A laminated busbar for high-power three-level medium-voltage wind power converter

A technology for wind power converters and laminated busbars, applied in the field of laminated busbars, can solve the problems of complicated three-level circuit connections, etc., and achieve the effects of convenient modular design, cost reduction, and good reliability.

Active Publication Date: 2017-01-25
STATE GRID CORP OF CHINA +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The voltage and current levels of the IGBT used in the high-power medium-voltage three-level wind power converter are relatively high, and the wiring of the three-level circuit is complicated, so the design of the laminated busbar is directly related to the reliable operation of the power circuit sex and ease of installation

Method used

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  • A laminated busbar for high-power three-level medium-voltage wind power converter
  • A laminated busbar for high-power three-level medium-voltage wind power converter
  • A laminated busbar for high-power three-level medium-voltage wind power converter

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Embodiment Construction

[0035] The specific embodiments of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0036] Such as figure 1 , 2 as shown, figure 1 They are the structural diagram and the rear view of the laminated busbar respectively; the laminated busbar in this application is divided into three parts, the number of layers is 2 layers, and each part is an independent entity. The laminated busbar includes three detachable busbars 1, 2 and 3. The first layer includes busbar 1, which is a "convex" busbar; the second layer includes busbar 2 and busbar 3, both of which are square busbars. Busbar 1, busbar 2 and busbar 3 are laminated busbars.

[0037] The outer side of the short board of busbar 1 is provided with an AC outlet terminal 15 . The two ends of the long board of the first busbar are respectively provided with pins, and the two pins are paired with the pins of the second and third busbars respectively to form two snubb...

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Abstract

The invention provides an overlapped busbar applied to a high-power tri-level medium-voltage wind power converter. The overlapped busbar is a two-layer busbar which is composed of three overlapped busbar parts. The overlapped busbar is a novel overlapped busbar which is designed for a power conversion part of the tri-level medium-voltage wind power converter. The number of layers of the overlapped busbar is controlled to be two, so that processing and installation are facilitated on the condition of guaranteeing electrical performance, and cost is lowered.

Description

technical field [0001] The invention relates to a method in the technical field of electric power storage, in particular to a laminated busbar for a high-power three-level medium-voltage wind power converter. Background technique [0002] With the rapid development of wind power generation, the single-unit capacity and power density of wind turbines are getting larger and higher. It is difficult for traditional two-level converters to meet the requirements of large-capacity wind turbines. [0003] In recent years, multi-level converters have become a hot topic of research. Three-level circuits are the simplest and most practical of multi-level circuits. Compared with traditional two-level circuits, three-level circuits have 2 times the forward blocking voltage capability, and can reduce harmonics and lower switching frequency, thereby reducing device loss and making low-voltage switching devices more widely used. In addition, the three-level circuit can effectively increase...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01B5/00H02M1/00
CPCY02E10/76
Inventor 翟志华苗亚陈海荣王彤田雷周辉吴福保
Owner STATE GRID CORP OF CHINA
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