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High-frequency transformer

A high-frequency transformer and secondary winding technology, applied in the direction of fixing transformer or mutual inductance, transformer/inductor coil/winding/connection, preventing/reducing unnecessary electric/magnetic influence, etc., can solve the problem of occupation, large meter Problems such as space and large transformer volume

Inactive Publication Date: 2015-06-10
WAHLAP TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, in the application field of smart energy meters, it is generally required to have other modules such as GPRS module, PLC module, etc., and the peripheral hardware circuit is more complicated.
Therefore, the requirements for the power supply of the meter are also relatively high, not only requiring stable power output, but also requiring the power supply to output greater power to supply modules and other circuits. If the coil is wound large enough, the volume of the transformer will become large and heavy, occupying a large space in the table, and the performance in terms of vibration and shock will be greatly reduced

Method used

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  • High-frequency transformer

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Embodiment Construction

[0010] A high-frequency transformer, comprising at least one primary winding arranged on the EE25 iron core frame, and at least one secondary winding arranged on the EE25 iron core frame, the primary winding and the secondary winding are coupled in the following manner: It is wound sequentially from the primary winding to the outside, and the primary winding is placed inside the secondary winding, which further includes at least one coil arranged between the primary winding and the secondary winding and coaxial with it. and an insulated wire provided at an output end of the at least one secondary winding.

[0011] In a preferred embodiment, the periphery of the high-frequency transformer is potted with epoxy resin.

[0012] In a preferred embodiment, it further includes a secondary winding not arranged on the EE25 iron core frame, which is connected to a circuit board with at least one secondary winding arranged on the EE25 iron core frame.

[0013] In a preferred embodiment,...

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Abstract

The invention relates to a switching power supply. If the high-frequency transformer is compared with a traditional transformer power supply, a special high-frequency transformer design and winding technology are adopted, the switching power supply has the advantage of ultra-wide working voltage range, and also has advantages in the aspects of occupied space and efficiency; in the aspect of cost, if a three-phase intelligent electric meter adopts traditional transformers to supply power, three transformers need to be adopted, the cost of the device such as a peripheral rectifier bridge is added, and the total cost is equivalent to that of the switching power supply. Therefore, the switching power supply adopting the ultra-wide working voltage range has great advantages when compared with the traditional transformer power supply mode, and is an ideal power supply of the intelligent electric meter.

Description

technical field [0001] The invention relates to electric power information collection technology, in particular to a switching power supply with an ultra-wide voltage working range for a three-phase smart meter. Background technique [0002] The rated working voltage of the traditional meter is 57.7V, and it is powered by a 57.7V input power frequency transformer. The working voltage range is narrow from 0.7Un to 1.2Un, and once the wrong power supply (such as 220V mains) is used, the transformer will be burned. If the rated operating voltage is 230V, use a 230V input power frequency transformer to supply power, and the operating voltage range is narrower at 0.7Un~1.2Un. However, using the mutual inductance meter powered by a switching power supply with an ultra-wide voltage working range, the hardware can also serve as a traditional CT / PT meter and a traditional CT meter at the same time, without the need to make a meter with two specifications of hardware. The cost will n...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01F19/04H01F27/36H01F27/28
Inventor 双俊峰张亮张方勇
Owner WAHLAP TECH CO LTD
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