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System and Method for Improving Speed Control of a Pitch Drive System of a Wind Turbine
System and Method for Improving Speed Control of a Pitch Drive System of a Wind Turbine
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机译:改善风力发电机变桨驱动系统速度控制的系统和方法
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摘要
The present subject matter is directed to a system and method for improving speed control of a pitch drive system of a wind turbine. In one embodiment, the pitch drive system includes a direct current (DC) motor having an armature and a series-field winding, a battery assembly having a positive terminal and a negative terminal, and a current-controlling device configured in series between the positive terminal of the battery assembly and the series-field winding. The battery assembly is configured to supply power to the pitch drive system and the current-controlling device is configured to supply current to the series-field winding so as to ensure a field flux does not equal zero. Thus, the current-controlling device has the effect of limiting the maximum speed of the DC motor.
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