The Prius inverter is a fairly undocumented part with some impressive power electronics and internal control circuits. But Toyota has not been very 'open' about the exact specifications. The maintenance manual and SAE papers give some clues but it was really designed to work with the associated MG1 and MG2 in the transaxle.
What you have is an NHW11 inverter, 2001-03. Some of coarse specifications are available via Wiki:
- MG2 - 33 kW, 44 hp
- ~275 VDC traction battery - 20 kW maximum draw
- MG1 - 14.5 kW, 19 hp (from memory!!!)
Now the interesting thing is a significant amount of power flows between MG1 and MG2 all the time. What I don't know (no one knows) is if you could drive MG1 and MG2 from a combined 33+14 ~ 48 kW, ~64 hp. But the battery leads were designed for something under 20 kW. Worse, to make it work, you'd need three traction battery packs and balancing multiple packs is not a trivial problem. So then you start looking at building this 275 VDC, +48 kW battery pack and that too is not trivial.
My interest is in something a little more modest ... house co-generation. It should easily handle generating up to 14 kW of pure sine wave from a running, parked Prius. This would be a very, very nice thing to have.
Bob Wilson