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bwilson4web · 12-01-2009, 02:35 PM

Several of us have spare inverters but the electrical interfaces to the inverter are not well documented. Good Prius friend Hobbit has looked closely at an NHW20 inverter. I've been a little slow but it is on my 'to do' list.

I've always figured I'd have to 'scope out' the likely signals but that remains on my "to do" list.

The Prius MG1 and MG2 are AC motors in a "Y" electrical configuration, three-phase. I don't know what typical EVs use for motors.

Encoder signals from the motors flows to the hybrid vehicle ECU that drives the circuits. It uses a high frequency, 90 degree offset, stimulus/sensor coils around an excentric disk. But again, the exact signals are poorly understood.

Bob Wilson

12-01-2009, 02:35 PM	#2 (permalink)
bwilson4web Engineering first Join Date: Mar 2009 Location: Huntsville, AL Posts: 843 17 i3-REx - '14 BMW i3-REx Last 3: 45.67 mpg (US) Blue Bob's - '19 Tesla Std Rng Plus Thanks: 94 Thanked 248 Times in 157 Posts	Several of us have spare inverters but the electrical interfaces to the inverter are not well documented. Good Prius friend Hobbit has looked closely at an NHW20 inverter. I've been a little slow but it is on my 'to do' list. I've always figured I'd have to 'scope out' the likely signals but that remains on my "to do" list. The Prius MG1 and MG2 are AC motors in a "Y" electrical configuration, three-phase. I don't know what typical EVs use for motors. Encoder signals from the motors flows to the hybrid vehicle ECU that drives the circuits. It uses a high frequency, 90 degree offset, stimulus/sensor coils around an excentric disk. But again, the exact signals are poorly understood. Bob Wilson __________________ 2019 Tesla Model 3 Std. Range Plus - 215 mi EV 2017 BMW i3-REx - 106 mi EV, 88 mi mid-grade Retired engineer, Huntsville, AL