I have an electric throttle with three wires ( black, red , green) and I want to know how to connect it to my electric motor and battery which both have only a black and red connector. How do I were it up so that I could control how fast the motor goes with the throttle .? Thank you .
You are trying to run a 24V controller and motor from a 12V battery. The controller is trying to supply the power required but since the volts are half what they should be, the curent is doubled. Thats why the smoke tries to get out. Easy fix though, just get another battery and connect them in series. Did you have the battery polarities correct?
A DC motor's speed is controlled by the voltage applied, an AC motor's speed is controlled by the frequency of the power applied and the number of poles in it's windings. The 1977 Urba Electric car featured on Mechanix Illustrated had the accelerator control the gear ratio of an industrial CVT similar to the ones you'll find on a small portable cement mixer thereby automatically both throttle and regenerative braking without complex electronics. The usual approach to a DC motor control is what's called a chopper control which basically connects the power some of the time, the capacitance of the system and perhap of a capacitor, averages the voltage out to the desired levels. As you have to invert the DC to produce AC for an AC motor, the speed control is done in the inverter. The newer brush-less DC motors are really more like AC motors with a built in inverter, designed to function as if it is a DC motor. Unfortunately, regenerative braking takes a lot more cleverness. You should probably just buy a controller kit from one of the many EV conversion companies.
