改进电压模型的异步电机无速度传感器矢量控制  

Speed Sensorless Vector Control of Induction Motor Based on Improved Voltage Model

作　　者：姜宏丽[1] 宗伟[1] 刘其辉[1] 齐桓若 

机构地区：[1]华北电力大学新能源电力系统国家重点实验室,北京102206

出　　处：《电气传动》2015年第2期8-12,共5页Electric Drive

摘　　要：无速度传感器矢量控制技术能够有效提高交流传动系统的可靠性,降低系统成本。该技术的核心问题是准确获取电机转子转速,并将其反馈到速度闭环控制环节。介绍一种采用改进模型参考自适应转速估计方法的异步电机矢量控制系统,克服了一般电压模型低速观测不准确的缺点。另外,为了消除外界干扰的影响,对模型做了抗噪声处理。利用PSCAD进行系统仿真,仿真结果表明该方法具有较好的低速控制效果和较强的鲁棒性。Speed sensorless vector control technology can effectively improve the reliability of AC drive systemand reduce cost of the system. Core of the technology is how to obtain the speed of the rotor accurately,and feed it backto the speed closed-loop control. An improved referenced self-adapting speed estimation method of the vector-controlledinduction motor drives was introduced. The shortcoming of general voltage model′s inaccurate observation at low speedwas overcome. In addition,in order to eliminate the influence of interference,anti-noise processing was carried out forthe model. The system simulation by using PSCAD shows that the method has well control effect at low speed and hasstrong robustness.

关 键 词：异步电机 无速度传感器 矢量控制 磁链观测模型 改进模型参考自适应方法 

分 类 号：TM346[电气工程—电机]