Dissertation > Industrial Technology > Electrotechnical > Motor > AC motor > Synchronous motor

Research and Design on PMSM Vector Control System Based on Sliding Mode Observer

Author HanJie
Tutor ZhangHuaGuang
School Northeastern University
Course Control Theory and Control Engineering
Keywords Permanent magnet synchronous motors Vector control Sliding Mode Observer Hardware Design Software Design
Type Master's thesis
Year 2009
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Synchronous motor , permanent magnet synchronous motor inertia ratio for its high efficiency , high torque , high energy density , and many other advantages as permanent magnetic materials in recent years , the rapid development of control technology , in the development and application of electrical transmission more and more attention . Sensorless control of permanent magnet synchronous motor technology to become one of the research focus in the field of motor control technology currently , in order to reduce the cost and increase the reliability of the system , but rather small domestic electrical transmission system in the large and medium-sized power permanent magnet synchronous motor . Based on these issues in the context of the national 863 , this article was based on sliding mode observer for permanent magnet synchronous motor vector control research and design , the main contents of this paper are as follows : First, a large number of domestic and foreign literature reading on the basis of the establishment of a permanent magnet synchronous motor model in different coordinate systems , and analysis of various control strategies for permanent magnet synchronous motor , and combined with the actual identification of the control strategy , analysis and Implementation of SVPWM . On the basis of in-depth research and analysis of sliding mode observer principle , the design of the sliding mode observer , conditions in the the simply motor stator voltage and phase current estimates of the rotor position and speed of the adaptive estimates. Secondly , in accordance with the requirements of the control system hardware and software design , further research to achieve the basic functions . Hardware design , component selection and circuit design , such as the choice of processor , sensor selection , the DSP TMS320F2812 as the core minimum system circuit detection circuit protection circuit , driver circuit ; while using modular programming ideas software design, such as the interrupt routine , SVPWM procedures , sliding mode observer program , fault detection and handling procedures , communication procedures , M / T method velocimetry procedures , temperature drift , self-correcting program , change the cutoff frequency of the digital filter , improved PI controller program , voltage hysteresis detection program , the actual debug and verify real-time and reliability of hardware and software . Finally, the theoretical analysis based on MATLAB / Simulink simulation and the actual system debugging, simulation and experimental results verify that the implemented control system to achieve the desired effect .

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