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Variable pitch standby power supply system for wind power generation and control method of variable pitch standby power supply system

A backup power supply and wind turbine technology, applied in wind power generation, power network operating system integration, emergency power supply arrangements, etc., can solve the problems of waste of manpower and material resources, cumbersome replacement operations, etc., and achieve the effect of enhancing wide adaptability

Pending Publication Date: 2022-01-07
HUANENG CLEAN ENERGY RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, it is cumbersome to replace the existing backup power supply, and a lot of manpower and material costs are wasted

Method used

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  • Variable pitch standby power supply system for wind power generation and control method of variable pitch standby power supply system
  • Variable pitch standby power supply system for wind power generation and control method of variable pitch standby power supply system
  • Variable pitch standby power supply system for wind power generation and control method of variable pitch standby power supply system

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Embodiment Construction

[0014] Embodiments of the present disclosure are described in detail below, examples of which are illustrated in the drawings, in which the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary only for explaining the present disclosure and should not be construed as limiting the present disclosure. On the contrary, the embodiments of the present disclosure include all changes, modifications and equivalents coming within the spirit and scope of the appended claims.

[0015] Aiming at the technical problem of cumbersome replacement of the existing backup power supply mentioned in the background technology and a waste of a lot of manpower and material resources, the technical solution of this embodiment provides a pitch backup power supply system for wind power generators, combined below Specific examples illustrate this method. ...

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Abstract

The invention provides a variable pitch standby power supply system for wind power generation and a control method of the variable pitch standby power supply system, and the variable pitch standby power supply system comprises a rectification circuit, a DC-DC conversion circuit, a storage battery, a controller, an IGBT drive circuit, a charging switch control circuit, a voltage detection circuit and a current detection circuit, the input end and the output end of the rectification circuit are connected with a power source and the input end of the DC-DC conversion circuit respectively, the output end of the DC-DC conversion circuit is connected with the input end of the storage battery, the storage battery is connected with a variable pitch system of the wind generating set, and the voltage detection circuit and the current detection circuit are connected with the storage battery and the controller respectively. The controller is connected with the charging switch control circuit, the charging switch control circuit is connected with the IGBT driving circuit, and the IGBT driving circuit is connected with the DC-DC conversion circuit, so that the standby power supply can be conveniently disassembled and replaced, and the wide adaptability of the variable pitch standby power supply in a fan variable pitch application environment is enhanced.

Description

technical field [0001] The present disclosure relates to the technical field of wind power equipment, in particular to a pitch backup power system for wind power generation and a control method thereof. Background technique [0002] The pitch system of wind turbines controls the speed of the wind rotor by controlling the angle of the blades, and then controls the output power of the fan, and can stop the fan safely through aerodynamic braking. The backup power supply of the pitch system is the entire pitch control important part of the system. [0003] In the prior art, the backup power supply of the pitch control system generally adopts the form of a charger plus a lead-acid battery. Under normal working conditions, the lead-acid battery does not intervene in the work of the pitch control system, and the charger is used to charge the lead-acid battery to maintain battery power. When the pitch system is disconnected from the grid, the pitch system is switched to be powered...

Claims

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Application Information

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IPC IPC(8): H02J9/06H02J7/06
CPCH02J9/062H02J7/06Y02E10/76Y02B10/70Y02B70/30Y04S20/20
Inventor 李力森蔡安民林伟荣焦冲蔺雪峰
Owner HUANENG CLEAN ENERGY RES INST
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