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《Transactions of China Electrotechnical Society》 2009-12
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Suppressing Speed Ripples of Permanent Magnetic Synchronous Motor Based on a Method

Chu Jianbo Hu Yuwen Huang Wenxin Yang Jianfei (Nanjing University of Aeronautics and Astronautics Nanjing 210016 China)  
For a common permanent magnetic synchronous motor(PMSM) single rotor compressor system,cyclical fluctuation of the load torque also causes the ripples of speed at the same cycle.The vibration of the system framework,high noise et al.phenomenon caused by the ripple speed is particularly evident when compressor running at low speed.And the efficiency of the system comes down at the same time.After analysis the impact on the system stability of such periodic speed disturbances in detail,a new method aiming to suppress the pulsation of the speed caused by periodic torque disturbance is proposed in this paper.A composite controller consisting of PI controller and repetitive controller which are paralleled together is placed in the speed loop.The PI controller and repetitive controller are used together in the steady-state for better performance of the steady-state,and PI controller is left alone to obtain good dynamic response when non-periodic disturbance appears.Simulation and experimental results show the feasibility and validity of the control program.
【Fund】: 国家自然科学基金资助项目(50977045)
【CateGory Index】: TM341
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