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Redundancy control system and redundancy control method for wind power generation propeller change

A redundant control and pitch system technology, applied in the control of wind turbines, wind power generation, wind turbines, etc., can solve problems such as servo controllers are not considered, and achieve the effects of reducing costs, improving reliability, and low cost

Inactive Publication Date: 2010-01-13
TSINGHUA UNIV
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Problems solved by technology

For example, the Chinese patent application "pitch control device" (patent number: 200420002630.4) introduces the method of using a backup power supply to make the blades feather reliably and ensure the safety of the unit under unexpected conditions such as power grid failure, but it does not consider When the servo controller fails, feathering cannot be completed

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  • Redundancy control system and redundancy control method for wind power generation propeller change
  • Redundancy control system and redundancy control method for wind power generation propeller change
  • Redundancy control system and redundancy control method for wind power generation propeller change

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Embodiment Construction

[0038] The present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.

[0039] Such as figure 1 As shown, the wind power pitch redundancy control system of the present invention is composed of three sets of pitch systems, a host computer and a three-phase AC power supply. The upper computer is connected to the three sets of pitch systems. The first pitch system 1 includes a first servo controller 11, a first pitch motor 12, a first backup DC power supply 13, a first main contactor group 14 and a first The braking device 15; the second set of pitch system 2 includes a second servo controller 21, a second pitch motor 22, a second backup DC power supply 23, a second main contactor group 24 and a second braking device 25; The three pitch control systems 3 include a third servo controller 31 , a third pitch motor 32 , a third backup DC power supply 33 , a third main contactor group 34 and a third braking device 35 . Three-ph...

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Abstract

The invention relates to a redundancy control system and a redundancy control method for wind power generation propeller change. The redundancy control system is characterized by comprising a first set of propeller change systems, a second set of propeller change systems, a third set of propeller change systems, a supervisory computer and a three-phase AC power supply, wherein the input end of the three-phase AC power supply is connected with the input end of an AC power supply of the first set of propeller change systems, the second set of propeller change systems and the third set of propeller change systems; the first set of propeller change systems, the second set of propeller change systems and the third set of propeller change systems respectively comprise servo controllers, a propeller change motor, a backup DC power supply, a main contactor group and a brake device; and the supervisory computer is connected with the first set of propeller change systems, the second set of propeller change systems and the third set of propeller change systems and used for monitoring whether the systems generate AC power supply failure or not and all the servo controllers generate failure or not and controlling the propeller change motor to reliably feather propellers. The invention not only has relatively simple system structure but also can ensure low cost under the condition of not increasing the quantity of system devices and can be widely used for wind power generation systems.

Description

technical field [0001] The present invention relates to a wind power generation control system and method, in particular to a redundant control system and method for wind power generation pitch change. Background technique [0002] The pitch control system is a key link to ensure the overall safety of the wind turbine generator. During the working process, the wind turbine adjusts the power by adjusting the blade angle of the pitch control system. In order to ensure the overall safety of the wind turbine, it is necessary to ensure that the blades can be reliably feathered and braked in the event of any failure. Feathering is to adjust the blades to rotate at a 90-degree angle, so that the speed of the fan will drop. Failure to feather the fan may cause catastrophic consequences such as damage to the gearbox or even the collapse of the tower. [0003] Existing pitch control systems generally use servo motors to drive the blades, and the servo motors perform servo control on ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F03D7/00F03D9/00
CPCY02E10/723Y02E10/72
Inventor 肖曦柴建云余康康庆吴国荣黄哲
Owner TSINGHUA UNIV
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