Research And Implementation Of Permanent Magnet Synchronous Motor Controller

Under the support of the new power electronics topology technology,device manufacturing technology,micro-controller chip technology and advanced intelligent control theory.The solution of AC speed control system are increasingly used in industrial manufacturing and energy utilization applications.Permanent magnet synchronous motor occupies an important position in AC speed regulation system due to its advantages of large power density,high efficiency,and various structures.The efficient use of permanent magnet synchronous motors needs to be coordinated with the relevant controllers.The basic permanent magnet synchronous motor controller uses the traditional vector control method based on field orientation.The current and speed parameters are adjusted using classical PID control.This article describes the development of permanent magnet synchronous motor control and establishes the mathematical model of permanent magnet synchronous motor.Under the basic idea of vector control,the speed and current control strategy are studied.The speed control is based on the measurement of velocity to establish a direct sliding mode controller.The current control establishes a model of voltage feed forward decoupling.In order to widen the speed range,a method of calculating the lead angle is used to re-allocate the AC axis current to realize the field weakening control.In the MATLAB/Simulink simulation environment,a double-closed-loop control system model of speed and current was established to verify the effectiveness of the above method.Based on the analysis of the mathematical model and the vector control scheme,the sensorless control system model of the permanent magnet synchronous motor based on the sliding mode observer is established.It provides a theoretical basis for the simulation and experimental research of sensorless vector control.The simulation is also performed in MATLAB/Simulink.The simulation results show the effectiveness of the method.Under the conditions of theoretical calculation and simulation verification,a set of towed experimental platform based on 750 W permanent magnet synchronous motor was built.Using TI's high-performance TMS320F28335 controller hardware and software design and implementation.The software system using CCS6.0 development platform to achieve the integration of the control strategy.Hardware system using IPM power main circuit,ADC circuit,voltage detection circuit,switching power supply circuit,display communication circuit,position detection circuit,etc.Under the cooperation of software and hardware,the feasibility and correctness of the control strategy are verified.The motor can operate stably under no load and with load.