The Research On Speed Control System Of Three-phase Asynchronous Motor Based On DSP

With the development of motor technology, the demand for motorcontrol is also increasing, therefore, it is of great significance that thestudy of motor control technology. Three-phase AC motor control systemhas been developed into an emerging discipline that combinesmulti-disciplinary knowledge, including motor theory, automatic controltheory, power electronics technology, embedded System Control andcomputer control etc. In the technology of AC speed control, as thedemand for greater speed range and faster response speed, VVVFvector control is considered to be the most promising way to speedregulation, for its excellent performance and a wide range ofapplications.In this paper, it describes the PWM inverter technology, andfocuses on the SVPWM and SPWM control technique. It also describesthe induction motor speed control system based on two models. Basedon a dynamic mathematical model, it analyzes the Clark and Parktransforms apply formulas, and it paves the way for the usage of FOCvector control algorithm in the system. The main research contents areas follows,1In the system, it uses TMS320F28335chip. Based on itsadvanced features of floating point and high-speed operation speed, itimproves the speed of motor control by the FOC algorithm.2As for anti-interference characteristics of existing universal vectorcontrol circuit, there is an anti-interference optimized design, and it addsthe reactor to the power supply of control board. And the effect isobvious.3It designs the software and hardware circuits for the entiresystem, and it points out some problems of interference in the hardware debugging process. It proves the feasibility of the system through theexperimental results.