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A power electronic transformer

A technology of power electronics and transformers, applied in the parts, circuits, electrical components of transformers/inductors, etc., can solve the problems of difficult implementation of multiple transformer cores, avoid the phenomenon of discharge, be easy to implement, and improve safety and reliability sexual effect

Active Publication Date: 2019-02-01
XUJI GRP +4
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a power electronic transformer, which is used to solve the problem that multiple transformer cores are grounded at the same time in the prior art, which is difficult to implement

Method used

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  • A power electronic transformer
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Embodiment Construction

[0016] The specific embodiment of the present invention will be further described below in conjunction with accompanying drawing:

[0017] An embodiment of a power electronic transformer of the present invention:

[0018] In the prior art, the iron core of the power electronic transformer is grounded to solve the problem of floating voltage generated by the iron core. However, since the transformer is fixed in the power grid system by pouring or other methods, if the iron core is grounded, it will not only destroy the original transformer fixing method, but also Insulation treatment is required, and since the power grid system contains multiple transformer modules, and the transformer core is grounded at the same time, the insulation requirements of the power grid system will be increased.

[0019] Therefore, in view of the above problems, the present invention provides a power electronic transformer, including a high-voltage winding, a low-voltage winding, and an iron core. T...

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Abstract

The invention provides a power electronic transformer. The transformer comprises a high-voltage winding, a low-voltage winding and an iron core, wherein a resistor is casted between the iron core and the low-voltage winding so that electrical connection is formed between the iron core and the low-voltage winding, and the resistor is a high-resistance resistor and is used for preventing a high-frequency current formed between a high-frequency DC / DC module and the windings. By a mode of pouring the resistor, effectively control is performed on a suspension potential of the iron core; and moreover, compared with a mode of reducing the suspension potential by connecting the transformer iron core with the ground in the prior art, the mode of pouring the resistor between the iron core and the low-voltage winding is relatively low in implementation difficult and is easy to implement, internal overvoltage in the power electronic transformer can be effectively reduced, a discharge phenomenon of the transformer is prevented, and the safety and the reliability of equipment are improved.

Description

technical field [0001] The invention belongs to the technical fields of AC and DC distribution networks, power electronics and user electric power, and in particular relates to a power electronic transformer. Background technique [0002] Faced with increasingly diverse energy sources, loads, and electricity demands, traditional distribution networks face enormous challenges in terms of reliability and efficiency. As a result, the new intelligent AC-DC distribution network has received widespread attention, which can better access distributed power sources and DC loads, and improve the power quality, reliability and operating efficiency of the distribution system. [0003] Due to its inherent shortcomings, such as saturation, DC bias, waveform distortion, and large no-load loss, traditional transformers have been difficult to meet the needs of the development of AC and DC distribution networks, and power electronic transformers have emerged as the times require. At present,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01F27/34H01F27/40
CPCH01F27/34H01F27/402
Inventor 高峰张浩吴金龙安昱王先为张军胡丁文姚为正甄帅
Owner XUJI GRP