摘要
针对传统无刷双馈电机转子耦合能力差、谐波含量高,导致电机功率密度偏低的问题,提出一种磁场“差调制”条件下运行的无刷双馈发电机转子绕组的通用设计方法。介绍了磁场“差调制”和“和调制”两种无刷双馈电机的工作原理,给出了磁场“差调制”无刷双馈电机转子绕组的设计实例,与6联等匝转子绕组的性能进行了对比,并以1/5对极无刷双馈发电机为例,采用有限元法对电机运行在空载和负载状态下的性能进行了分析,在保持定子侧完全相同的情况下,与转子绕组采用6联等匝的无刷双馈电机在低于自然同步速(600 r/min)和高于自然同步速(900 r/min)两种状态下进行了对比,结果表明采用磁场“差调制”无刷双馈电机转子绕组设计的电机谐波含量低、转子耦合能力强,具有良好的性能指标。
A general design method for the rotor winding of a brushless doubly-fed machine operating under“differential modulation”of the magnetic field is proposed.The operating principles of both“differentially modulated”and“sum modulated”brushless doubly-fed machines were presented,and an example of the design of the rotor winding of a brushless doubly-fed machine with a“differentially modulated”magnetic field was given.The performance was compared.Taking the 1/5-pole brushless doubly-fed machine as an example,the finite element method was used to analyze the performance of the machine under no-load and load conditions,while keeping the stator side exactly the same,compared with the brushless doubly-fed machine whose rotor winding adopts 6 equal turns in two states lower than the natural synchronous speed(600 r/min)and higher than the natural synchronous speed(900 r/min).The results show that the design of the rotor winding of the brushless doubly-fed machine with“differential modulation”of the magnetic field has a low harmonic content,a high rotor coupling capacity and good performance indicators.
作者
任泰安
梁克靖
王群京
阚超豪
李响
REN Tai-an;LIANG Ke-jing;WANG Qun-jing;KAN Chao-hao;LI Xiang(Undergraduate School,Hefei University of Technology,Hefei 230009,China;Key Laboratory of Control of Power Transmission and Conversion(SJTU),Ministry of Education,Shanghai Jiao Tong University,Shanghai 200240,China;School of Electrical Engineering and Automation,Anhui University,Hefei 230601,China;School of Electrical Engineering and Automation,Hefei University of Technology,Hefei 230009,China)
出处
《电机与控制学报》
EI
CSCD
北大核心
2022年第4期57-65,共9页
Electric Machines and Control
基金
国家自然科学基金(51377040)
电力传输与功率变换控制教育部重点实验室开放课题(2020AC03)
中央高校基本科研业务费专项资金(JZ2021HGTA0157,JZ2020HGQA0174)
安徽省工业节电与用电安全重点实验室开放课题(KFKT201905)
关键词
无刷双馈发电机
转子绕组
差调制
低谐波
有限元
brushless doubly-fed machines
rotor winding
differential modulation
low harmonic
finite element
