风电机组变流器技术特点和可靠性分析

摘要

Wind turbines converter is one of the core components of wind turbine and the key equipment to realize the energy conversion .Its reliability determines the reliability of wind turbines running .Due to the special running environment of the wind turbines ,wind turbines power converter has its own characteristics in industry application .Around issues of the reliability of power converter ,starting from the working fea-tures and technology requirements of converter ,the paper analyzes the main reasons of the converter fail-ure ,and expounds the failure mechanism of power devices during work .Some measures for improving the reliability of the converter have been proposed in it .%风电机组变流器是风力发电机组核心部件之一，是实现能量转换的关键设备，其可靠性决定了风电机组运行的可靠性。由于风电机组运行环境特殊，因此，风电机组的功率变流器有其自身的行业应用特点。围绕功率变流器的可靠性问题，从变流器的工作特点及技术要求出发，分析了变流器故障主要原因，阐述了功率器件在工作中的失效机理，提出了提高变流器可靠性的措施。