An integrated battery charger base on split-winding switched reluctance motor drive

With the development of plug in electric vehicle(PHEV), the onboard battery charger is received much attention. Compared with independent battery charger, the integrated battery charger can reduce the cost, the weight, the volume and so on. In this paper, an integrated battery charger base on split-winding switched reluctance motor (SRM) drive is proposed. In the integrated motor system, the boost and buck inductances are limited by the phase winding of the motor, so the performance of the integrated battery charger is cut down. In the proposed integrated motor drive, a novel converter topology and split-winding method are used to reduce the inductance and resistor of boost and buck inductances. Compare with conventional asymmetric converter, a relay and a diode are added in the proposed circuit. This topology can be rebuilt as a bridgeless buck-boost battery charger to satisfy the battery charging requirement. The operational modes of two functions are introduced in detail. Some simulation results are done to verify the performance of proposed converters.