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Research of Sensorless Control for PMSM Based on SMO

Author: ZhuZhiWei
Tutor: YangZhenQiang
School: Dalian University of Technology
Course: Motor and electrical
Keywords: permanent magnet synchronous motor vector control system sliding-mode observer SVPWM
CLC: TM341
Type: Master's thesis
Year: 2010
Downloads: 212
Quote: 0
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Abstract


In recent years, the fast development of modern power electronic technology, microelectronic technology and the theory of modern control has unceasingly promoted the permanent magnetism synchronous motor sensorless control technology. The non-sensor permanent magnetism synchronous motor velocity modulation system is not only simple in structure, easy to maintain, highly efficient to operate, excellent in velocity modulation performance, but also small in volume, low in cost, high in reliability and it can be applied in some special occasions. This research uses the non-sensor algorithm of sliding-mode observer to estimate the position of electrical machinery’s rotor, studies and developes the non-sensor vector control system of the permanent magnetism synchronous machine.This article elaborates the principle of vector control technology and the control theory of sliding model variable structure. Based on the mathematical model analysis of the permanent magnetism synchronous machine, this article selects the vector control strategy of id=0 to actuate permanent magnetism synchronous machine.This paper gives the detailed process of establishing on non-sensor control algorithm of the sliding-mode observer and carries on the simulation analysis on the Matlab/Sumiulink software platform. Results show that the estimation of the rotor angle by the sliding-mode observer is accurate and verifies its scientificity and feasibility. Finally, the article gives the hardware circuit and software flow chart designed by the system. The hardware of this article adopts TMS320LF2808DSP chip as control core, IPM as driving module and uses SVPWM technology to investigate. In terms of the software, this essay gives flowcharts of the sliding mode control module, SVPWM module and other main modules, introduces the flow of interruption and the overall process of the permanent magnet synchronous motor vector control system.At the end of the project, analysis and evaluation on performance of the system are made according to the simulation wave. After debugging, the control system successfully implements the vector control algorithm of the motor non-sensor with good torque and speed, high precision, stable operation and basically reaches the desired effect of this topic.

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CLC: > Industrial Technology > Electrotechnical > Motor > AC motor > Synchronous motor
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