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Power supply circuit for slip ring encoder of wind generating set

A technology for wind turbines and power supply circuits, applied in the direction of emergency protection circuit devices, circuit devices, emergency protection circuit devices for limiting overcurrent/overvoltage, etc., which can solve the problems of slip ring encoders being easily damaged and interfered, Achieve the effects of wide protection range, short power supply distance and preventing signal loss

Pending Publication Date: 2022-05-13
HUANENG NEW ENERGY CO LTD SHANXI BRANCH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, due to unit interference and long-distance transmission, slip ring encoders are easily damaged in thunderstorms

Method used

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  • Power supply circuit for slip ring encoder of wind generating set
  • Power supply circuit for slip ring encoder of wind generating set

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] A power supply circuit for a slip ring encoder of a wind power generating set, which consists of: an encoder 1 and a pitch control cabinet, and a power module 3 is installed in the pitch control cabinet, and the power module and the The encoder connection;

[0018] A lightning protection circuit 2 for preventing the encoder from being damaged by lightning is connected to the circuit where the power supply module is connected to the encoder;

[0019] The lightning protection circuit includes two diodes 4 and a RC protector 5, the two diodes are connected in parallel with the RC protector after being connected in series, and the ground terminal of the RC protector is connected to the two The series circuit formed by the diodes is connected to the ground.

Embodiment 2

[0021] According to the power supply circuit for the slip ring encoder of the wind power generating set described in Embodiment 1, the two diodes of the lightning protection circuit are connected back to back.

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Abstract

Provided is a wind generating set slip ring encoder power supply circuit. The surge protector is far away from the slip ring encoder, the slip ring is installed in the hub, and a circuit can be connected to a master controller only through a hollow shaft of the gearbox. The device comprises an encoder (1) and a variable-pitch electric control cabinet, a power module (3) is additionally arranged in the variable-pitch electric control cabinet, and the power module is connected with the encoder; a lightning protection circuit (2) for preventing the encoder from being damaged by lightning stroke is connected to a circuit where the power supply module is connected with the encoder; the lightning protection circuit comprises two diodes (4) and a resistance-capacitance protector (5), the two diodes are connected in series and then connected with the resistance-capacitance protector in parallel, and the grounding end of the resistance-capacitance protector is connected with a series circuit formed by the two diodes and then grounded. The invention is used for supplying power to the slip ring encoder of the wind generating set.

Description

technical field [0001] The invention relates to a power supply circuit for a slip ring encoder of a wind power generating set. Background technique [0002] The allowable power supply voltage range of the wind turbine slip ring encoder is 9~30VDC. The power supply voltage of the current unit design is 24VDC, which is supplied from the cabin cabinet to the hub slip ring. The reverse breakdown voltage of the 24VDC power supply circuit surge protector is 31.1 -34.4VDC, the reverse peak voltage is 28VDC, and the surge protector is far away from the slip ring encoder, and the slip ring is installed in the hub, and the line must pass through the hollow shaft of the gearbox to connect to the main control. Therefore, due to unit interference and long-distance transmission, slip ring encoders are easily damaged in thunderstorms. Contents of the invention [0003] The object of the present invention is to provide a power supply circuit for a slip ring encoder of a wind power genera...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02H9/04
CPCH02H9/044H02H9/045
Inventor 米磊董显奕刘阳赵方海阚捷琳
Owner HUANENG NEW ENERGY CO LTD SHANXI BRANCH
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