摘要：针对不具备低电压穿越的WD750定速风电机组，提出了采用全功率背靠背变流器的技术控制：机侧变流器稳定定子电压，网侧变流器稳定直流母线电压且对有功和无功解耦控制，使其具备了低电压穿越功能；有效降低电机起动过程中的励磁电流冲击，且机组可以实现无功补偿。在Matlab/Simulink中建立了750 kW风电机组仿真模型，并对整改后的机组进行了现场测试验证。
关键词：定速风电机组；低电压穿越；全功率变流器；现场测试
Abstract: For WD750 fixed speed wind turbines which do not have Low Voltage Ride Through (LVRT) the ability in Shandong, technical research of the full power back to back converter was proposed: machine side converter was used to stabilize stator voltage, and gridside converter can stabilize DC bus voltage and realize decoupling control of active and reactive power. It has the LVRT function, and reduce excitation current impacting during startup, and the wind turbine can achieve reactive power compensation. The 750 kW wind turbine simulation model based on Matlab / Simulink was built ,and field tests were creeied out to verify after low voltage ride through Renovation.
Key words: fixed speed wind turbines; low voltage ride through ; full power converter; field tests