Hi, so im building an H-Bridge for a electric racer, and im now at the point, where i´m to decide how to break.
So how would i go about calculating the amps and voltages i will generate, when breaking from x speed?
It must be something with the mass and speed of the vehicle, combined with the engien specifications. (simple permanent magnet DC 500W engien)
The H-Bridge will use 8 IRF1405 (2 in parrallel), and i was wondering, if these would be able to carry the energy generated by a possible emergency break.
The other option, would be to have a dedicated break board, with either some power resistors, or some mosfets.
if going with the mosfets (which i think would be easiest,) i would PWM the gate with a microcontroller, dependent on how far a footpedal was pushed down.
if going with the power resistors, they would have to be variable in some way, and controllable by a foot pedal.
So all in all, how would i calculate the voltage and ampearge generated by an emergency stop?
So how would i go about calculating the amps and voltages i will generate, when breaking from x speed?
It must be something with the mass and speed of the vehicle, combined with the engien specifications. (simple permanent magnet DC 500W engien)
The H-Bridge will use 8 IRF1405 (2 in parrallel), and i was wondering, if these would be able to carry the energy generated by a possible emergency break.
The other option, would be to have a dedicated break board, with either some power resistors, or some mosfets.
if going with the mosfets (which i think would be easiest,) i would PWM the gate with a microcontroller, dependent on how far a footpedal was pushed down.
if going with the power resistors, they would have to be variable in some way, and controllable by a foot pedal.
So all in all, how would i calculate the voltage and ampearge generated by an emergency stop?