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Direct Torque Control System of Induction Machine Based on Speed Adaptive Flux Observer
Author(s): 
Pages: 25-29
Year: Issue:  4
Journal: TRANSACTIONS OF CHINA ELECTROTECHNICAL SOCIETY

Keyword:  感应电机直接转矩控制自适应系统;
Abstract: 提出了一种速度自适应的定子磁链闭环观测器,并应用于直接转矩控制系统中,以取代传统的纯积分器.经过理论证明,该系统是超稳定系统.针对1.1kW感应电机,采用数字信号处理器DSP(TMS320C32)进行了数字化实现.仿真与实验表明,该方案对电机参数变化的鲁棒性较好,磁链观测精度高.同时,基于磁链状态观测器设计的速度辨识方案收敛速度快,精度高,尤其是在较低转速下仍能保持很高的精度.
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