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Zero magnetic flux compensation-based multi-range current converter and compensation method

A current converter, zero-flux technology, applied in the direction of conversion equipment that can be converted to DC without intermediate conversion, to achieve the effect of satisfying gain balance, ensuring consistency, and ensuring stability

Pending Publication Date: 2017-11-17
STATE GRID CORP OF CHINA +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Existing current converters cannot meet the above requirements, so it is urgent to provide a multi-range high-precision current converter based on zero flux compensation

Method used

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  • Zero magnetic flux compensation-based multi-range current converter and compensation method
  • Zero magnetic flux compensation-based multi-range current converter and compensation method
  • Zero magnetic flux compensation-based multi-range current converter and compensation method

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Embodiment Construction

[0019] Below in conjunction with accompanying drawing, the present invention is further described:

[0020] Such as figure 1 As shown, a multi-range current converter based on zero flux compensation includes a power conversion core T1, an error detection core T2, a primary winding N11, a first secondary winding N21 and an nth secondary winding N2n, the The primary winding N11, the first secondary winding N21 and the nth secondary winding N2n are wound together on the power conversion magnetic core T1 and the error detection magnetic core T2, and the power conversion magnetic core T1 is also wound with a compensation winding Nb, The error detection magnetic core T2 is also wound with a zero magnetic flux detection winding Ne, the first secondary winding N21 and the nth secondary winding N2n are connected with an output range switching unit 1, and the compensation winding Nb and zero flux A zero-flux compensation unit 2 is connected between the flux detection windings Ne.

[0...

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Abstract

The invention provides a zero magnetic flux compensation-based multi-range current converter and a compensation method. A primary winding, a first secondary winding and an nth secondary winding are all wound on a power conversion magnetic core and an error detection magnetic core; a compensation winding is also wound on the power conversion magnetic core; a zero magnetic flux detection winding is also wound on the error detection magnetic core; the first secondary winding and the nth secondary winding are connected with an output range switch unit; and a zero magnetic flux compensation unit is connected between the compensation winding and the zero magnetic flux detection winding. The invention provides a multi-range winding design structure based on parallel connection of dual magnetic cores, thereby enlarging the output current range, and meeting the detection requirement of a gateway meter of different current specifications; and due to arrangement of a gain adjustment unit in the zero magnetic flux compensation unit, output loop gains of different ranges of winding are balanced, so that it is ensured that the current conversion system outputs stably and the output accuracy in different range states is consistent.

Description

technical field [0001] The invention relates to a multi-range current converter, in particular to a multi-range current converter based on zero magnetic flux compensation and a compensation method. Background technique [0002] With the increasing application of gateway electric energy meters, the demand for verification is increasing. In order to improve the verification efficiency, it is necessary to realize the centralized and synchronous verification of the gateway electric energy meters with different current specifications. This requires the use of multi-range high-precision current converters during the verification process. First, to achieve electrical isolation from the primary current to the secondary current to ensure that each meter works under equipotential conditions; Scale accurate transformation. Existing current converters cannot meet the above requirements, so it is urgent to provide a multi-range high-precision current converter based on zero flux compen...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02M5/12
CPCH02M5/12
Inventor 汪司珂郭雨唐登平李俊陈俊夏水斌蔡文嘉石洪雷鸣夏天马奔王琪庞博明东岳
Owner STATE GRID CORP OF CHINA
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