SYSTEM AND METHOD FOR PREVENTING PITCH BEARING FAULT IN A WIND TURBINE USING PITCH MOTOR SIGNAL

A method for preventing failure of a pitch bearing of a pitch system of a wind turbine includes monitoring, via at least one sensor, one or more electrical signals of a pitch motor of a pitch drive mechanism of the pitch system, the pitch motor driving the pitch bearing of the pitch system. The method further includes analyzing, via the controller, the one or more electrical signals of the pitch motor to remove noise and amplify the outlier. Further, the method includes estimating bearing friction of the pitch bearing using the analyzed one or more electrical signals of the pitch motor. As such, the method includes performing, via a controller, a control action when the estimated bearing friction of the pitch bearing indicates an anomaly in the pitch bearing. 一种用于防止风力涡轮的变桨系统的变桨轴承故障的方法包括经由至少一个传感器监测变桨系统的变桨驱动机构的变桨马达的一个或多个电信号，该变桨马达驱动变桨系统的变桨轴承。该方法还包括经由控制器分析变桨马达的一个或多个电信号以便去除噪声并放大异常值。此外，该方法包括使用变桨马达的经分析的一个或多个电信号来估计变桨轴承的轴承摩擦。照此，该方法包括当变桨轴承的所估计的轴承摩擦指示变桨轴承中的异常时，经由控制器实施控制动作。