Modular Battery Management for SRM Drives in Hybrid Vehicles Based on a Novel Modular Converter

Hybrid vehicle is an important development direction of the automobile industry to solve environmental problems. A switched reluctance motor (SRM) is one of the main choices for its drive system. A novel converter topology of SRM is designed in this paper. The novel converter can realize multi-level control and battery energy management. The battery control circuit is designed in a modular way and the number of battery modules (BMs) can be selected according to system requirements. According to the driving condition of a hybrid vehicle, the condition of converter is divided into five states and analyzed in detail respectively. Finally, the simulation model and experimental platform of the novel converter are built. The simulation and experimental results verify the feasibility of various working modes of the novel converter topology, and each BM can be controlled independently, greatly improving the fault tolerance and reliability of the system.