Abstract
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.
Highlights
With the development of automobile industry and the improvement of people’s living standard, automobile has become one of the necessities for most families
When the hybrid vehicles are driving in a normal state on the smooth section of the road like the highway, the engine works normally
A novel converter proposed is proposed in this paper, which is modified based on the traditional converter topology with a three-phase rectifier and battery modules (BMs) at the front end
Summary
With the development of automobile industry and the improvement of people’s living standard, automobile has become one of the necessities for most families. STARTING When hybrid vehicles are starting or running at a low speed, such as running in urban areas requiring frequent stop-starts and low speed, the system needs less kinetic energy and only uses the SRM for the system to provide kinetic energy It can be realized by using only two BMs to meet the system requirements, and at the same time, the engine can avoid working in the low-efficiency working area for a long time. When the phase-A winding is in the excitation phase, each BM supplies power to the back end At this time, the bus voltage is the sum of the voltages of the four batteries. Where θon ≤ θ ≤ θoff is the excitation interval of phase A, and θoff ≤ θ ≤ θcl is freewheeling interval of phase A
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