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Parallel high-power switching power supply

A high-power switch and parallel technology, which is applied in the direction of adjusting electrical variables, control/regulation systems, instruments, etc., can solve the problems of poor stability and reliability of parallel high-power power supplies, achieve good stability, improve stability, The effect of high working precision

Active Publication Date: 2015-04-29
SICHUAN INJET ELECTRIC CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a parallel high-power switching power supply with more effective coordination between the parallel power units in order to overcome the problem of poor overall stability and reliability of the existing parallel high-power power supply

Method used

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  • Parallel high-power switching power supply

Examples

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Embodiment 1

[0030] Embodiment 1: as figure 1 As shown, the purpose of the present invention is to provide a parallel high-power switching power supply with more effective coordination between the power units in parallel in order to overcome the problem of poor overall stability and reliability of the existing parallel high-power power supply. Including a system control unit 1 and more than one power unit 2 connected in parallel, the high-power switching power supply also includes a system feedback unit 3, the input end of the system feedback unit 3 is connected to the total output circuit of each power unit 2 connected in parallel, so The output terminal of the system feedback unit 2 is connected to the input terminal of the system control unit 1 , and the output terminal of the system control unit 1 is connected to the control terminals of each power unit 2 .

[0031]The system control unit 1 is used to output control signals to each power unit 2 connected in parallel to control the oper...

Embodiment 2

[0046] Embodiment 2: as figure 2 As shown, in this embodiment, in addition to the devices described in Embodiment 1, the system feedback unit also includes a shunt feedback unit or a Hall feedback unit 31, and the shunt feedback unit or Hall feedback unit 31 It is connected with the total output circuit of the power supply, and is used for collecting the total current value of each power unit.

[0047] The system feedback unit also includes a fourth selector switch Q4, and the fourth selector switch Q4 is used to select whether the system feedback unit adopts the feedback current superposition mode for total loop current feedback or adopts the shunt feedback mode or the Hall feedback mode for total loop current feedback. Loop current feedback.

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Abstract

The invention relates to the field of high-power switching power supply, and in particular to a parallel high-power switching power supply. The parallel high-power switching power supply comprises a system control unit, more than one parallel power unit and a system feedback unit, wherein the input end of the system feedback unit is connected with master output loops of the parallel power units; the output end of the system feedback unit is connected with the input end of the system control unit; the output end of the system control unit is connected with control ends of the power units. According to the parallel high-power switching power supply, various power unit setting modes are combination of analogue setting and communication setting; the reliability of the power supply is improved; meanwhile, the parallel high-power switching power supply comprises the system feedback unit; and overall closed-loop adjustment of the system is achieved by three feedback units such as current divider feedback, hall feedback and inner feedback current superposition.

Description

technical field [0001] The invention relates to the field of high-power switching power supplies, in particular to a parallel high-power switching power supply. Background technique [0002] With the development of the times, the application of high-power power supplies is becoming more and more extensive. At the same time, different industries have different requirements for the voltage and current of high-power power supplies. This requires that the same power supply product should be able to provide multiple voltages and currents. In order to adapt to this market demand and enhance the flexibility of the power supply system, parallel high-power switching power supplies have emerged, but most of the existing parallel high-power switching power supplies only have feedback circuits inside each parallel power unit. Moreover, there is a lack of effective cooperation among the various power units, resulting in poor overall stability and reliability of the parallel-connected hig...

Claims

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Application Information

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IPC IPC(8): G05F1/56
Inventor 邓长春朱朝华
Owner SICHUAN INJET ELECTRIC CO LTD
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