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Switching power supply device and variable propeller system control cabinet

A switching power supply and pitch system technology, which is applied to output power conversion devices, electrical equipment enclosures/cabinets/drawers, wind power generation, etc. Reduce the effect of wires and components

Inactive Publication Date: 2016-09-21
XUJI GRP +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] In order to solve the above-mentioned problem of complicated installation and operation of components in the cabinet for the motor brake release power supply of the large-scale wind turbine pitch system, the present invention provides a switching power supply device and a pitch system

Method used

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  • Switching power supply device and variable propeller system control cabinet
  • Switching power supply device and variable propeller system control cabinet

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Embodiment Construction

[0028] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0029] Pitch system control cabinet embodiment

[0030] A pitch control system control cabinet includes a switching power supply device. Such as figure 1 As shown, the switching power supply device includes a casing 10, on which there is an AC input port 11, a backup power input port 12, a control signal input port 13, a low-voltage DC output port 21, and a high-voltage DC output port 22 Connect to port 23 with a safety switch. circuit diagram as figure 2 As shown, the AC input port 11 is connected in series with a first AC / DC rectifier 1 and an anti-reverse diode 5 and then connected to the low-voltage DC output port 21. The AC input port 11 is also connected in series with a first relay switch 7 and a first relay switch 7. Two AC / DC rectifiers 4 are connected to the high-voltage DC output port 22; the backup power input port 12 is connected in series w...

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Abstract

The invention relates to a switching power supply device and a variable propeller system control cabinet which are mainly applied to a variable propeller system for wind power generation. The switching power supply device comprises a housing, an AC input port, an emergency power supply input port, a low-voltage DC output port and a high-voltage DC output port, wherein the AC input port is connected with a first AC / DC rectifier in series and then connected with the low-voltage DC output port; the AC input port is also connected with the rectifier in series and then connected with the high-voltage DC output port; the emergency power supply input port is connected with a first DC / DC converter in series and then connected with the low-voltage DC output port; and the emergency power supply input port is also connected with a second DC / DC converter and a relay in series and then connected with the high-voltage DC output port. Only various ports of the switching power supply device need to be connected with corresponding devices when the switching power supply device is used, so that the problem of complicated installation and operation of components in a traditional conventional design cabinet is solved; meanwhile, exposed electric wires and components in the cabinet are reduced; and the potential safety hazard is reduced.

Description

technical field [0001] The invention relates to a switching power supply device and a pitch-changing system, in particular to a switching power supply device and a pitch-changing system applied to large-scale wind turbines. Background technique [0002] With the acceleration of world energy consumption and the reduction of traditional energy reserves, it has become a strategic choice for countries all over the world to vigorously develop new clean energy. Wind energy has become the most ideal clean energy because of its renewable, pollution-free, and high-energy characteristics. Wind power generation is an important form of using wind energy. [0003] Wind power requires the use of large wind turbines. The pitch system of a large-scale wind turbine needs a stable motor brake release power to ensure that the generator can be stopped safely in the event of a serious failure or major accident. Therefore, both the main AC power supply and the DC backup power supply of the pitc...

Claims

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Application Information

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IPC IPC(8): H02M7/00H05K5/02
CPCH02M7/00H05K5/0247Y02E10/76
Inventor 王艳领赵瑞杰代兴华郑卫红
Owner XUJI GRP
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