风力发电机、变流器及其低电压穿越概述

风力发电技术发展很快，单机容量不断增大，风电在电网中所占的比重也越来越大。讨论了几种典型的风力发电系统，包括失速型风电系统、双馈和直驱型变速恒频风电系统，并在此基础上，根据齿轮箱结构和发电机不同，讨论了其他类型的风电系统，分析了各自的优缺点。说明了常用的风电变流器拓扑，多电平变流器将得到更多的应用；为适应新的电阚规则对并网风电低电压穿趣与无功支持功能的要求，风电机组必须采取应对措施，对相关技术进行了分析和讨论。从风电系统发电机、变流器和低电压穿越能力等方面进行了论述，并介绍了不同风电公司的相关产品与技术。

Overview of Wind Power Generator,Converter and Low Voltage Ride Through Capability

The development of wind power technology is rapid,and the single wind turbine capacity and the share of wind power in power grid are increasing.Several typical wind power system is discussed,including stall wind power system,doubly-fed induction generator (DFIG)and direct-driven variable-speed constant frequency wind power system;then other wind power systems are discussed based on different gearbox configuration and generator, and the advantages and disadvantages of each scheme are analyzed.The common wind...