公开(公告)号：US20150333501A1

公开(公告)日：2015-11-19

申请号：US14652874

申请日：2013-12-16

Applicant: SENVION SE.

Inventor： Jens Geisler ,  Stefan Schrader ,  Jens Fortmann

IPC: H02H7/06

CPC classification number: H02H7/067 ,  F03D7/0272 ,  F03D7/0276 ,  F03D7/0284 ,  F05B2270/10711 ,  Y02E10/723

Abstract: The invention relates to a method for controlling the electrical moment of a wind turbine by closed-loop control in the event of a grid fault. A fall in voltage that is outside the limits of normal operation is discovered. A moment closed-loop controller which determines a target value for the electrical moment of the wind turbine, is operated. A moment ramp is initialized. The target value of the moment closed-loop controller is compared with the moment ramp and the lesser value is selected as a moment setpoint value. The electrical moment of the wind turbine is set on the basis of the moment setpoint value. The invention additionally relates to a wind turbine suitable for implementing the method. The invention makes it possible, on the one hand, to achieve a rapid restoration of the power after the end of the grid fault, while, on the other hand, the loads for the wind turbine are kept within limits.

Abstract translation: 本发明涉及在电网故障的情况下通过闭环控制来控制风力涡轮机的电力矩的方法。 发现超出正常工作极限的电压下降。 确定风力涡轮机的电力矩的目标值的瞬时闭环控制器被操作。 瞬间斜坡被初始化。 将力矩闭环控制器的目标值与力矩斜坡进行比较，较小的值被选为瞬时设定值。 风力涡轮机的电力矩是基于力矩设定值设定的。 本发明还涉及适用于实施该方法的风力涡轮机。 本发明一方面可以在电网故障结束后实现电力的快速恢复，另一方面，风力涡轮机的负载保持在极限内。