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Universal hybrid distribution transformer

A technology of distribution transformers and main transformers, which is applied in the direction of transformer/inductor parts, transformer/inductor coils/windings/connections, intermediate conversion to DC conversion equipment, etc., and can solve complex structures and discrete magnetic parts. Increase the volume of the iron core, waste ferromagnetic materials and other problems, to achieve the effect of a wide range of application prospects

Pending Publication Date: 2022-02-18
JIANGSU ELECTRIC POWER CO +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Too many discrete magnetic parts will increase the overall iron core volume of the system, making the overall structure of the device very complex, which will not only cause large losses, but also cause a lot of waste of ferromagnetic materials

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] See attached figure 2 The first winding 1 of the main transformer and the first multiplexing winding 3 of the auxiliary transformer are connected to the AC power supply in series, the second winding 2 of the main transformer is connected to the load, the second multiplexing winding 4 of the auxiliary transformer and the first inductance winding 5 of the auxiliary transformer and The second inductance winding 6 of the auxiliary transformer is connected in series to form an auxiliary winding, and then connected to the two output terminals of the DC-AC converter to form a hybrid distribution transformer with magnetic integration of transformer leakage inductance and converter inductance. The auxiliary winding of this type of transformer consists of It is composed of three dispersed windings, so there is a large leakage inductance, so the output of the converter does not require additional series reactance.

Embodiment 2

[0032] See attached image 3 , the first winding 1 of the main transformer is connected to the AC power supply, the first multiplexing winding 3 of the auxiliary transformer is connected in series with the first inductive winding 5 of the auxiliary transformer and the second inductive winding 6 of the auxiliary transformer, and then connected to the two output terminals of the DC-AC converter Connected, the second winding of the main transformer and the second multiplexing winding of the auxiliary transformer and the subsequent load form a hybrid distribution transformer with inductive magnetic integration of the transformer winding and the DC-AC converter. The first inductive winding of the auxiliary transformer of this type of transformer is 5 And the second inductance winding 6 of the auxiliary transformer can be equivalent to an inductance, so the output of the DC-AC converter does not need an additional series filter inductance.

Embodiment 3

[0034] See attached Figure 4 The first winding 1 of the main transformer is connected to the AC power supply, the second winding 2 of the main transformer is connected in series with the first inductance winding 5 of the auxiliary transformer and the second inductance winding 6 of the auxiliary transformer, and then connected in series with the DC-AC converter and then connected to a load, forming A hybrid transformer with magnetically integrated transformer winding and converter inductance. The role of the first inductance winding 5 of the auxiliary transformer and the second inductance winding 6 of the auxiliary transformer of this type of transformer can be equivalent to inductance, so the output of the converter does not require additional series filter inductance .

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Abstract

The invention relates to a universal hybrid distribution transformer which comprises a main transformer and an auxiliary transformer bank. The auxiliary transformer bank is arranged at the top end of the main transformer, the main transformer comprises three iron core columns, windings are arranged on the three iron core columns respectively, the three iron core columns are longitudinally arranged, iron yokes are arranged among the three iron core columns to fix the three iron core columns, the auxiliary transformer bank comprises three independent auxiliary transformers, and each auxiliary transformer comprises an L-shaped iron core, an I-shaped iron core and a winding wound on the iron core. According to the invention, the partial winding design of the transformer has universality; and the windings can be flexibly connected and combined according to actual converter structures and electric energy control requirements and play different roles, and meanwhile, magnetic integration of the converter inductors and the transformer windings is also realized so that magnetic integration hybrid distribution transformers with different structures are formed.

Description

technical field [0001] The invention relates to an electric device, specifically, a hybrid power distribution transformer that can be freely combined according to requirements. Background technique [0002] In recent years, the process of intelligent upgrading and transformation of distribution network has been accelerating. Although traditional distribution transformers have simple structure, reliable operation and good economy, their controllability is poor and they cannot adapt to the future development trend of distribution network. Therefore, Research on new controllable distribution transformers has gradually become a current research hotspot. In this context, the scientific and technological workers of ABB Research Institute, University of Zielona Góra, and Instituto Superior Técnico proposed the concept of hybrid distribution transformers. The so-called hybrid distribution transformer is a new type of controllable distribution transformer realized by improving the d...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02M5/10H02M7/02H02M5/40H01F27/30
CPCH02M5/10H02M7/02H02M5/40H01F27/306
Inventor 万曦上官小丹邓文军张永生陆文钦郝雯娟路锐王建华薛波闫涵
Owner JIANGSU ELECTRIC POWER CO
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