I have this 01 inverter and I am wanting to use it for my electric vehicle. I have converted 3 vehicles to DC systems, but now am wanting to use this new AC system. I have the HV battery wiring harness and enough batteries. Does anyone know about any of the other harnesses and sensors like the throttle? Is it a pot? Do I need the computer and radio/info screen for it to work or can I use it without these? Any input would be appreciated. I do know about the M1 and M2 hook ups. Thanks brian
You are in new territory. Do you have the Toyota schematics? Do you have a working NHW11 to reverse engineer the interfaces? Bob Wilson
I have bought the manuals and they are pretty vague. I also have purchased downloaded pages and pages of diagrams and nothing conclusive. When I get the info I need, I will pass it along for anyone else interested. I don't want to blow the inverter so I am proceeding with caution. Thanks for the response..
Very interesting project. I have nothing to really contribute but I am sure it is possible. The best would be to get or rent a working system, attach some scopes to the control/data inputs and drive it. Even just a little bit of data would go a long way in trying to reverse engineer it. I am not familiar with the NHW11 so I am not sure if there is a hyrbid ECU that controls it and might make an easier probe point.
It ain't nearly that simple. Have a look at US patent # 6131680. The main ECU looks at two pedal input voltages, and for each motor an RF-based sine/cosine based position resolver to determine exact rotor position, and then modulates three high/low leads to the power transistor rack out in the inverter itself. Current sensors on two out of three of the 3-phase leads are also monitored to figure out that phasing and power flow is correct. . You might be able to come up with a simpler redneck way of firing the coils, but it's going to be nowhere near as efficient and smooth as the full Prius system unless you do some really deep reverse-engineering of how the system works as designed. This isn't trying to discourage you, just giving you the bigger picture of what you're up against... . _H*
I know "rigging it up" is going to be difficult. For that reason I am trying to get most of the components from a Prius so it has all of the switches and sensors needed to function. Here is a picture..... nwaev.com/prius2.jpg
Perhaps the first step is to mount the inverter on bench fixture and prepare: 5 VDC, supply 2-5 A. - enough for your test circuits to sense and drive the inverter 12 VDC, supply 10 A. - enough to power the inverter. 270 VDC, high Z power supply, 1 A. - treat this as the hazard it is but there is no need for a lot of power in a test power supply. two sets, of three bulb loads - tie the three bulbs, 40 W, on one side to a common point and the three other leads go to MG1 and MG2 interfaces. try to drive the inverter to enable power to the light-bulb loads standing in for MG1 and MG2. Once you are able drive the inverter phases, you're next problem will be ramping up to power loads. But first, bench test and figure out the driving signals needed. Since you are dealing with the NHW11 inverter, you might consider using the "report" icon on the lower left of your first posting and ask the moderators to move it to the Generation I, NHW11 forum. This forum is really the place for the ZVW30, whose inverter include buck/boost operation. Are you working to a schedule? How are you set for test instruments? Bob Wilson
I will prepare those items and post when complete. I was driving a 98 Escort with a 36v 700 amp controller. It wasn't very efficient, but it did keep me from buying gas and I would like to get back to that!
