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
CN101624969AInactive Publication Date: 2010-01-13TSINGHUA UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
TSINGHUA UNIV
Publication Date
2010-01-13
Estimated Expiration
Not applicable · inactive patent

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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.
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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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