双馈异步风力发电机气隙偏心故障诊断研究现状与发展

双馈异步风力发电机(DFIG)机械故障在实际运行中尤其不可忽略,不论是转子刚度不足还是轴承磨损或安装误差,都会导致气隙偏心,严重时甚至会烧毁电机,因此对风机进行准确高效的气隙偏心故障诊断至关重要。简单介绍DFIG产生气隙偏心的故障机理,再对当前已有的相关故障诊断方法做重点归类阐述,最后展望未来的DFIG气隙偏心故障诊断方法的发展趋势和方向。

Research Status and Development of Air Gap Eccentric Fault Diagnosisfor Doubly Fed Induction Generator

Doubly fed induction generator has been widely used in wind power industry. Compared with electrical failure, mechanical failure in practical engineering operation in particular can not be ignored, and are mostly associated with the air gap eccentricity, whether the rotor rigidity or insufficient bearing wear or installation error, will cause the air gap eccentricity, and even burning motor, air gap eccentric fault diagnosis of wind turbine. So it is very important accurate and efficient. This paper first introduces the failure mechanism of double fed asynchronous wind generator air gap eccentric fault diagnosis method, related to the current key classification described finally in the future, the doubly fed induction wind generator air gap eccentric fault diagnosis method of the development trend and direction.