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A Plug and Play Series Hybrid Active Harmonic Isolator

A plug-and-play, series hybrid technology, applied to harmonic reduction devices, AC networks to reduce harmonics/ripples, transformers/inductor cores, etc., can solve problems such as complex access methods of active filters , to achieve the effect of easy controller design, good filtering effect and easy guarantee of stability

Active Publication Date: 2020-05-19
HUAZHONG UNIV OF SCI & TECH
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  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0006] Aiming at the defects of the prior art, the purpose of the present invention is to provide a plug-and-play active harmonic isolator which is very convenient to implement and has a good filtering effect, aiming to solve the problem of accessing the existing series hybrid active filter complex problem

Method used

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  • A Plug and Play Series Hybrid Active Harmonic Isolator
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  • A Plug and Play Series Hybrid Active Harmonic Isolator

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Embodiment Construction

[0035] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0036] Based on the previously proposed series hybrid active power filter based on fundamental wave flux compensation, the present invention proposes a plug-and-play active harmonic isolator. While realizing normal filtering functions, the installation Convenient, plug and play, no need to cut off the power, and suitable for voltage-type and current-type harmonic sources.

[0037] The invention discloses a single-phase plug-and-play active harmonic isolator, which is applied to a single-phase power system. The single-phase active harmonic isolator includes a harmonic voltage detection unit and a co...

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Abstract

The present invention discloses a plug-and-play active series-connection compensator, wherein the single-phase active series-connection compensator comprises a voltage detection unit, a control unit and a special transformer unit; and the voltage detection unit comprises voltage transformers, the control unit comprises a voltage gain circuit and a voltage generating circuit. The voltage transformers are connected in parallel on the primary side of the special transformer unit; the voltage transformers are connected with the voltage gain circuit and the voltage gain circuit is connected with the voltage generating circuit; the voltage generating circuit is connected with the secondary side of the special transformer unit; and the primary side of the special transformer unit is in series connection between an accessing grid and the load. The plug-and-play active series-connection compensator of the invention has the advantages of convenient access to the power grid, smaller inverse variable, simple structure, simple control and good compensation effect.

Description

technical field [0001] The invention relates to the technical field of power filters, in particular to a plug-and-play series hybrid active harmonic isolator. Background technique [0002] The wide application of power electronic devices and non-linear loads generates a large number of harmonics, which degrades the power supply quality of the power system. Harmonics is a kind of pollution and a public nuisance to the power system. It not only poses a threat to the safe and economic operation of the power system itself, but also brings great influence and harm to the surrounding electrical environment. Various advanced precision instruments and equipment in the fields of modern information technology, microelectronics technology and numerical control processing technology have higher and higher requirements for power supply quality, and harmonic suppression has become a hot issue concerned by power systems and power users. [0003] Power electronic conversion devices are the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J3/01H01F27/24
CPCH01F27/24H02J3/01Y02E40/40
Inventor 李达义叶立文余天保
Owner HUAZHONG UNIV OF SCI & TECH
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