"HVH" means High-Voltage Hairpin. The "hairpin" part is about how the stator is wired and you can ignore that to some extent, but the "high voltage" part is critical. There's no point in using one of these unless you're running it close to the intended voltage... and for the lower-voltage HVH units that is well over 300 volts.
The operating voltage is clearly given in the specs for these controllers. While eBay may be suitable source of cheap controllers, I wouldn't trust any technical information in the listings. Curtis controllers come from Curtis Instruments, which provides lots of authoritative information about them. Yes, they are mostly used for forklift trucks and other industrial equipment, plus golf cars and other small non-roadgoing vehicles. DIY EVs using relatively low (by current standards) voltage appear to be an accidental sideline for them.Controller wise there are a few of these curtis ac controllers second hand for relatively little money are they man enough for the job think these are for forklifts so probs low mph voltage?
Prius batteries are configured for a reasonable voltage, but 2 or 3 of the 16 modules in series will provide a voltage level more appropriate for a golf car than anything using an HVH motor.These are my other battery options then opposed to NiHM
Lithum ion prius batteries approx £700 savaged - maybe 2 or 3 of these £2100
Tesla Module salvage £800 maybe 2 or 3 of these £2400
While in theory an inverter from any EV with a permanent magnet AC synchronous motor at a compatible voltage might work, they are highly integrated with the vehicle. There's no way to use them unless you either emulate the CAN network messages that they are expecting, or replace the logic portion (a serious electronics and software project). I'm no expert on this, but I haven't noticed anyone in this forum using an inverter from a production EV except with the motor that it came attached to... and even then it's a challenge.Could an DC/AC inverter / charger system be used from one of the salvaged vehicles or are they to integrated within the system of the vehicles to operate as a standalone unit?