变桨电机的V/F控制及案例分析

V/F Control of Pitch Motor and Practical Case Analysis

介绍了大型海上风力发电机组变桨电机的V/F控制方式,根据叶片在不同工况下的载荷曲线,决定变桨电机输出转矩的范围。选择合适的V/F控制曲线及转差曲线,在满足变桨电机输出转矩要求的同时,又不能使电机的温升过高,引起电机超温。结合相关试验数据及实际应用,验证了该V/F控制方式及应用在保证变桨电机转矩输出和控制变桨电机温升方面具有良好的效果。

A control method of V/F about the wind turbine pitch motor is introduced.According to the load curve of blade under different conditions,the range of output torque of pitch motor is decided.Choosing appropriate V/F control curve and slip curve can meet the requirement of pitch motor output torque,at the same time,it cannot make the motor temperature rise too high to cause motor overheat.Related experimental data and actual application data are combined to verify that the V/F control method and its application are proved to be effective in ensuring the output torque of pitch motor and controlling the temperature rise of pitch motor.