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Soft-switch full wave rectifying push-pull normal shock inverter

A full-wave rectification, push-pull forward technology, applied in the direction of converting DC power input to DC power output, instruments, and adjusting electrical variables, etc.

Inactive Publication Date: 2012-10-17
NORTHWESTERN POLYTECHNICAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In order to avoid the deficiencies of the prior art, the present invention proposes a soft-switching full-wave rectification push-pull forward converter, which solves the working state of the hard switch of the primary side switch tube of the push-pull forward converter and overcomes the problem of the secondary side rectifier tube. Shutdown spike problem

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  • Soft-switch full wave rectifying push-pull normal shock inverter

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Embodiment Construction

[0029] Now in conjunction with embodiment, accompanying drawing, the present invention will be further described:

[0030] The embodiment of the present invention includes a primary circuit, a rectifier circuit and a resonant unit:

[0031] a. The primary side circuit includes two parallel branches, the order of the first branch connection is the positive pole of the power supply, the first winding N of the primary side of the transformer p1 , the first switch tube S 1 , the negative pole of the power supply, where the first winding of the primary side of the transformer N p1 The terminal with the same name is connected to the positive pole of the power supply, and the first winding of the primary side of the transformer N p1 The synonymous termination of the first switching tube S 1 ; The order of connection of the second branch is: the positive pole of the power supply, the second switch tube S 2 , Transformer primary side second winding N p2 , the negative pole of the ...

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Abstract

The invention relates to a soft-switch full wave rectifying push-pull normal shock inverter, which is characterized in that the inverter comprises two switch pipes S1 and S2 on a primary side, a clamping capacitor Cc, two rectifying diodes D1 and D2 on a secondary side, a filtering inductor L1, a filtering capacitor C1, a transformer (the transformer comprises two primary side windings and two secondary side windings) and a resonance unit (the resonance unit comprises a resonance inductor Lr, a resonance capacitor Cr, three diodes D3, D4 and D5 and a switch pipe S3). According to the inverter, a connection and a disconnection without current of a primary switch pipe are realized, the problem of a hard on-off working state of the primary side switch pipe of the push-pull normal shock inverter is solved, meanwhile the rectifying diodes on the secondary side are disconnected without current, and the phenomenon of a reverse recovery peak of the rectifying diode is eliminated.

Description

technical field [0001] The present invention relates to the field of DC-DC converters, in particular to the field of soft switching of DC-DC converters, in particular to a soft-switching full-wave rectification push-pull forward converter, which is a soft-switching full-wave rectification mode Open circuit topology. Background technique [0002] In recent years, with the depletion of petrochemical energy, solar energy, fuel cells, etc. have attracted people's attention and research as non-polluting and renewable energy sources. However, the voltage amplitude generated by direct conversion of these energy sources is small. For these renewable energy sources, suitable converters must be designed. The push-pull forward converter has the advantages of both the forward circuit and the push-pull circuit, so it has become the preferred solution for low voltage and high current. Among the rectification methods of the push-pull forward circuit, full-wave rectification is the most ef...

Claims

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Application Information

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IPC IPC(8): H02M3/337
CPCY02B70/1491Y02B70/10
Inventor 唐虹毛金奎张西龙赵磊
Owner NORTHWESTERN POLYTECHNICAL UNIV
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