Research On Loss Minimization Control Strategy Of Partitioned Stator Hybrid Excited Flux-Switching Machine

The development of electric vehicles is an important measure to alleviate environmental degradation,energy crisis and climate change at this stage.The overall performance of electric vehicles is closely related to its motor characteristics.Permanent Magnet Synchronous Machine(PMSM)is the most widely used motor in the field of electric vehicles,but the Permanent Magnet,as the only excitation source,limits its air-gap magnetic field regulation ability.It is difficult to meet the requirements of wide speed range of electric vehicles.The control ability of air gap magnetic field is improved.The speed control range is widened and the output performance of the Machine is improved.On the basis of inheriting the advantages of PMSM,the direct current is introduced into the field winding.It has broad development potential in the field of electric vehicle drive motor.Taking the Stator Partitioned Hybrid Excited Flux-Switching Machine(PSHEFSM)as an example,this paper analyzes its electromagnetic characteristics,operation principle,and builds its mathematical model and simulation model.Combined with traditional vector Control technology,Active Disturbance Rejection Control(ADRC)technology,response surface analysis,stepwise regression,Sequential Quadratic Programming(SQP)algorithm,and a lossless control strategy suitable for PSHEFSM is proposed.The main contents of this paper include:1.The status and hazards of oil resources are introduced,the development trend and significance of electric vehicles are clarified,the advantages and disadvantages of various types of motors are summarized,the development status of HEM and its control technology is reviewed,and the characteristics and deficiencies of existing control technology are summarized.2.The topological structure,operation mechanism and electromagnetic characteristics of PSHEFSM are analyzed,the mathematical model of PSHEFSM in abc and dq coordinate system is deduced,and the simulation model of PSHEFSM in Matlab/Simulink environment is established.The above contents pave the way for the study of PSHEFSM control system.3.The development,advantages and core content of ADRC technology are briefly introduced.Combined with ADRC technology,the mathematical models of torque observer and voltage observer are deduced,and the simulation models are built in Matlab/Simulink environment,and the simulation verification is carried out.4.JMAG commercial simulation software is used to simulate and calculate the iron consumption of PSHEFSM at different speeds,different armature currents and different excitation currents,and a mathematical model of motor iron consumption is fitted based on response surface analysis and stepwise regression method.A zoning control strategy combining iron consumption ratio and motor speed is proposed.The mathematical model of the problem of minimum loss under different working conditions is analyzed.The SQP algorithm or Fmincon function is used to solve the optimization problem.PSHEFSM control platform is established in Matlab/Simulink,and the performance of PSHEFSM under different working conditions is simulated and analyzed.5.The PSHEFSM experimental platform with d SPACE1103 as the core is built to conduct experimental analysis on the loss-minimization control strategy of PSHEFSM under different working conditions to verify the feasibility of the algorithm described in this paper.