Design And Simulation Of Split Switched Reluctance Double-rotor Motor For Hybrid Electric Vehicle

With the rapid development of automobile industry and people’s increasing concern for environmental protection,hybrid electric vehicles have been widely concerned.Its hybrid coupling system has gradually become a research hotspot in recent years.At present,the hybrid coupling system of hybrid electric vehicle is mainly divided into two categories.One is the mechanical hybrid coupling system equipped with planetary gear or gear pair,in which the planetary gear can realize the speed coupling and the gear pair can realize the torque coupling.At present,the research has been more mature and has been applied in practice,which is the mainstream choice of hybrid electric vehicle.The other is the electromagnetic coupling system equipped with dual rotor motor,which avoids the shortcomings of traditional mechanical system such as gear friction,noise,vibration and so on,and has compact structure,light weight,flexible control,and can realize speed coupling and torque coupling together.The electromagnetic coupling system is one of the research hotspots of hybrid power coupling system.At present,the research on dual rotor motor is mostly focused on the concentric configuration of permanent magnet.In this paper,a new type of Split Switched Reluctance Dual-Rotor Motor(SSR-DRM)is designed.The operation mode,electromagnetic simulation and control strategy of SSR-DRM are analyzed.The feasibility of SSR-DRM design scheme is verified by simulation.The specific research results are as follows:Firstly,a new type of Split Switched Reluctance Dual-Rotor Motor(SSR-DRM)is designed according to the current dual rotor motor scheme and the application characteristics of hybrid electric vehicles.The structure characteristics and working principle of SSR-DRM are analyzed theoretically.Meanwhile,the parameters of the motor are designed to determine the main structure size,power,material,type and other basic parameters of the motor.Secondly,for the SSR-DRM after the design of structural parameters,the static and dynamic electromagnetic simulation analysis is carried out by using the simulation software Ansoft Maxwell to verify the rationality of the basic parameters of the motor,which can meet the basic power requirements of the hybrid electric vehicle.In addition,in order to improve the output performance of SSR-DRM,genetic algorithm is used to optimize the stator and rotor pole arc coefficient,air gap width and yoke height of the motor.The analysis of the optimization results shows that the performance is improved.Finally,in order to study the torque fluctuation of SSR-DRM under the control strategy mode and the output of SSR-DRM under the given conditions,based on Matlab/Simulink software,the vehicle driving equation and engine characteristic curve are introduced,and the control simulation model of SSR-DRM is built.The simulation results show that the output meets the requirements of the given value under the given input conditions,which directly verifies the effectiveness of the proposed method.The feasibility of applying torque control to SSR-DRM is discussed.Through the research on the parameter design,structure optimization and control strategy of the Split Switched Reluctance Dual-Rotor Motor,the rationality and feasibility of the Split Switched Reluctance Dual-Rotor Motor are verified theoretically,and the design idea and process of the Split Switched Reluctance Dual-Rotor Motor are formed,which provides reference value for the follow-up research of SSR-DRM.