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

P-hack · 12-12-2014, 01:49 AM

It's doable, but 3 phase motors can boost on regen down to almost 0mph, so the half bridge boost out/buck in one inductor design pretty much covers all the bases. The capacitor version will be more complicated at a minimum, and has more opportunity for shoot through, and seems to have about 2x the current spikes on the battery in boost mode (uH=uF).

What problem are you trying to solve I guess is a fair question?

Worth noting that interleaving topology does a nice thing for inductors in that you can quasi-parallel them without the loss in uH (and smaller cores seem to be more readily available).

12-12-2014, 01:49 AM	#1427 (permalink)
P-hack Master EcoModder Join Date: Oct 2012 Location: USA Posts: 1,408 awesomer - '04 Toyota prius Thanks: 102 Thanked 252 Times in 204 Posts	It's doable, but 3 phase motors can boost on regen down to almost 0mph, so the half bridge boost out/buck in one inductor design pretty much covers all the bases. The capacitor version will be more complicated at a minimum, and has more opportunity for shoot through, and seems to have about 2x the current spikes on the battery in boost mode (uH=uF). What problem are you trying to solve I guess is a fair question? Worth noting that interleaving topology does a nice thing for inductors in that you can quasi-parallel them without the loss in uH (and smaller cores seem to be more readily available). Last edited by P-hack; 12-12-2014 at 09:59 AM..