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Energy-efficient C-dump converters for switched reluctance motors

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3 Author(s)
Mir, S. ; Dept. of Electr. Eng., Akron Univ., OH, USA ; Husain, I. ; Elbuluk, M.E.

Two energy-efficient converter topologies, derived from the conventional C-dump converter, are proposed for switched reluctance motor (SRM) drives. The proposed topologies overcome the limitations of the conventional C-dump converter, and could reduce the overall cost of the SRM drive. The voltage ratings of the dump capacitor and some of the switching devices in the proposed converters are reduced to the supply voltage (Vdc) level compared to twice the supply voltage (2V dc) in the conventional C-dump converter. Also, the size of the dump inductor is considerably reduced. The converters have simple control requirements, and allow the motor phase current to freewheel during chopping mode. Simulation and experimental results of the converters are presented and discussed

Published in:

Power Electronics, IEEE Transactions on  (Volume:12 ,  Issue: 5 )