Modular high-boost high-capacity isolation type rectifier circuit

A rectifier circuit and high-boost technology, applied in the direction of irreversible AC power input conversion to DC power output, etc., can solve problems such as difficult current sharing, achieve increased capacity, easy control of circuit heat dissipation, and reduce circuit complexity.

Pending Publication Date: 2018-10-09
CHINA THREE GORGES UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of the above-mentioned deficiencies in the existing technology, in order to solve the problem of difficult current sharing when multiple modules of the existing voltage doubler rectifier circuit are connected in parallel

Method used

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  • Modular high-boost high-capacity isolation type rectifier circuit
  • Modular high-boost high-capacity isolation type rectifier circuit
  • Modular high-boost high-capacity isolation type rectifier circuit

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Embodiment Construction

[0034] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0035] Such as figure 2 As shown, a 4-module self-balanced high-boost large-capacity isolated rectifier circuit, which includes an AC input power supply, 4 modules, and an output filter capacitor C 0 , 1 load R L . Each of these modules contains a transformer with a transformation ratio of 1:k, 4 diodes, and 2 capacitors. In this way there are 4 transformers T 1 , T 2 , T 3 , T 4 , 8 capacitors C 11 、C 12 、C 13 、C 14 、C 21 、C 22 、C 23 、C 24 , 16 diodes D 1 、D 2 、D 3 、D 4 、D 101 `, D 02 、D 03 、D 04 、D 11 、D 12 、D 13 、D 14 、D 21 、D 22 、D 23 、D 24 . Among them, the connection methods of the four modules are as follows:

[0036] First module, secondary side, transformer T 1 Termination capacitor C with the same name on the secondary side 11 Left end, diode D 11 anode and diode D 01 the cathode, the capacitance C 11 The right ...

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Abstract

A modular self-current-sharing high-boost high-capacity isolation type rectifier circuit comprises one alternating-current input power supply, m (which is an even number) modules, one output filter capacitor C0 and one load RL. Compared with an existing high-boost rectifying circuit, the input phase number can be modularly adjusted, automatic current sharing is achieved between all the modules andthe transformer, and the output gain is adjustable. The voltage stress and the current stress of a diode are also reduced. Large-capacity rectification conversion can be completed under the voltage withstand voltage and over-current level of an existing device. The modular self-current-sharing high-boost high-capacity isolation type rectifier circuit can be conveniently applied to application occasions of different power grades requiring input and output electrical isolation.

Description

technical field [0001] The invention relates to a high-boost rectifier circuit, in particular to a modular high-boost large-capacity isolated rectifier circuit. Background technique [0002] The traditional diode bridge rectifier is widely used, but on the one hand, its rectified output voltage is low, and it is difficult to meet the requirements of high input and output voltage gain; on the other hand, the voltage stress of the diode is high, and it is difficult to design in the occasion of high output voltage. . If the isolated rectifier using a transformer relies on the high transformation ratio of the transformer to increase the gain of the rectifier, it is difficult to design a large-capacity, high-turn-ratio transformer. [0003] The existing voltage doubler rectifier circuit can achieve higher voltage output, but it is often used in applications with lower power levels. In large-capacity applications, there is a problem that the diode current stress is too large and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02M7/08
CPCH02M7/08
Inventor 邾玢鑫王寒刘崧李振华杨楠
Owner CHINA THREE GORGES UNIV
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