Abstract：A novel speed adaptive flux observer (SAFO) is proposed in this paper, which employs a simplified method for observer gain selection and improves the stability of observer. Furthermore, the dynamic performance of speed estimation is improved by introducing the load torque observer. Fuzzy logic controllers (FLC) are used for rotor speed and flux control in the outer loop of field oriented control, which exhibits more excellent performance than that of conventional PI controller. Experimental results obtain from a three-level inverter platform prove that the sensorless control system using FLC and SAFO has excellent performance over a wide speed range.
张永昌, 赵争鸣. 基于自适应观测器的异步电机无速度传感器模糊矢量控制[J]. 电工技术学报, 2010, 25(3): 40-47.
Zhang Yongchang, Zhao Zhengming. Speed Sensorless Fuzzy Vector Control of Induction Motor Using an Adaptive Observer. Transactions of China Electrotechnical Society, 2010, 25(3): 40-47.
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2010, Vol. 25 
