摘  要：介绍了一种基于MW级直驱永磁同步风力发电机的变流器的设计方案，并且采用模块并联以及多重化技术，降低各模块容量的同时，有效地减小了发电机和并网电流中的谐波含量，提高了系统的稳定性和电能质量。给出了实验结果，验证了控制算法的有效性。
关键词：永磁同步风力发电机；变流器；多重化；实验

Abstract:This paper presented a design scheme for MW direct-driven permanent magnet synchronous generators(PMSG).Through modular paralleling and multiple superposition technology,the harmonic in the generators and the output current was reduced and the power quality was improved.The detailed topological structure and control algorithm principle were introduced.The experiment results were also presented in the end.
Key Words: PMSG;Paralleling inverter；Multiple superposition technology；Experiment