The subject of this thesis is permanent-magnet direct-drive wind power generation system, it is connected with power grid by dual-PWM converter.
本文的研究对象为永磁直驱风力发电系统，与电网的连接方式为双pw M变频器。
The carrier phase shift technique based parallel back-to-back PWM converter is used on the direct-drive wind power system, with a switching frequency as low as 1 kHz.
直驱型风力发电系统需要全功率变流器，在现有器件功率水平以及开关频率等诸多因素制约下，变流器直接并联的方式具备结构简单、模块化设计、易扩展的优点。
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