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Low-voltage side filter compensation energy-saving rectifier transformer

A technology for compensating transformers and rectifying transformers, applied in transformer/inductor coils/windings/connections, harmonic reduction devices, and AC networks to reduce harmonics/ripples, etc. Wave loss, noise and other problems, to achieve the effect of compact structure, small footprint and high efficiency

Inactive Publication Date: 2014-10-22
江西变压器科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method can only meet the power supply requirements of the power supply department for the factory, and cannot reduce the harmonics in the transformer, and it cannot reduce various losses and noises caused by harmonics

Method used

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  • Low-voltage side filter compensation energy-saving rectifier transformer
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Embodiment 1

[0013] Such as figure 1 As shown, the present invention includes a voltage regulating transformer 1, a main transformer 2, a filter compensation transformer 6, and a saturable reactor 3. Usually, the voltage regulation transformer 1 is placed in an oil tank alone; the main transformer 2, the filter compensation transformer 6, and the saturation reactor Reactor 3 is placed in another fuel tank. The primary side of the main transformer 2 adopts zigzag phase shifting (or polygonal phase shifting). The valve side of the main transformer 2 usually adopts the same-phase anti-parallel structure, and the two valve side windings are respectively connected into a positive angle winding and a reverse angle winding. There are two delta-connected windings on the low-voltage side of the filter compensation transformer 6, which respectively form a positive delta connection and a reverse delta connection. The two windings on the low-voltage side of the filter compensation transformer 6 are ...

Embodiment 2

[0015] Such as figure 2 As shown, the present invention includes a voltage regulating transformer 8, a main transformer 9, and a filter compensation transformer 12. Usually, the voltage regulation transformer 8 is placed in an oil tank alone; the main transformer 9, and the filter compensation transformer 12 are placed in another oil tank. The primary side of the main transformer 9 adopts zigzag phase shifting (or polygonal phase shifting). The valve side of the main transformer 9 usually adopts an in-phase anti-parallel structure, and two valve side windings are respectively connected into a positive angle winding and a reverse angle winding. There are two delta-connected windings on the low-voltage side of the filter compensation transformer 12, which respectively form a positive delta connection and a reverse delta connection. The two windings on the low-voltage side of the filter compensation transformer 12 are respectively connected to the two low-voltage windings of th...

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PUM

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Abstract

A low-voltage side filter compensation energy-saving rectification transformer is disclosed. Two windings of a filter compensation transformer low voltage side are connected with two positive and negative angle connecting low voltage windings of a main transformer respectively, impedance of filter compensation transformer high voltage winding voltage, a high voltage side connection filter, a reactive power compensation device and a filter compensation transformer high voltage side to a low voltage side is required to be small in design, and usually total impedance of a voltage regulating transformer network side in the rectification transformer is required to be less than 10%. The rectification transformer of the invention has the following advantages: (1) the rectification transformer has the advantages of low loss, high efficiency, environmental protection and energy-saving; (2) the transformer has the advantages of low noise and environmental protection; (3) the rectification transformer has a high power factor to the network side; (4) the rectification transformer has a small output harmonic wave to a power network; (5) the transformer has the advantages of compact structure and small land occupation area.

Description

technical field [0001] The invention relates to a rectifier transformer, in particular to an energy-saving rectifier transformer with filter compensation on the low-voltage side. Background technique [0002] In electrolysis industry and electric furnace industry, AC to DC power supply mode is widely used, and the key equipment is rectifier (electric furnace) transformer. For example, electrolytic aluminum rectifier transformers, chemical rectifier transformers, and electric furnace rectifier transformers. The valve-side load DC voltage of this type of industrial transformer is usually very low (only 100V-2000V), but the valve-side load DC current is very large, up to 100kA / unit. Therefore, this type of industrial transformer contains a lot of harmonic loss and low power factor, and it will cause high noise and low efficiency, which does not meet the requirements of green energy saving. Moreover, the harmonic current of the transformer will disturb the power grid, causing...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J3/01H01F27/28
CPCY02E40/40
Inventor 黄强
Owner 江西变压器科技股份有限公司