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Coil structure of multi-voltage experimental transformer

A transformer, multi-voltage technology, applied in the direction of transformer, transformer/inductor coil/winding/connection, variable transformer, etc., can solve the problem of not being able to provide different voltage levels, and achieve the effect of reducing investment

Inactive Publication Date: 2014-07-02
ZHENJIANG TIANLI TRANSFORMER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The upper part of the secondary coil is the number of turns of the main coil, and the lower part is the number of turns for voltage regulation. Generally, the voltage can only be adjusted around ±5% or ±2*2.5%, and different voltage levels cannot be provided, so it is not suitable for laboratory transformers. use

Method used

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  • Coil structure of multi-voltage experimental transformer
  • Coil structure of multi-voltage experimental transformer
  • Coil structure of multi-voltage experimental transformer

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Experimental program
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Embodiment Construction

[0014] A coil structure of a multi-voltage experimental transformer, the primary voltage is not adjusted, and the secondary coil can output a variety of different voltage levels, including the primary coil 1 and the secondary coil 2, the primary coil is a delta connection structure, and the secondary coil includes the upper half coil 21 and the lower half coil 22, between the upper half coil and the lower half coil, there is a switching device for adjusting the connection mode between the upper half coil and the lower half coil. The connection mode of the upper coil and the lower coil is: parallel delta connection, series delta connection or series star connection.

[0015] In the following, the laboratory requires a primary input voltage of 480V, three-phase, 50Hz, and an output voltage of 3.3kV / 6.6kV / 11.43kV as an example to illustrate the design idea in detail.

[0016] Take the primary coil delta connection structure, the number of turns is 48 turns, then the turn voltage ...

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Abstract

The invention discloses a coil structure of a multi-voltage experimental transformer. The coil structure comprises a primary coil and a secondary coil, the primary coil is of a corner connection structure, the secondary coil comprises an upper half coil and a lower half coil, and a switching device used for regulating a connection mode of the upper half coil and the lower half coil is arranged between the upper and lower half coils. The connection mode of the upper half coil and the lower half coil is parallel corner connection, serial corner connection or serial star connection. The transformer adopting the coil structure can output various different voltage classes, and needs of a laboratory are met.

Description

technical field [0001] The invention belongs to the field of transformer manufacturing and relates to a coil structure of a multi-voltage experimental transformer. Background technique [0002] Conventional transformer voltage regulation is relatively fine, generally 2.5%, so it is only suitable for areas with small voltage fluctuation range and relatively good power supply quality. However, under the requirement that the laboratory needs to provide high-voltage test voltages of different voltage levels, ordinary transformers cannot meet the needs. Figure 4 It is the coil connection method in the conventional voltage experiment transformer. The upper part of the secondary coil is the number of turns of the main coil, and the lower part is the number of turns for voltage regulation. Generally, the voltage can only be adjusted around ±5% or ±2*2.5%, and different voltage levels cannot be provided, so it is not suitable for laboratory transformers. use. Contents of the inve...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01F27/28H01F29/02
Inventor 李云孙国平
Owner ZHENJIANG TIANLI TRANSFORMER
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