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Half-bridge circuit parallel passive current sharing circuit

A half-bridge circuit and parallel technology, which is applied in the direction of electrical components, adjusting electric variables, converting DC power input to DC power output, etc., can solve problems such as uneven current passing, and achieve simple and clear external circuits, convenient use, and low cost of use low effect

Pending Publication Date: 2019-01-11
KUNMING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The invention provides a passive current sharing circuit connected in parallel with half-bridge circuits, which is used to solve the problem of uneven current passing through each module when the half-bridge module circuits are connected in parallel

Method used

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  • Half-bridge circuit parallel passive current sharing circuit
  • Half-bridge circuit parallel passive current sharing circuit
  • Half-bridge circuit parallel passive current sharing circuit

Examples

Experimental program
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Effect test

Embodiment 1

[0023] Embodiment 1: as Figure 1-7 As shown, a parallel passive current sharing circuit of a half-bridge circuit, including N parallel half-bridge modules, is divided into upper and lower parts by the middle point M of the output of the half-bridge modules, and each part is composed of a high-frequency current transformer Circuit, residual current discharge circuit;

[0024] The high-frequency current transformer circuit includes a high-frequency current transformer and a MOS tube; the residual current discharge circuit includes a resistor, a capacitor, and a fast recovery diode;

[0025] The primary side windings T1-1, T1-2,..., T1-N of all the high-frequency current transformers in the upper part are serially connected to their respective half-bridge modules in sequence, and their positions are between the source output of the upper MOS tube and the Between the middle point M of the half-bridge module, all the secondary side windings T2-1, T2-2, ... T2-N of the upper part ...

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Abstract

The invention discloses a half-bridge circuit parallel passive current sharing circuit, belonging to the technical field of electronic application. The invention solves the problem the the flowing currents of the respective half-bridge circuits are inconsistent when the half-bridge module circuits are used in parallel. Which is suitable for all kinds of circuit with half-bridge structure, the invention eliminates the use of costly current sharing chips. The use cost can be controlled to be very low, and the use range is wide, especially suitable for the power supply with large output current,the use is convenient, the external circuit is simple and clear, no additional current-sharing chip is used, no additional power supply is required, and the circuit has higher use stability than the circuit using current-sharing chip.

Description

technical field [0001] The invention relates to a half-bridge circuit parallel passive current equalizing circuit, which belongs to the technical field of electronic applications. Background technique [0002] At present, the high-power switching power supply system generally adopts the method of using multiple power supplies in parallel. Similarly, in the design and production of high-power power supplies, in order to use a single power supply to output more power as much as possible, the internal power unit modules can only be connected in parallel in the power supply design to achieve high power. This method is one of the current development directions of power supply technology. The modular power unit that can operate in parallel has many advantages, so that the power unit modules with low power can be easily combined into a high-power power supply system through parallel connection, and its capacity can be expanded arbitrarily. : The second is to realize the redundant ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02M3/00H02M3/155
CPCH02M3/00H02M3/155
Inventor 李思奇李得菘舒文彬荣恩国代维菊罗淑龄
Owner KUNMING UNIV OF SCI & TECH