基于无功功率交流异步电机转速估算研究.pdf

ELECTRIC DRIVE 2016 Vol.46 No.3 电气传动 2016 年 第46 卷 第3 期 基于无功功率的交流异步电机转速估算研究 吴志鸿，薛重德，尚广利 （南京航空航天大学 机电学院，江苏 南京210016） 摘要：研究基于模型参考自适应的交流异步电机无速度传感器矢量控制系统的转速估计，提出以电机瞬 时无功功率为模型的转速估计方法，消除定子电阻项和积分项，并根据Popov 超稳定理论证明系统的稳定 性。在以TMS320F2812DSP 为控制核心的平台上进行实验。实验结果表明，所提模型的估计转速和实际转速 在低速、中速、高速下都具有较好的动态性能和响应性能，模型具有较好的跟踪性能和稳定性。 关键词：交流异步电机；无功功率；Popov 超稳定理论；模型参考自适应；无速度传感器 中图分类号：TM921 文献标识码：A Speed Estimation Research of Asynchronous Motor Based on Reactive Power WU Zhihong ，XUE Zhongde ，SHANG Guangli （College of Mechanical and Electrical Engineering，Nanjing University of Aeronautics and Astronautics ，Nanjing 210016，Jiangsu ，China） Abstract: Studied the speed estimation of speed sensor-less vector control system of AC asynchronous motor based on MRAS ，and then put forward a kind of speed estimation model by using the reactive power of the motor， which eliminated the stator resistance and integral term ，at the meantime，proved the stability of the system by Popov′s hyperstability theory. Experiments on the digital platform based on TMS320F2812 DSP were conducted. The simulation and experiment results all show that the estimate speed and actual speed possesses good dynamic performance and response performance under low speed ，medium speed and high speed，and that the reactive power model has good tracking performance and stability. Key words: AC asynchronous motor ；reactive power ；Popov′s hyperstability theory ；model reference adaptive system（MRAS）；speed sensor-less ［3-4］ 随着工业的发展，交流异步电机在工业的使 目前，无速度传感