Driving power supply of wind turbine generator pitch variable system

A technology of pitch control system and wind turbine, which is applied in wind power generation, electric variable adjustment, control/regulation system, etc. It can solve the problems of excessive driving current and reducing driving current, achieve non-contact, improve current suppression, Effect of High Input Impedance

Inactive Publication Date: 2018-04-06
CHONGQING KK QIANWEI WINDPOWER EQUIP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Aiming at the deficiencies of the above-mentioned prior art, the present invention provides a drive power supply for the pitch system of a wind turbine, wh

Method used

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  • Driving power supply of wind turbine generator pitch variable system
  • Driving power supply of wind turbine generator pitch variable system
  • Driving power supply of wind turbine generator pitch variable system

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Example Embodiment

[0017] The present invention will be further described in detail below with reference to the accompanying drawings and preferred embodiments.

[0018] like Figure 1 to Figure 3 As shown in the figure, a drive power supply for a pitch system of a wind turbine includes a controller, a DC power supply, a transformer K5, a voltage-driven switch for connecting the motor of the pitch system, and a drive chip capable of controlling the on-off of the voltage-driven switch. The power supply positive terminal and the power supply negative terminal of the driving switch are respectively connected to the transformer, and the driving pole of the voltage driving switch is connected to the signal output terminal of the driving chip; the signal input terminal of the driving chip is connected to the signal output terminal of the controller for receiving The pitch signal sent by the controller also includes a VIPer22AS power supply chip and a current limiting resistor R25; one end of the curre...

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Abstract

The invention discloses a driving power supply of a wind turbine generator pitch variable system. The driving power supply comprises a controller, a direct current power supply, a transformer, a voltage driving type switch connected with a pitch variable system motor, and a driving chip capable of controlling on-off of the voltage driving type switch; the signal input end of the driving chip is connected with the signal output end of the controller and used for receiving a pitch variable signal from the controller; the driving power supply also comprises a power supply chip with the model of VIPer22AS and a current-limiting resistor; one end of the current-limiting resistor is connected with the power supply positive end of the direct current power supply while the other end is connected with a sampling voltage input end of the power supply chip; an internal circuit power supply pin of the power supply chip is connected to the power supply positive end of the direct current power supply; the field effect transistor source and the ground end of the power supply chip are grounded, and share the same ground with the grounding end of the direct current power supply; and one end of thetransformer is connected with the power supply positive end of the direct current power supply while the other end is connected with the field effect transistor drain of the power supply chip. By virtue of the driving power supply, the driving current is lowered and high safety and high interference resistance are achieved in a condition of satisfying the driving voltage.

Description

technical field [0001] The invention relates to a driving power supply for driving a motor of a wind turbine pitch system. Background technique [0002] In the prior art, the pitch system of the wind turbine adopts a 24V DC power supply, which provides driving voltage for the motor in the pitch system after being stepped down by a transformer. However, due to the large current, it is easy to cause the transformer to heat up rapidly and the temperature of the transformer is too high, which shortens the life of the transformer. If the heat dissipation is insufficient, the coil in the transformer may even be burned in serious cases. Contents of the invention [0003] Aiming at the deficiencies of the above-mentioned prior art, the present invention provides a drive power supply for the pitch system of a wind turbine, which solves the technical problem of excessive drive current in the prior art, and can reduce the drive current under the condition of satisfying the drive volt...

Claims

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Application Information

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IPC IPC(8): H02M3/335H02M1/32
CPCY02E10/76H02M3/33523H02M1/32
Inventor 韩嘉翼霍永鹏凌静夏桂森
Owner CHONGQING KK QIANWEI WINDPOWER EQUIP
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