Magnetic component integrated active clamp positive and negative laser converter

A converter, forward and flyback technology, applied in the field of converters, can solve the problems of large volume and weight, and achieve the effect of reducing the magnetic flux density, reducing the total volume and total weight

Inactive Publication Date: 2009-04-08
北京新雷能有限责任公司 +1
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  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

Obviously, the traditional active-clamp forward-flyback (FFAC) converter has two magnetic components, a transfo

Method used

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  • Magnetic component integrated active clamp positive and negative laser converter
  • Magnetic component integrated active clamp positive and negative laser converter
  • Magnetic component integrated active clamp positive and negative laser converter

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Embodiment Construction

[0027] In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0028] figure 2 Shown is the structural diagram of the first integrated magnetic element of the present invention, its function is equivalent to figure 1 Transformer T1 and filter inductor L1 in. The iron core of the integrated magnetic element includes at least three magnetic columns. In this embodiment, it consists of two E-shaped iron cores with opposite openings. The primary winding Np and the secondary winding are wound on one side of the iron core to form a transformer magnetic circuit. ; The inductance winding NL is wound on the iron core on the other side to form an inductive magnetic circuit; the central magnetic column of the iron core forms the common magnetic circuit of the transformer magnetic circuit and the induct...

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Abstract

An actively clamped forward-flyback converter of an integrated magnetic element comprises a primary circuit (1), a secondary rectification and capacitance filter circuit (3) which consists of a filter circuit and a rectification circuit as well as an integrated magnetic circuit (2) which is connected with the primary circuit (1) and the secondary rectification and capacitance filter circuit (3); wherein, the integrated magnetic circuit (2) is composed of iron cores of at least three magnetic pillars; one of the magnetic pillars is respectively wound with a primary winding (Np) and a secondary winding, thus forming a transformer magnetic circuit; the other one of the magnetic pillars is wound with an inductive winding (NL) to form an inductive magnetic circuit; and at least another one of the magnetic pillars forms a common magnetic circuit of the transformer magnetic circuit and the inductive magnetic circuit; the magnetic pillars of the transformer magnetic circuit and the inductive magnetic circuit are respectively provided with an air gap; the primary winding (Np) is connected with the primary circuit (1) of the converter, the secondary winding is connected with the rectification circuit of the secondary rectification and capacitance filter circuit (3); the inductive winding (NL) is connected with the filter circuit of the secondary rectification and capacitance filter circuit (3); and the rectification circuit and the filter circuit are connected with the output terminal. The invention is small in volume and light in weight.

Description

technical field [0001] The invention relates to a converter, in particular to an active clamp forward and flyback converter with integrated magnetic elements. Background technique [0002] The rapid development of power electronics technology has continuously put forward higher requirements for the power density, efficiency, output ripple and dynamic performance of the converter, especially the rapid development of the microprocessor has put forward great requirements for the module power supply that supplies power to it. challenge. While applying a variety of technical means to improve the performance of the module power supply, it is increasingly found that magnetic components (referred to as magnetic components, including inductors and transformers) are an important factor that limits the volume, weight, and efficiency of the converter. According to the statistics of the American Power Supply Manufacturers Association (PSMA), the volume of the magnetic parts accounts for...

Claims

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Application Information

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IPC IPC(8): H02M3/28H02M3/335H01F38/00
Inventor 陈永胜杜永生
Owner 北京新雷能有限责任公司
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