I have an 2000w 60v sensored brushless motor and controller setup such as would be found in an electric bike etc, that I would like to get to run in both directions. (Single direction controllers).
This unit is for an electric boat that previously had a lower powered brushed motor. On that setup I achieved throttle using potentiometers (0-5v) and reverse using a DPDT switch that swapped final polarity to the motor.
Using the new motor, I plan to control forward and reverse all from a single rotary pot feeding an Arduino.
A have my head around everything except the best way to swap 2 of the 3 phase wires (60v 30+A) and 2 of the three sensor wires from the controller to the motor digitally.
Because the phases are in constant fluctuation as the motor turns and I assume polarities are also swapping from the controller, as well as potential latency issues I don't think a H bridge would suffice. (Am I right)?
Also because of the high current involved, it seems standard relays aren't up to the task. Could I run high power transistors or relays in a parallel arrangement to achieve this?
Any ideas are much appreciated.