Redundant feathering system and method for controlling wind power variable pitch

A feathering and wind power technology, applied in wind power generation, engine control, wind turbine control, etc., can solve the problems of main power and backup power failure, unable to complete feathering action, driver failure, etc., to achieve good control effect, avoid Flying accident, the effect of ensuring safe operation

Pending Publication Date: 2020-02-04
HUANENG CLEAN ENERGY RES INST
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0006] Depend on figure 1 It can be seen that when one or more of the following situations occur in the first shaft cabinet, the feathering action cannot be completed: the main power supply and backup power supply in the shaft cabinet fail, the driver fails or the motor fails

Method used

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  • Redundant feathering system and method for controlling wind power variable pitch
  • Redundant feathering system and method for controlling wind power variable pitch
  • Redundant feathering system and method for controlling wind power variable pitch

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Embodiment Construction

[0037] The present invention will be described in detail below in conjunction with the accompanying drawings.

[0038] A redundant feathering system for controlling wind power variable pitch, including a shaft cabinet, in which a main power supply, a backup power supply, a driver, a motor, an encoder, a controller backup power selector, and output terminals of the main power supply and the backup power supply are arranged Both are connected to the driver and the power input terminal of the motor; the encoder is connected to the signal input terminal of the controller, the signal output terminal of the controller is connected to the driver, the driver is connected to the control signal input terminal of the motor, and the output terminal of the motor is connected to the active end of the blade. The motor is used to drive the paddle; the driver adopts a servo drive; the motor adopts a servo motor;

[0039] The backup power selector is a circuit selection switch with three option...

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Abstract

The invention discloses a redundant feathering system and method for controlling wind power variable pitch. The redundant feathering system for controlling wind power variable pitch comprises three shaft cabinets, the output ends of a main power supply and a backup power supply are connected with a driver and a motor power input ends; a backup power selector is provided with three alternative interfaces, a first interface is connected with a shaft cabinet driver, a second interface is connected with the next shaft cabinet driver, a third interface is connected with the former shaft cabinet driver; the signal input end of the backup power supply selector is connected with the output end of a controller; three alternative interfaces are arranged in a servo motor selector, the first interfaceof the servo motor selector is connected with a shaft cabinet motor, the second interface of the servo motor selector is connected with the next shaft cabinet motor, the third interface of the servomotor selector is connected with the former shaft cabinet motor; and the control signal input end of the servo motor selector is connected with the output end of the controller. On the basis of addinga small number of circuit switching equipment, the key components between the shaft cabinets can be shared through the backup power selector and the servo motor selector so that the feathering operation can be completed.

Description

technical field [0001] The invention belongs to the technical field of wind power generation, and in particular relates to a redundant feathering system and method for controlling wind power variable pitch. Background technique [0002] The pitch control system plays the role of aerodynamic safety shutdown in megawatt-scale wind turbines. If the pitch control system fails and fails to feather the propeller, it may lead to safety accidents such as speeding of the wind turbine. During the design process of the pitch system, there is already a relatively generous design margin in terms of safety and reliability, but if some key working modules, such as backup power supply, drive and other equipment, fail, it may still cause one or more wind turbines to fail. The blades cannot be feathered, causing certain safety hazards. [0003] The wind power pitch system generally adopts a three-axis cabinet structure, which controls the three blades of the wind turbine separately. In the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F03D7/00F03D17/00H02J9/06
CPCF03D7/00F03D17/00H02J9/06F05B2260/76F05B2260/845F05B2270/602Y02B10/70Y02E10/72Y02E10/76
Inventor 王华王剑钊童彤任鑫王恩民王晨杨晓峰赵鹏程
Owner HUANENG CLEAN ENERGY RES INST
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