无刷双馈电机稳定性分析及其影响因素探讨  

Stability analysis and its influence factors study of brushless doubly-fed machine

作　　者：韩力[1] 罗杰[1,2] 李景灿[1] 潘红广[1,3] 

机构地区：[1]重庆大学输配电装备及系统安全与新技术国家重点实验室,重庆400044 [2]湖南省电力公司湘潭电业局,湖南湘潭411104 [3]重庆市电力公司永川供电局,重庆402160

出　　处：《电机与控制学报》2013年第7期105-112,共8页Electric Machines and Control

基　　金：中央高校基本科研业务费科研专项自然科学类项目(CDJZR12150022)

摘　　要：无刷双馈电机(BDFM)的运行稳定性是影响其推广应用的关键问题之一。通过建立其小信号模型,利用Lyapunov判据,对笼型转子BDFM的稳定性进行了研究。分析并给出了控制绕组恒压频比开环控制策略,进而提出了一种带交叉补偿量的改进控制绕组电流闭环控制策略。在此基础上,探讨了不同控制策略、转速、负载转矩、转动惯量、控制绕组压频比等多种因素对笼型转子BDFM稳定性的影响,并通过Matlab仿真验证了小信号模型的分析结果。结果表明,提出的稳定性分析方法和仿真模型是正确的,改进的控制绕组电流闭环控制策略优于控制绕组恒压频比开环控制策略。One of the key factors influencing the applications of brushless doubly-fed machine （BDFM） is its operating stability. The stability of the BDFM with cage rotor was studied by building up its small sig- nal model and using the Lyapunov criterion. The open-loop control strategy with constant ratio of control winding voltage to frequency was analyzed and given. And then, an improved closed-loop control strategy of control winding current with the cross-compensatory quantity was proposed. Furthermore, the influ- ences of different factors on the stability of the BDFM with cage rotor were discussed, such as the control strategy, the speed, the load torque, the moment of inertia and the ratio of control winding voltage to fre- quency. The analysis results of the small signal model were verified by the Matlab simulation. The results show that the proposed method of stability analysis and the simulation model are correct, and the im- proved closed-loop control strategy of control winding current is superior to the open-loop control strategy with the constant ratio of control winding voltage to frequency.

关 键 词：无刷双馈电机 稳定性分析 小信号模型 LYAPUNOV方法 仿真 

分 类 号：TM301.2[电气工程—电机] TM344.4