中文摘要：

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。

英文摘要：

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.