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AC-DC-AC power unit and assembly thereof

A power unit, AC-DC technology, applied in electrical components, output power conversion devices, conversion equipment for intermediate conversion to DC conversion, etc., to achieve the effect of increasing capacity, facilitating manufacturing, and reducing size and weight

Inactive Publication Date: 2007-04-18
上海艾帕电力电子有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0013] In order to solve many problems existing in the large capacity of the existing AC-DC-DC power unit, the present invention provides a new AC-DC-DC power unit and its components, which can solve the above problems

Method used

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  • AC-DC-AC power unit and assembly thereof
  • AC-DC-AC power unit and assembly thereof
  • AC-DC-AC power unit and assembly thereof

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Embodiment Construction

[0034] The specific implementation manners of the large-capacity AC-DC-DC power unit of the present invention will be specifically described below in conjunction with the accompanying drawings, wherein the same or similar reference numerals represent the same or similar components.

[0035] Fig. 4 is the structure of the AC-DC-DC power unit of the present invention.

[0036] As mentioned above, the entire power unit also includes a rectifier bridge, an inverter bridge and a capacitor bank. The rectifier bridge is used to rectify the input AC power into pulsating DC power, and the capacitor bank is used to filter the pulsating DC power output by the rectifier bridge to form a stable DC power. And the inverter bridge is used to invert the smooth direct current into alternating current of required frequency and amplitude, but in this embodiment, the entire power unit of the present invention is constructed to include two converter modules, both Connected via DC busbars P and N. ...

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PUM

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Abstract

The invention relates to an AC-DC-AC power unit and the components thereof. And it comprises rectifier bridge, inverter bridge and capacitor group, where the rectifier bridge is used to convert input AC current into ripple DC current, the capacitor group is used to filter the ripple DC curren into stable DC current and the inverter bridge is used to invert the stable DC current into AC current with the required frequency and amplitude. And its sturcutre comprises at least two current transformer modules, their positive and negative ends are interconnected in parallel through positive and negative DC buses, respectively, each current transformer module comprises an inverter bridge arm and an independent radiator group. And it implements disperse radiation and reduces stray inductance, easy to make and reducing maintaining, changing and transporting difficulities.

Description

technical field [0001] The invention relates to the field of AC-DC voltage source inverters, in particular to large-capacity AC-DC-AC power units and components thereof. Background technique [0002] AC-DC-AC voltage source inverters generally use diodes to rectify the input grid-side AC power into pulsating DC power, which is filtered by a capacitor to form a stable DC power, and then inverts through an inverter bridge composed of self-shutoff power electronic devices to output all Alternating current of desired frequency and amplitude. In the actual product, auxiliary circuits such as a current limiting circuit for closing and powering on, a capacitor voltage equalizing circuit, and a surge absorbing circuit can be added as needed. [0003] China Machinery Industry Press "Universal Inverter and Its Application" Second Edition (ISBN7-111-04766-4 / TP.598) page 396 introduces an AC-DC-AC power unit, and its power unit composition structure diagram is shown in Figure 1 shown....

Claims

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Application Information

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IPC IPC(8): H02M5/44H02M1/14
Inventor 竺伟
Owner 上海艾帕电力电子有限公司
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