The Speed Control Of Pmsm Based On Two Kinds Of Advanced Strategies

The permanent magnet synchronous motor is more and more widely applied in the industry, agriculture and other fields because of the advantages of simple structure, small volume, high power factor, big power-to-weight ratio, light weight, low noise, reliable operation. With the development of control technology, modern Permanent Magnet Synchronous Motor drive system with high performance need the controller with rapid response, good robustness, easy realization in project. So how to improve the PMSM system has been the focus of the study.The paper focuses on Permanent Magnet Synchronous Motor (PMSM) and its control system, and builds the different dynamic mathematical models in the A-B-C and d-q coordinate systems based on the principles and characteristics of PMSM. Then, the paper researches on the Space Vector Pulse Width Modulation and wave generation. Lastly, the paper introduces the sliding mode control and auto-disturbance rejection control respectively. On this basis, aiming at the problem in these two kinds of control strategies, the paper improves the disadvantages in two kinds of algorithms and designs four different controllers. The improvement of sliding mode control (SMC) method restrains its tremble obviously. Simplifying the auto-disturbances-rejection control(ADRC) algorithm and combining it with fuzzy control method brings convenient for parameter tuning and actual operation.This paper utilizes Matlab to construct a simulation model using id=0current control method, which is applied in double closed-loop system of PMSM, and does some simulation tests about PMSM. The simulations verity that, compared with traditional PI, the systems based on two kinds of advanced control strategies proposed in this paper not only have wider speed, better dynamics and satisfactory performance, but also have stronger robustness and excellent anti-interference. Therefore, they have the practical value.To sum up, the speed control systems of PMSM based on two kinds of advanced control strategies which is proposed in this paper are feasible and effective.