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TMS320F28027F: InstaSPIN-FOC - regenerative braking considerations

Asif Ahmed
Expert 1570 points
Part Number: TMS320F28027F


Hello -

I am planning to use InstaSPIN-FOC for a traction application. I also plan to incorporate electronic braking - using regenerative braking primarily.

I understand that InstaSPIN-FOC supports all 4 quadrants of operation. My question has more to do with physical circuitry. What types of considerations need to be made with regard to regenerative braking? I know I need to be able to handle any voltage transients above the motor max voltage that may occur. I am planning to use MOSFETs and bulk caps with a decent voltage margin to help with robustness (i.e. 48V motor, 75+V MOSFETs and caps). What other considerations do I need to think about here?

Any advice is much appreciated.

Best,

-asifjahmed

  • 0
    TI__Guru** 116140 points

    It's better to add a braking system to control dc bus voltage if you want to run motor using four quadrant drives and need to stop the motor very quickly, The braking system can use dynamic brake circuit with to discharge high voltage DC bus simply, or use regenerative converter to regenerate the electrical energy from the motor to power supply, and control dc bus without voltage boost, to protect motor, MOSFET and capacitor.