Research On The Control Technology Of High Speed Switched Reluctance Motor With Axial Misalignment

Switched reluctance motor(SRM)has been widely studied because of its advantages such as simple structure,low price and strong robustness.However,due to its double salient pole structure and strong non-linearity,the development of SRM is hindered due to its large torque ripple.The axial stagger high-speed switched reluctance motor(SRM)studied in this thesis is a three-phase(6/4)motor,which is composed of two groups of stator salient pole structure.The mutual stagger between the two groups of rotors is 15°,and only the stator tooth is entangled with an excitation coil,which theoretically reduces the adverse effects of the SRM,such as unstable torque ripple and unstable operation.Due to the special structure of axial staggered Angle high-speed switched reluctance motor,its magnetic circuit is complex,which increases the difficulty of motor control system construction.High-speed switched reluctance motor has the characteristics of high reliability,strong robustness and strong applicability.It is necessary to build the control system of axial stagger high-speed switched reluctance motor.First of all,this thesis theoretically analyzes the basic topological structure and working principle of the axial misalignment high-speed switched reluctance motor,establishes the mathematical model of the motor,and analyzes the characteristics of the motor through ANSYS software.In this thesis,a comprehensive control strategy combining various control modes in different speed regions is proposed to satisfy the stable operation of the motor in the whole speed range.Secondly,Maxwell,Simplorer and Simulink were used to build the system model of axial mis-angle high-speed switched reluctance motor.Through the simulation results,the applicability of each control strategy is compared and analyzed.The analysis results show that the single control strategy and the comprehensive control strategy can improve the stability of the motor operation.Finally,based on the simulation,a hardware control platform with DSP TMS320F28335 as the core controller and IKCM30F60 GA as the core power converter is built to debug and realize the smooth operation of the motor.The experimental results show that the integrated control strategy of axial staggered high-speed switched reluctance motor is in line with the expected goal.Because of the special rotor structure of the motor,the torque ripple is smaller than that of the traditional switched reluctance motor.The related work in this thesis can be used for reference in other high speed motor occasions,and it is of great significance to promote the development of high-speed special motor control technology.