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Built-in uninterrupted power supply of wind power generation paddle changing system

A pitch control system and power supply technology, applied in wind power generation, power network operating system integration, circuit devices, etc., can solve problems affecting the normal operation of the wind power generation system, poor pitch system, etc., to ensure uninterrupted power supply and simple circuit effective effect

Inactive Publication Date: 2011-04-13
SUZHOU NENGJIAN ELECTRIC
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The control power provided by the main control system to the pitch system is directly supplied by the mains power supply, so when the mains power suddenly fails, it will cause adverse consequences to the pitch system, thus affecting the normal operation of the entire wind power generation system

Method used

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  • Built-in uninterrupted power supply of wind power generation paddle changing system

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Embodiment Construction

[0014] see figure 2 , the UPS power supply of a pitch system provided by the present invention is provided internally, and the 24VDC control power required by the pitch system is provided by two switching power supplies T1 and T2, and the input power supply 230VAC of T1 is given by the main control system. The input power 216VDC of T2 is given by the back-up DC battery pack inside the pitch system. The positive poles of the two output power sources are connected to the comparator T3 for comparison, and the higher one is used as the control power source of the pitch control system. The comparator T3 of the present invention is a diode group. This system requires that the output voltage of T1 must be greater than the output voltage of T2. Once the 230VAC power supply from the main control system loses power, the 216VDC DC power supply from the internal battery pack of the pitch system is switched to the control power supply of the system without interruption through T2. figu...

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Abstract

The invention provides a built-in uninterrupted power supply of a wind power generation paddle changing system, comprising a first switch power supply electrically connected with a mains supply, and further comprising a built-in DC battery pack of the wind power generation paddle changing system and a second switch power supply connected with the DC battery pack, output ends of the first switch power supply and the second switch power supply are respectively connected with two input ends of a comparator, and output voltage of the first switch power supply in power-up state is always more than that of the second switch power supply. The built-in uninterrupted power supply of a wind power generation paddle changing system mainly has the following benefits: the standby battery pack of the wind power generation paddle changing system is used as the uninterrupted power supply, uninterrupted power supplying of the wind power generation paddle changing system is ensured, and circuits are simple and effective.

Description

technical field [0001] The invention relates to a built-in uninterruptible power supply for a wind power generation pitch system, and belongs to the technical field of wind power generation. Background technique [0002] As a renewable and clean energy with mature technology, wind power has been widely valued by various countries. The pitch control system is an important component of the wind power generation system. Its main function is to control the automatic adjustment of the blade pitch angle with the wind speed: when the wind speed is low, the wind turbine has the maximum starting torque; When it is high, the angle of attack of the airflow on the blades is changed, and then the aerodynamic torque obtained by the wind turbine is changed, so that the output power of the generator remains stable. [0003] In the wind power pitch system, the required control loop power supply is usually provided by the main control system through UPS. Such as figure 1 As shown, the main...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J9/06
CPCY02E10/766Y02B10/72Y02B10/70Y02B70/30Y02E10/76Y04S20/20
Inventor 傅建民王政朱益军刘高峰
Owner SUZHOU NENGJIAN ELECTRIC
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