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Single-body transformer having novel wiring structure

A wiring structure and transformer technology, applied in the field of transformers, can solve the problems of high induced voltage, potential safety hazards, low utilization rate of voltage regulating coil materials, etc., and achieve the effect of reducing induced voltage, avoiding circulating current, reactance and resistance drop completely consistent

Active Publication Date: 2012-07-11
GUANGXI LIUZHOU SPECIAL TRANSFORMER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this voltage regulation mode, if the transformer operates at a high voltage level, part of the coarse adjustment coil of the voltage regulation coil is not connected to the circuit, but is only set to meet the voltage regulation range of the transformer, and there is a relatively large coil at the end. High induced voltage has certain potential safety hazards
In most cases, the transformer often operates at the rated gear or a gear near the rated gear, which makes part of the coarse adjustment coil of the voltage regulating coil often idle, resulting in low material utilization of the voltage regulating coil

Method used

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  • Single-body transformer having novel wiring structure
  • Single-body transformer having novel wiring structure
  • Single-body transformer having novel wiring structure

Examples

Experimental program
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Effect test

Embodiment 1

[0031] A single-body transformer with a new wiring structure, the voltage regulation coil of each phase has the same structure, including a coarse adjustment coil L and a fine adjustment coil L0, and the coarse adjustment coil L in each phase includes 4 gears connected in series or in parallel The coarse adjustment coils L1, L2, L3 and L4, the two gears at the front end of the 4-speed coarse adjustment coil are connected in series with the coarse adjustment coils at the rear end after being connected with the series-parallel switch K, that is: the third gear coarse adjustment coil Coil L3 is connected in series with the coarse adjustment coil L4 of the fourth gear, and the coarse adjustment coil L1 of the first gear and the coarse adjustment coil L2 of the second gear are connected in series with the coarse adjustment coil L3 of the third gear after being connected with the series-parallel switch K (see attached figure 1 ).

[0032] The number of turns of the first gear ...

Embodiment 2

[0035] A single-body transformer with a new wiring structure, the voltage regulation coil of each phase has the same structure, including a coarse adjustment coil L and a fine adjustment coil L0, and the coarse adjustment coil L in each phase includes 4 gears connected in series or in parallel Coarse adjustment coils L1, L2, L3 and L4, the two gears located in the center of the 4-speed coarse adjustment coil are connected in series with the coarse adjustment coils at the front and rear ends of each gear after being connected with the series-parallel switch K, that is: the second The gear coarse adjustment coil L2 and the third gear coarse adjustment coil L3 are connected in series with the first gear coarse adjustment coil L1 and the fourth gear coarse adjustment coil L2 through the series-parallel switch K (see attached Figure 4 ).

[0036] The number of turns of the second gear coarse tuning coil L2 and the third gear coarse tuning coil L3 are equal, and the second gear...

Embodiment 3

[0039] A single-body transformer with a new wiring structure, the voltage regulation coil of each phase has the same structure, including a coarse adjustment coil L and a fine adjustment coil L0, and the coarse adjustment coil L in each phase includes 4 gears connected in series or in parallel The coarse adjustment coils L1, L2, L3 and L4, the two gears at the rear end of the 4-speed coarse adjustment coil are connected in series with the coarse adjustment coils at the front end after being connected with the series-parallel switch K, that is: the first gear coarse adjustment coil Coil L1 is connected in series with the coarse adjustment coil L2 of the second gear, and the coarse adjustment coil L3 of the third gear and the coarse adjustment coil L4 of the fourth gear are connected in series with the coarse adjustment coil L2 of the second gear after being connected with the series-parallel switch K (see attached Figure 5 ).

[0040] The number of turns of the third gear...

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Abstract

Disclosed is a single-body transformer having a novel wiring structure. Voltage-regulating coils in each phase are identical in structures and include crude-regulating coils and fine-regulating coils, the crude-regulating coils in each phase include n-level crude-regulating coils which are connected in series or parallel, two adjacent levels of the n-level crude-regulating coils are serially connected with the other levels of crude-regulating coils which are connected in series after being connected with a series-parallel switch, wherein the n is an optional integer within 2 to 10. Idling coils are utilized sufficiently to increase current guide sections of the coils, so that equivalent reduced resistance and resistance loss of windings of a transformer body are reduced and efficiency of the transformer is improved. Meanwhile, inductive voltage of the tails of the crude-regulating coils can be reduced and insulation level thereof is reduced as well, and safety coefficient is increased. The crude-regulating coils which are connected in series and parallel are equal in the number of turns and are uniformly vertically disposed in a staggered manner in the transformer body, reactance and resistance drop of the two coils are completely identical, and current circulation caused by uneven voltage drop of the two coils connected in parallel is avoided.

Description

technical field [0001] The invention relates to the field of transformers, in particular to a single-body transformer with a novel wiring structure. Background technique [0002] The rectifier transformers used in the electrochemical field and the electric furnace transformers in the metallurgical industry often require a large voltage regulation range due to the needs of the process, and the gap between the voltages of each two gears should not be too large. Therefore, the transformer needs to have a regulator. A voltage coil or a voltage regulating transformer is attached, and a transformer with only a voltage regulating coil is called a single body transformer. When regulating the voltage of a single-body transformer, if more voltage regulation gears are required, multi-level coarse and fine adjustments are often used to achieve it (see attached Figure 9~10 ). In this voltage regulation mode, if the transformer operates at a high voltage gear, part of the coarse adjustm...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01F29/02H01F27/40
Inventor 胡旭初陈天平王涛阮势伟
Owner GUANGXI LIUZHOU SPECIAL TRANSFORMER
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