Research On ISG Of Ferrite Permanent Magnet Assisted Reluctance Synchronous Motor

At present,most of ISG permanent magnet synchronous motors are made of rare earth permanent magnet materials.The motor is facing cost and safety challenges.Therefore,this paper studies ISG ferrite permanent magnet assisted reluctance synchronous motor.ISG ferrite permanent magnet assisted reluctance synchronous motor uses multi-layer rotor structure and ferrite material.It has high performance-price ratio,low risk of high-speed overvoltage and stable performance at high temperature.Therefore,it is of great practical significance to study ISG ferrite permanent magnet assisted reluctance synchronous motor.In Chapter 1,the research status of permanent magnet assisted reluctance synchronous motor is summarized,and the operating conditions of ISG motor and the demagnetization of permanent magnets with different materials are summarized,then the importance of multi-domain simulation technology is highlighted.In Chapter 2,the power system parameters of the 06 Civic ISG motor are matched and the main technical parameters of the ISG ferrite motor are determined.The main dimensions design and pole slot matching of ISG ferrite motor are discussed and summarized.According to the performance and design characteristics of ISG ferrite motor,the better rotor structure is selected.The influence of H and beta changes on the performance of ISG ferrite motor is quantitatively analyzed by using control variable method.In Chapter 3,the electromagnetic simulation analysis of ISG ferrite permanent magnet auxiliary reluctance synchronous motor in power generation/electrical state is carried out.Simulate the power generation of the motor with no load and load,and verify the rationality of the motor structure design.Analyze the difference of load current waveform under different working conditions and calculate the power generation efficiency of the motor.Through the simulation of the electric state,the torque performance and the torque capability of the motor are evaluated,and the efficiency MAP diagram is made.The effect of permanent magnet partial demagnetization on motor performance is analyzed by comparing the demagnetization of motor in power generation/electric state.The methods of improving the demagnetization resistance of permanent magnets are summarized.In Chapter 4,this paper is based on the ANSYS simulation platform for multi-physics simulation analysis of the motor.Aiming at the complex structure of ISG ferrite permanent magnet assisted reluctance synchronous motor(PMASym)rotor and the small width of magnetic bridge,the mechanical strength of the motor is analyzed.The influence of different loads on the stress distribution of the motor under various working conditions is studied,which provides an important reference for the structure design of the motor.Using ANSYS software and the secondary development function of ADVISOR software to modify the motor module parameter simulation ISG ferrite permanent magnet auxiliary reluctance synchronous motor in different cycle conditions and different operating conditions of the motor part of the loss.The air gap and stator winding thermal conductivity are calculated by equivalent method.The temperature distribution of ISG ferrite permanent magnet assisted reluctance synchronous motor under cyclic and operational conditions is simulated and analyzed.Then determine the highest temperature rise of each part of the motor and verify the reliability and rationality of the motor solution.In Chapter 5,this paper summarizes and prospects the full text,highlighting the main points of this study.