Active power filter

A technology for power filters and power grids, applied in active power filtering and AC networks to reduce harmonics/ripples, etc., can solve the problems that the filter capacity no longer meets the actual requirements, time-consuming and labor-intensive, etc.

Active Publication Date: 2015-10-28
SHANGHAI ELECON INTELLIGENT TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, once the user selects a filter with a certain capacity, even if it is found that the capacity of the filter no longer meets the actual requirements after a period of on-site operation, the user can only re-select a filter with a suitable capacity to replace the originally selected filter. time consuming and costly

Method used

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Embodiment Construction

[0026] Various exemplary embodiments, features, and aspects of the invention will be described in detail below with reference to the accompanying drawings. The same reference numbers in the figures indicate functionally identical or similar elements. While various aspects of the embodiments are shown in drawings, the drawings are not necessarily drawn to scale unless specifically indicated.

[0027] The word "exemplary" is used exclusively herein to mean "serving as an example, embodiment, or illustration." Any embodiment described herein as "exemplary" is not necessarily to be construed as superior or better than other embodiments.

[0028] In addition, in order to better illustrate the present invention, numerous specific details are given in the specific embodiments below. It will be understood by those skilled in the art that the present invention may be practiced without certain of the specific details. In some instances, methods, means, components and circuits well kn...

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PUM

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Abstract

The present invention relates to an active power filter comprising a first base, a plurality of capacity units, and a controller. Wherein, each two capacity units can be connected with contact through the connection pieces of the two capacity units, and one capacity unit in the multiple capacity units is connected to the base with contact through the connection piece of the capacity unit and the connection piece of the base. According to the active power filter of the embodiment of the present invention, the requirement of an active power filter capacity by the field can be conveniently satisfied, and the filter can be rapidly replaced in the field and can be conveniently repaired in the condition that the filter is failed.

Description

technical field [0001] The invention relates to the field of power electronics, in particular to an active power filter. Background technique [0002] With the rapid development and wide application of power electronics technology, electric energy has been more fully utilized. However, non-linear power electronic devices such as rectifiers, frequency converters, computers, etc. distort the voltage and current of the grid and generate power harmonics. Moreover, with the increase in the number of nonlinear devices and their capacity, the problem of harmonic pollution in the power system is becoming more and more widespread, which seriously affects the quality of electric energy and has a great impact on the safe and economical operation of the power system. [0003] In order to improve the quality of electric energy and the quality of the distribution network, a common method is to use a harmonic suppression device such as an active power filter (English: Active power filter,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/01
CPCY02E40/20
Inventor 徐瑞新刘涛谢美玲
Owner SHANGHAI ELECON INTELLIGENT TECH CO LTD
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