无刷双馈电机的双馈与异步起动控制策略  

Doubly Fed and Asynchronous Starting Control Strategies of Brushless Doubly Fed Machine

作　　者：李珍平 王雪帆[1] 陈曦[1] 孔铭 Li Zhenping;Wang Xuefan;Chen Xi;Kong Ming(State Key Laboratory of Advanced Electromagnetic Engineering and TechnologyHuazhong University of Science and Technology,Wuhan 430074 China;EAST Group Co.Ltd,Dongguan 523808 China)

机构地区：[1]强电磁工程与新技术国家重点实验室(华中科技大学),武汉430074 [2]易事特集团股份有限公司,东莞523808

出　　处：《电工技术学报》2022年第14期3576-3586,共11页Transactions of China Electrotechnical Society

基　　金：国家自然科学基金资助项目(52007070)。

摘　　要：无刷双馈电机是一种定子励磁的双电气端口电机,与常规的异步电机、同步电机相比,具有多个自由度,运行方式灵活。在电机系统起动时,两套电源需要先后投入使用。为了避免施加激励时产生冲击并获得理想的输出转矩,应根据电机机械特性与应用工况选择合适的起动方式。该文首先利用无刷双馈电机的数学模型对其双馈及异步运行模式下的转矩特性进行分析;然后针对这两种运行模式,分别提出了基于虚拟电阻的恒转矩异步起动控制策略与基于定子控制绕组开路电压跟踪的双馈起动控制策略;最后利用一台30kW的样机建立无刷双馈变频调速系统的实验平台,实验结果验证了所提双馈与异步起动控制策略的可行性与有效性。Brushless doubly fed machine(BDFM)is a kind of multi-port electrical machine with stator excitation,which has multiple degrees of freedom and flexible operation modes compared with the conventional asynchronous and synchronous machines.During the start-up process,dual stator windings of the BDFM are supplied with two different AC power sources successively.In order to avoid shock while obtaining the ideal output torque,the appropriate starting method should be selected according to torque characteristics and application conditions.Firstly,the torque characteristics of the BDFM under doubly fed and asynchronous modes are analyzed by the mathematical model.Then,a constant torque asynchronous starting control strategy based on virtual resistor and a doubly fed starting control strategy based on control side voltage tracking are proposed for asynchronous and doubly fed operation modes,respectively.Finally,an experimental platform based on a 30kW prototype is established,and the results verify the effectiveness and robustness of the proposed two starting control methods.

关 键 词：无刷双馈电机 虚拟电阻 异步起动 恒转矩 双馈起动 

分 类 号：TM301.2[电气工程—电机]