Abstract
Permanent magnet synchronous motors (PMSM) are mainly used in high-performance and high-efficiency motor drives such as used in railways. PMSM has the performance required for traction motors and is more compact, light weighted and efficient than induction motors. This paper presents the detailed modeling of PMSM drive in Simulink environment and also presents the speed control of PMSM using vector control approach and by use of state feedback (SFB) controller. The observer is designed to eliminate the need of sensors. The observer is designed for estimating any one of the state variable if the other state variable is known thus eliminating the need to sense both speed and current. The state feedback (SFB) controller is designed such to provide zero steady state error. For observation purpose a PI controller is also designed and the results of control actions have been compared and observed that SFB controller are more robust than PI controllers bpth in case of normal and over loading. In this paper, we have designed and simulated the mathematical model of PM synchronous motor and designed the state feedback control system using pole placement method and PI controller using bode plot method, for speed control of PMSM. The controller hence designed is found to be satisfactory and robust over wide range of operating condition and parameter variations.
Published Version
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