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Method for automatically controlling yaw damping of wind power unit

A wind turbine, yaw technology, applied in the direction of engine, wind power generation, engine control, etc., can solve the problems of yaw damping can not be automatically adjusted, high failure rate, inconvenient maintenance, etc., achieve real-time optimal system performance, avoid abnormal noise , the effect of easy maintenance

Active Publication Date: 2016-09-28
QUFU NORMAL UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] It can be seen that the traditional yaw system has defects such as high failure rate, automatic adjustment of yaw damping, and inconvenient maintenance.

Method used

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  • Method for automatically controlling yaw damping of wind power unit
  • Method for automatically controlling yaw damping of wind power unit
  • Method for automatically controlling yaw damping of wind power unit

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Embodiment Construction

[0034] Combine below Attached picture , the present invention will be described in further detail.

[0035] Such as picture 1 As shown, the magnetic suspension yaw system includes a yaw motor, a suspension bracket 3, an air gap sensor 4, and an anemometer. The yaw motor is a disc synchronous motor, which includes a rotor 1 and a stator 2. Winding, the stator 2 has a three-phase winding. The rotor 1 is fixed to the nacelle through the suspension bracket 3, that is, one end of the suspension bracket 3 is fixed to the rotor 1 with bolts, and the other end is fixed to the nacelle; the stator 2 is fixed on the tower. The air gap sensor 4 is used to detect the length of the air gap between the rotor 1 and the stator 2 .

[0036] Such as picture 2 As shown, the rotor 1 and the air gap sensor 4 are connected to the rotor controller 5 , and the stator 2 is connected to the stator controller 6 .

[0037] A method for automatically adjusting the yaw damping of a wind turbin...

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Abstract

The invention relates to a method for automatically controlling yaw damping of a wind power unit and belongs to the technical field of wind power. The method is characterized by stably controlling the yaw damping in real time by using a magnetic suspension yaw system and comprises the following steps: firstly calculating wind torque TW of wind acting on an engine room when wind direction is changed; enabling the engine room to suspend and rise to a balance point if TW is smaller than driving torque TN needed for the yaw of the engine room, and forward feeding to generate forward electromagnetic torque by a yaw motor stator; enabling the engine room to suspend and rise to the balance point if TW is greater than TN and smaller than 2TN, and backward feeding to generate backward electromagnetic torque by the stator and increasing the raw damping; not suspending if TW is greater than 2TN, adjusting current of a yaw motor rotor, enabling the generated electromagnetic attraction force to be smaller than the gravity of the engine room, generating friction resistance so as to increase the yaw damping, and forward feeding by the stator; and enabling the engine room to yaw at a given yaw speed. The method is capable of controlling the yaw damping of the wind power unit in real time, so that the wind power unit has the advantages of no noise, accurate wind orientation and simple and convenient maintenance.

Description

technical field [0001] The invention relates to a control method, in particular to a method for automatically regulating the yaw damping of a wind turbine, and belongs to the technical field of wind power generation. Background technique [0002] The yaw system is an essential part of the horizontal axis wind turbine. At present, the large and medium-sized wind turbines at home and abroad all use active yaw gear-driven yaw systems. The yaw system is generally composed of yaw gear ring, side bearing, sliding pad holding device, up and down and side sliding pads, yaw driving device, adjusting bolts, yaw limit switch, proximity switch, wind speed and direction instrument, etc. Among them, the yaw driving device includes a yaw motor, a reduction gearbox, and a pinion, which are fastened to the main frame of the nacelle by bolts. [0003] The working principle of this yaw system is: when the wind direction changes, the control system controls the yaw motor in the yaw drive devic...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F03D7/04
CPCF03D7/042F05B2270/32F05B2270/321F05B2270/602Y02E10/72
Inventor 蔡彬褚晓广张正强张烨王乃哲王楠楠
Owner QUFU NORMAL UNIV
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