Start and stop control method for yaw control system of wind generating set
A wind turbine, yaw control technology, applied in the control of wind turbines, wind turbines, engine control and other directions, can solve the problems of large mechanical structure impact, hydraulic brake pad wear, large yaw noise, etc., and achieve mechanical structure impact. Small, reduce mechanical impact, small effect of yaw noise
Pending Publication Date: 2021-01-22
重庆华昭电气设备有限公司
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[0003] In view of the above problems, the present invention provides a start-stop control method for the yaw control system of a wind power generating set, which adopts the mode of motor brake cooperation, which can solve the problems of large impact on the mechanical structure, wear of hydraulic brake pads, and eccentricity when the traditional yaw system is started and stopped. It can also solve the problem of "vacuum period" in the start-stop process of the new electromagnetic damping yaw control system
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[0024] The present invention will be further described in detail below in conjunction with the accompanying drawings. In the description of the present invention, it should be understood that the orientations or positional relationships indicated by orientation words such as "up, down, front, back, left, right" and "top, bottom" etc. are usually based on those shown in the accompanying drawings. Orientation or positional relationship is only for the convenience of describing the present invention and simplifying the description. In the absence of a contrary statement, these orientation words do not indicate and imply that the device or element referred to must have a specific orientation or be configured in a specific orientation. and operation, so it should not be construed as limiting the protection scope of the present invention; the orientation words "inner and outer" refer to the inner and outer relative to the outline of each component itself.
[0025] In order to solve ...
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The invention relates to the technical field of wind power generation, and particularly relates to a start and stop control method for a yaw control system of a wind generating set. The start and stopcontrol method comprises a start control method and a stop control method. The start control method comprises the following steps of: S1, firstly, releasing electromagnetic brakes of yaw motors; S2,controlling the yaw motors to start at a relatively low rotating speed by a yaw frequency converter; S3, after gap elimination is completed, controlling the yaw motors to be in a zero-speed holding state by the yaw frequency converter, and continuously providing electromagnetic holding force; S4, fully releasing hydraulic brakes of a yaw system; S5, starting all the yaw motors in an accelerated manner according to a set acceleration curve; T1, stopping all the yaw motors in a decelerated manner according to a set deceleration curve; T2, after deceleration to zero, controlling the yaw motors tobe in the zero-speed holding state by the yaw frequency converter, and continuously providing electromagnetic holding force; T3, putting the hydraulic brakes of the yaw system into operation; and T4,putting the electromagnetic brakes of the yaw motors into operation. According to the start and stop control method disclosed by the invention, mechanical impact on gear teeth and vibration of the set can be reduced.
Description
technical field [0001] The invention belongs to the technical field of wind power generation, and in particular relates to a start-stop control method for a yaw control system of a wind power generating set. Background technique [0002] In the prior art, the control methods involving yaw start and stop include direct release and input of traditional hydraulic brakes, optimization of motor start and stop curves, and application of damping holding torque. This system cannot adapt to strong wind disturbance when starting and stopping, and there is an impact on the mechanical structure. Large, hydraulic brake pad wear, yaw noise and other problems, the patent application number CN201910423933.4 discloses a wind turbine yaw start and stop control method, including: obtaining information on yaw start or yaw stop; making yaw The speed-time image of the motor accelerates to the rated speed according to the acceleration S-curve or decelerates to zero according to the deceleration S-...
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IPC IPC(8): F03D7/02F03D7/04
CPCF03D7/022F03D7/026F03D7/0244F03D7/0264F03D7/042F05B2270/329Y02E10/72
Inventor 谢敬朗赵胜武黄学静刘海林张成万孙培云
Owner 重庆华昭电气设备有限公司