If 2 guys can lift a 60Hz industrial motor, I doubt they have enough HP to drive a car.
What are the nameplate ratings?
What are the nameplate ratings?
Not quite - a VFD can have any control method, but it is true that industrial drives most commonly accept a speed request as an input, rather than a power or torque request.Industrial VFDs just output a frequency, whereas an EV uses the accelerator pedal position to command a certain torque (as opposed to speed).
As already noted, most industrial motors are induction type, and VFDs are routinely used to control them.They also use permanent magnet synchronous motors with rotor position feedback, not induction motors that have slip.
Yes, in general all VFDs rectify the input power to DC, and it may be feasible to provide DC power from the battery to the DC stage of the VFD, using on the inverter section and removing (or just disregarding) the input rectifier.I'm not sure about all VFDs, but I know some of them rectify the input to DC, so maybe in theory you could connect the battery there?
Perhaps you mean industrial induction motors? The entire HPEVS motor line is induction, the Siemens motors used by Azure Dynamics and many conversions since are induction, and of course all Tesla motors before the Model 3 are induction.Generally, induction motors are not considered suitable for ev conversions.
There are "sensorless" controllers, and a sensor can be added to a motor. By the way, induction motor control uses speed sensing, not position sensing (although of course the rate of change of position is speed).Using an ev inverter on an induction motor would probably be problematic, not least because of the lack of position feedback.
Generally, the motors aren't the expensive part of doing a conversion. You do have the option of getting nearly free and more suitable motors, if that's your restriction. Batteries is the corner you probably can't cut.Ah well probably best to forget about that on then, nevermind.
Honestly, very few people will ever recover the costs of doing a conversion, in the gasoline saved. You make an EV because you want to, not because it's cheap to.I guess I'll just carry on getting into debt having to pay for Petrol. Doesn't help that I have a 2.5l engine!