Research On Fuzzy PI Control System Of Switched Reluctance Motor Based On Torque Distribution

Switched Reluctance Motor Driving System has advantages like excellent speed control performance,simple structure,high reliability and low-cost.Thus, switched reluctance motor is widely used in drive and speed regulating field. But structure of Switched Reluctance Motor causes great torquer ripple. A lot of control parameters of SRM such as Phase winding voltage, initial turn-on angle, turn-off angle and its non-linear characteristics cause more complex in control mode. This thesis takes Switched Reluctance Motor speed control and wide range parameter tuning as research topic,to develop the design of low torque ripple and better performance for SRM Driving System.This thesis introduces the development overview of switched reluctance motor and Switched Reluctance Motor Speed Control System research status. To analyse the Switched Reluctance Motor's basic structure, working principle and basic equations, inductance mathematical model of the relationship between the main variables are analyzed. The ways for establishing various parts of the system matlab model are presented, and the system is simulated according to the MATLAB model. The analysis result shows that fuzzy PI speed control has a wide speed range, small torque overshoot and fast response time. Torque distribution function method effectively reduces the torque ripple. On the basis of this the control mode used for SRD is discussed. Using TMS320LF2407 as the core, the system peripheral hardware circuit and software flow. Hardware circuit design mainly includes the main power converter main circuit and driver circuit, the location detection circuit, A/D conversion circuit, PWM output circuit, CPLD logic integrated circuits, over-current protection circuit. Software process, including the main program, subroutines and initialization procedures for starting the process. Finally, the simple experimental plan is designed, and the test platform is built, the control system is being tested, experimental data and experimental results verify the authenticity of the control system.