三角形接法的异步电机模拟风力机控制  

Wind turbine imitation control of delta-connected asynchronous machine

作　　者：朱瑛[1] 桑建斌 ZHU Ying;SANG Jian-bin(College of Energy and Electrical Engineering,Hohai University,Nanjing 211100,China;Nanjing Guodian Nanzi Grid Automation Co.Ltd.,Nanjing 211100,China)

机构地区：[1]河海大学能源与电气学院,南京211100 [2]南京国电南自电网自动化有限公司,南京211100

出　　处：《电机与控制学报》2018年第12期99-106,共8页Electric Machines and Control

基　　金：国家自然科学基金(51507050);江苏省自然科学基金(BK20150822);中央高校基本科研业务费专项基金(2018B15314)

摘　　要：针对绕组三角形连接的异步电机提出了风力机模拟控制策略,将异步电机连接减速齿轮箱模拟风力机,并使其与新型双转子风力发电机相连,配合实现了双转子电机的最大功率跟踪控制。由于目前文献中对异步电机采用空间矢量脉宽调制(SVPWM)时默认其绕组为星形连接,而星形连接和三角形连接时调制算法并不一样,因此对三角形连接的异步电机推导了其SVPWM调制算法。为了验证提出的风力机模拟控制策略的有效性,搭建了风力机模拟实验平台,实验结果表明了在风速随机快速变化时风力机模拟效果良好,且与之相连的新型双转子风力发电机能实现最大功率跟踪控制策略,故满足了实验室验证风电控制策略的要求。The wind turbine imitation control strategy was proposed aiming at the Delta-connected asynchronous machine.The asynchronous machine with a reduction gearbox was adopted to imitate the wind turbine,then the novel dual-rotor generator was connected and controlled to realize the maximum power point tracking(MPPT).The existing literature which defaults the windings of tlie asynchronous machine are star-connected when the space vector pulse wide modulation(SVPWM)strategy is adopted.However,the modulation algorithm of the SVPWM is different when windings with the star-connected and the delta-connected.Thus,the algoritlim of the SVPWM for the asynchronous machine witli the delta-connected windings is deducted.The experimental platform was built to verify the effectivenes of the proposed wind turbine imitation control.The experimental results showthat the wind turbine imitation has a good Cect even when the wind speed varies quickly and randomly.Besides,the connected dual-rotor generator can realize the MPPT control which indicates that the proposed wind turbine imitation control can meet the requirements of the laboratory for the wind control strategies verification.

关 键 词：异步电机 矢量控制 风力机模拟 三角形连接 双转子电机 

分 类 号：TM343[电气工程—电机]