Not really Arduino related yet, but any suggestions are welcome.
I’m planning on building an electric UTV of sorts. I have some 24V 133A (continuous duty) series wound DC motors and I would like to mechanically and electrically link two of these motors together, to get enough horsepower.
I’m thinking of connecting them in series with a DPDT contactor between the armatures and the fields for reverse. Attached, is a simple circuit. I still have to figure out the specific mosfets and how many in parallel, drivers etc.
I’m thinking that series connection is better than parallel, as I don’t risk one motor trying to outperform the other, and also wire gauge is more manageable.
- Is the circuit correct (not taking into account, the simplified mosfet circuit)?
- Do I need flyback diodes, or is the diodes in the mosfets sufficient?
- Where would be optimal to place noise suppression capacitors?
 Just realized that the mosfet body diode can not be used in this configuration, so the question should be: “where is the optimal placement of flyback diodes in this circuit?”