I have everything, just need to know how to do this. I have a sports car shell so this is really from scratch. I also have prius batteries. Can use some help
DC motors are easier to use for speed controls and power braking.Better get a DC motor and you won`t have to use an AC inverter.Example electric trams are DC motor operated.
You will want to look at Active Front End Inverters which can not only convert DC into AC but during the breaking stage, can convert the AC back into DC, called Common Bus Drives. Otherwise a standard Inverter powers the motor and breaking will be converted into heat, dynamic breaking or mechanical breaking, like it is today. The Voltage and RPM rating of the motor must be understood. Then obtain a Inverter to match the motor. Look at Rockwell Automation Drives and Solutions for Drives. They have a unit which is powering 4 - 125HP drives on a Army truck powered by a diesel generator. More efficient than running a diesel engine to move the truck.
This is perhaps not a good idea. DC motors have much better speed and torque control characteristics. DC motor drives are a lot simpler. Acceleration and control of torque is much better in DC motors. Dynamic braking in AC motors is troublesome and you need additional resistors to dissipate the kinetic energy. For you app, stay with dc. In addition, 20HP is a lot of battery current, if it is going to run any appreciable amount of time. .
You need a lot more than an inverter, you need one that also includes a speed control, as well as the hookup for regenerative braking, and the hookup to control battery recharging. In other words, all of the electronics in a hybrid car. Not something you can easily build, as it involves a lot of special high power devices. And a lot of engineering. I'd hesitate to commit to this unless I had 6 months to study the schematics of the existing hybrids.
