Modeling, Control and Seamless Transition of Bi-directional Battery-Driven Switched Reluctance Motor/Generator Drive based on Integrated Multiport Power Converter for Electric Vehicle Applications

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Abstract
This paper proposes a generalized control method for battery-driven switched reluctance motor (SRM) drives based on integrated multiport power converter (IMPC) with small-ripple bidirectional power flow ability in electric vehicles. Large power ripple caused by the current commutation is a challenge issue for SRM drives, which would lower the system efficiency, requires extra heat dissipation in the battery and shortens its lifetime. The detailed model of the SRM drive and IMPC is developed which covers both motoring and generating modes of operation. Based on this model, an advanced multiobjective power flow control method with repetitive controller is proposed to restrain battery current ripple. Because of the unified model, a seamless transition between various modes can also be achieved. Finally, simulation and experimental results demonstrate the feasibility and superior performance of the proposed control method.

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