I was planning on building an electric car hopefully weighing around 500KG and i was looking at a three phase motor rated 52.3A at 400V and was wondering how to convert/invert the power from a single phase DC power from batteries, to a three phase AC power to run the motor, i have looked a inverters but they all say, that if you put a single phase power source into it you can only power a max of a 3Kw motor, so i was thinking if i could maybe use 2 inverters, not sure if thats possible or not, or if someone has had experience in this and know a way of doing this as i cant get mains power to a moving car, anyway if anyone knows how to do this please let me know, i would be so grateful as i have spent at least 24+ hours trying to research this.
you have selected an electric motor used for a diesel electric locomotive. they don't convert battery power to make 3 phase 400 volts. instead they use a diesel engine to run an electric generator. 52.3 amps at 400 volts would require 1740 amps from a 12 volt source. your car would need 10 giant 200 amp-hour batteries, that would be about 1000 kg of weight by itself. the only practical way to get 3 phase power from a DC source is with a motor-generator. think about it, using a motor to rotate a generator to run a motor is highly inefficient power conversion. you need to stick with a DC motor, one of reasonable size, that can be powered by a battery bank that weighs in at under half the total weight of the vehicle. 5 KW single phase is about the maximum power that can be generated by practical inverters. but you would not be able to run a 5 KW motor from that, because inverters have no surge capacity to deliver the start up motor current. that is another reason you need to stick with a DC only power system.
If it is made for electric cars, they will make controllers for them. For some reason, I think you are trying to use a motor made for fixed industrial equipment, not to move a car.
