to like 144v or maybe even less if you do much regen.

The igbt one seemed to have an "all new parts" cost of around $2500 if that one open source AC controller price can't be improved upon much.

09-26-2010, 06:14 PM	#399 (permalink)
MPaulHolmes PaulH Join Date: Feb 2008 Location: Maricopa, AZ (sort of. Actually outside of town) Posts: 3,832 Michael's Electric Beetle - '71 Volkswagen Superbeetle 500000 Thanks: 1,362 Thanked 1,202 Times in 765 Posts	I'm very interested to see the difference in price. Cheap IGBTs can be found mostly on Ebay, but not a certain steady supply of new parts. And they are the clear winner at higher voltages, but there aren't a lot of people out there that seem to want to put 300v worth of batteries in their car. Or maybe that's just me. haha. If you can have all the advantages of AC, like regen, and a motor that runs a million miles with no brush changes, and the advantages of DC like lower voltage components, which are sometimes cheaper, and not dying instantly if you touch the batteries. We'll see though. I think the mosfet based one can be done for a few hundred dollars, but would be limited to like 144v or maybe even less if you do much regen. The igbt one seemed to have an "all new parts" cost of around $2500 if that one open source AC controller price can't be improved upon much. __________________ kits and boards Last edited by MPaulHolmes; 09-26-2010 at 06:42 PM..