Speed Control of Permanent Magnet Synchronous Motor with  Flexible Coupling Using Load Torque Observer

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Riahi, Mohammad Reza | 2015

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Type of Document: M.Sc. Thesis
Language: Farsi
Document No: 47348 (05)
University: Sharif University of Technology
Department: Electrical Engineering
Advisor(s): Tahami, Farzad
Abstract:
Elastic joints in 2-mass drive systems, because of their limited stiffness, can decrease the performance of the control system and lead to motor and load speed oscillation. Shaft torque ignoring can also stress both mechanical and electrical drive components. Because of low degree of freedom, conventional controllers, such as the PI controllers, cannot improve the performance of the system and keep the system stable at the same time. In this thesis, the dynamic response and stability of the 2-mass systems is improved using state controller. State estimation of 2-mass system is required for state space controller . In the thesis, different state observer is analyzed and compared with each other and finally a modified Leunburger observer is proposed. This observer is capable to reject the noise and disturbance properly and can be used for state estimation in state feedback control structure. The proposed control configuration is verified by simulation and experimental results
Keywords:
Electrical Machines Control ; Two Mass Systrm ; State Observer ; Permanent Magnet Synchronous Machine

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