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  

Speed Sensorless Fuzzy Vector Control of Induction Motor Using an Adaptive Observer

作　　者：张永昌[1] 赵争鸣[1] 

机构地区：[1]清华大学电机系电力系统国家重点实验室,北京100084

出　　处：《电工技术学报》2010年第3期40-47,共8页Transactions of China Electrotechnical Society

基　　金：国家自然科学基金重点资助项目(50737002)

摘　　要：提出了一种新型的转速自适应磁链观测器,深入研究了观测器的增益矩阵选择,并提出了一种简化的增益矩阵选择方法,同时使观测器的稳定性得到改善。在观测器中进一步引入转矩观测器,提高了速度估计的动态性能。转速和磁链外环采用模糊控制,与传统PI控制器相比,系统的动静态性能得到提高。在实际三电平逆变器平台上的实验结果表明,采用模糊控制和自适应观测器的无速度传感器矢量控制系统在较宽的速度范围内具有良好的性能。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.

关 键 词：自适应观测器 模糊逻辑 无速度传感器 矢量控制 

分 类 号：TM343[电气工程—电机] TM921