直驱永磁风力发电机全功率变流器冷却系统远程控制技术探讨

Discussion on Remote Control Technology of Full Power Converter Cooling System for Direct-Drive Permanent-Magnet Wind Turbine Generator

直驱永磁风力发电机组全功率变流器冷却系统工作性能直接影响着变流系统运行的可靠性,笔者通过对风力发电机组全功率变流器冷却系统控制策略的阐述,提出低温大风环境下风力发电机组全功率变流器远程遥控单步操作预热控制模式,为有效提高变流器循环预热效果、降低风力发电机组低温大风阶段的预热弃风电量、完善风电场低温大风阶段变流器预热控制模式提供参考。

The working performance of full power converter cooling system of direct-drive permanent-magnet wind turbine generator set directly affects the reliability of the converter system. Through explaining the control strategy of the full power converter cooling system of the wind turbine generator set, the author puts forward the remote telecommand control single-step operation preheating control mode of the full power converter of the wind turbine in low temperature and strong wind environment. It provides a reference for effectively improving the effect of converter cycle preheating, reducing the amount of preheating and discarding wind power in the low-temperature and high-wind stage of wind turbine, and improving the preheating control mode of converter in the low-temperature and high-wind stage of wind farm.