Position Sensor Control Based IPMSM Flux Model Is Applicable Maximum Torque Controlled

In the AC drive system of permanent magnet synchronous motor and with aseries of advantages of high efficiency, high reliability, high torque and stronganti-interference ability, it used widely in all kinds of high performance systems. Inrecent years, many scholars do a large number of studies and experiments on thepermanent magnet synchronous motor sensorless control, so that the control methodhas become a more popular research direction in the field of motor control. In view ofthe traditional permanent magnet synchronous motor sensorless control, this paperpresents a model of flux for maximum torque control and based on that of the interiorpermanent magnet synchronous motor sensorless control.Traditional maximum torque per ampere (MTPA) control methods are used to thedrive maximum efficiency of interior permanent magnet synchronous motor. In orderto achieve this control, parameters must be accurate, but because in recent years oneof the most important problems of magnetic saturation phenomenon, the inductancedifference is huge. So, due to the mismatch parameters, maximum torque thanconventional control cannot be the maximum efficiency of the drive IPMSM.In this paper, a new IPMSM with flux model sensorless control has beenpresented and the flux model is insensitive. Maximum torque control(MTC)of the fluxmodel can approximate current vector and it applies to the MTPA control.This paperalso proposes a new flux model based on the embedded type of permanent magnetsynchronous motor approximate surface processing method of permanent magnetsynchronous motor, so that with the id=0control method, it also accomplish goodcontrol. This paper also introduces a decoupling control algorithm based on the fluxmodel. Finally, according to this paper on the basis of new flux observer completed asensorless vector control system, using the MATLAB for Simulink simulationtechnology of motor control, permanent magnet flux model is established based on thenewly proposed synchronous motor sensorless speed control system and complete thesimulation model, and analyze the simulation results. Finally, based on the digitalsignal processor (DSP) TMS320F2812as the control chip, it achieves a simple designof the system hardware and software.