Abstract：An electromotive force(EMF) based rotor position observer using a quadrature phase- locked loop(PLL) is proposed to improve the performance of the sensorless interior permanent magnet synchronous motor(IPMSM) drive. A sliding mode observer based on extended EMF model is designed. On this basis, the position information is obtained using the software quadrature PLL with the estimated EMF. The noise influence can be eliminated, and the observer parameter selection can be simplified. The dynamic response and the robustness to load disturbance is analyzed. The parameter of the position observer is designed adopting the pole assignment method. The negative effect on the position observer due to the stator current distortion is analyzed. A dead-time compensation method based on a saturation function is adopted to reduce the position estimation error. The experimental results demonstrate the feasibility of the sensorless control strategy by an IPMSM vector controlled system.
王高林, 李卓敏, 詹瀚林, 李铁链, 李刚, 徐殿国. 考虑逆变器非线性的内置式永磁同步电机转子位置锁相环观测器[J]. 电工技术学报, 2014, 29(3): 172-179.
Wang Gaolin, Li Zhuomin, Zhan Hanlin, Li Tielian, Li Gang, Xu Dianguo. Phase-Locked-Loop Rotor Position Observer for IPMSM Considering Inverter Nonlinearity. Transactions of China Electrotechnical Society, 2014, 29(3): 172-179.
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2014, Vol. 29 
