Hi mr,I have an opportunity to acquire a Baldor industrial motor, model CP3773T. This has the following specs:
15HP, 480V, 18 AMPS, 3450RPM, 60HZ, shipping weight 226 Lbs.
The seller is asking a very, very low price. I am curious as to whether or not I could apply this to an EV conversion.
Assuming that I can acquire or invent a controller (which I can), can a motor like this be run at, say, 120-180 Hz for extra power and top speed? Would modifications would be necessary and, if so, what are they?
For a 480 VAC motor you'll need like a 650 VDC battery. Possible for an EV, but using a 230 VAC requiring a 320 V battery is easier.
Also, I recommend using a 4 pole motor, so look for 60 Hz speed around 1750 RPM.
It is possible to run induction motors at higher speed with higher frequency. But if you are unable to proportionally increase voltage with frequency, you'll lose torque above base frequency and therefore not get increased power due to increased RPM.
Modifications to the motor? Rewind and cooling system. Maybe balance and bearings.
You seem to treat the inverter lightly. This can be a challenging task even for those skilled at it. See if you can find etischer's build thread and search this site for other ACIM discussions.