基于横磁通发电机的永磁直驱风力发电系统  

Direct-driven wind turbine system with multiphase transverse flux permanent magnet generator

作　　者：包广清[1] 郑文鹏[2] 毛开富[1] 

机构地区：[1]兰州理工大学电信学院,甘肃兰州730050 [2]中国电子科技集团公司第21研究所,上海200233

出　　处：《电机与控制学报》2012年第11期39-44,共6页Electric Machines and Control

基　　金：国家自然科学基金(50877034);甘肃省科技支撑计划项目(1011JKCA173);甘肃省高校基本科研业务费资助项目(1103ZTC137)

摘　　要：为满足直驱式风力发电机组的低速、大转矩要求,对新型横磁通永磁多相发电机的转矩密度、模块化结构及其系统建模进行深入分析,针对此类电机电枢绕组和主磁路在空间结构上的相对独立性和各相绕组间的电磁解耦特点,进行变速恒频风力发电控制系统设计,根据风力机输出特性,提出基于最优电磁转矩特性曲线的发电机最大功率跟踪方案。并搭建了10kVA样机系统,通过全功率逆变器完成电能转换与并网控制,实验测试结果表明发电系统馈入电网的电流THD为2.8%,功率因数为0.98,电能质量达到了风电入网标准。The transverse flux permanent magnet generator（TFPG） has ideal characteristics in terms of modular configuration,high torque density,low velocity and brushless,which makes it applicable to direct-driven wind energy conversion systems（WECS）.Combined with the advantages of structural decoupling of the space requirement of flux carrying core iron path and the armature winding as well as the electromagnetic decoupling of the armature windings in different phases,the use of TFPG working in variable speed wind turbine system was discussed.A novel maximum power point tracking（MPPT） control scheme based on optimal electromagnetic torque reference was proposed.The generator-converter arrangement was described,the inverter switching effects were analyzed and the switching strategy was derived which is verified by the 10kVA laboratory experiment.It is proved that THD and power factor of grid side converter are 2.8% and 0.98 respectively,which meets the technical requirements for connecting WECS to power network.

关 键 词：风力发电系统 同步发电机 永磁电机 功率变换器 并网 电能测量 

分 类 号：TM341[电气工程—电机]