无刷双馈风力发电机空载试验问题探讨

Study on no load test of brushless doubly-fed wind generator

针对无刷双馈变速恒频风力发电系统空载特性试验中出现的电机转速突增、突减甚至快速停机,以及与双馈发电机控制绕组相联的变频器滤波电容奇异击穿甚至爆炸等一些在普通电机中非常少见的特殊现象和问题,从交流电机的基本理论出发,阐述了无刷双馈风力发电机的变速恒频原理、空载特性试验的测量方法,分析了此类问题与现象存在的根源,给出了若干建议和注意事项。

Special problems and phenomenon of brushless doubly- fed wind generator were found in tests, such as the rotation speed of generator varying quickly - faster, slower even stop, the wave filter capacitance linking with the control winding of generator puncturing even exploding. With the fundamental axiom of electrical machine, theory of variable - speed constant frequency and no load test measuring method of brushless doubly - fed wind generator were introduced, and the source of these problems and phenomenon was analyzed. Some points for attention and proposal were put forward.