级联式无刷双馈电机的矢量控制系统和功率流研究  

Study on Vector Control System and Power Flow of Cascaded Brushless Doubly-Fed Induction Generator

作　　者：程明[1] 许利通 曹政 魏新迟 宁新福 Cheng Ming;Xu Litong;Cao Zheng;Wei Xinchi;Ning Xinfu(School of Electrical Engineering Southeast University,Nanjing 210096 China;Hangzhou Power Supply Company State Grid Zhejiang Electric Power Co.Ltd,Hangzhou 310016 China;State Grid Shanghai Electrical Power Research Institute,Shanghai 200437 China;Jiaxing Power Supply Company State Grid Zhejiang Electric Power Co.Ltd,Jiaxing 314001 China)

机构地区：[1]东南大学电气工程学院,南京210096 [2]国网浙江省电力有限公司杭州供电公司,杭州310016 [3]国网上海电科院,上海200437 [4]国网浙江省电力有限公司嘉兴供电公司,嘉兴314001

出　　处：《电工技术学报》2022年第20期5164-5174,共11页Transactions of China Electrotechnical Society

基　　金：国家自然科学基金资助项目(61973073)。

摘　　要：该文主要研究了级联式无刷双馈电机的矢量控制以及功率流。首先建立了其动态和稳态模型,对网侧变换器使用电网电压定向矢量控制,对机侧变换器使用定子磁链定向矢量控制,以实现无刷双馈电机的变速恒频运行以及有功与无功功率的解耦控制。同时背靠背变换器的矢量控制可实现功率的双向流动。然后进行了功率流分析,探究了其有功功率分配和不同转速下功率绕组和控制绕组的功率状态,揭示了考虑铜耗下控制侧功率流的变化趋势。通过仿真和实验,验证了矢量控制的有效性以及功率流分析的正确性。The vector control and power flow of the cascaded brushless doubly-fed induction generator(CBDFIG)are studied in this paper.Firstly,the dynamic model and steady-state equation are established.The grid-side converter is controlled by the grid voltage-oriented vector control and the machine-side converter is controlled by the stator flux-oriented vector control to realize the variablespeed constant-frequency operation of CBDFIG and the decoupling control of active and reactive power.Meanwhile,the vector control of the back-to-back converter can realize the bidirectional flow of power.Then,the power flow analysis is carried out.The active power distribution and the power state of power winding and control winding at different speeds are explored,and the changing trend of the power flow on the control side is revealed under consideration of copper loss.Through simulation and experiment,the effectiveness of the vector control and the correctness of the power flow analysis are verified.

关 键 词：级联式无刷双馈电机 矢量控制 网侧变换器 机侧变换器 功率流 

分 类 号：TM315[电气工程—电机]