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Power supply capable of converting high-power high-voltage constant-current input into constant-voltage output, and control method thereof

A high-voltage constant current, constant voltage output technology, applied in the field of power supply, can solve the problems of inflexible use and inability to directly match

Pending Publication Date: 2021-05-07
广州宇曦电子科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] 3) The repeaters and branches in the transoceanic communication system are powered by constant current. If high-voltage DC constant-current power transmission and distribution are used, they can be used directly in series. However, if high-voltage DC constant-voltage power transmission and distribution is used, the middle The repeater and splitter can be adapted to the constant voltage mode and used in the case of large voltage changes, which cannot be directly matched, and the use is not flexible

Method used

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  • Power supply capable of converting high-power high-voltage constant-current input into constant-voltage output, and control method thereof
  • Power supply capable of converting high-power high-voltage constant-current input into constant-voltage output, and control method thereof
  • Power supply capable of converting high-power high-voltage constant-current input into constant-voltage output, and control method thereof

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Embodiment

[0076] Such as figure 1 As shown, this embodiment provides a high-power high-voltage constant-current input-to-constant-voltage output power supply. The high-power high-voltage constant-current input-to-constant-voltage output power supply is connected in series on the input line, including an input protection unit and a main conversion unit connected in sequence. unit, output energy storage unit, auxiliary power supply unit, control unit, sampling unit and isolated communication unit;

[0077] In this embodiment, the power input is constant current 1.5A, below 1000V, the output constant voltage is about 800V, and the maximum output power is 1200W;

[0078] The high-voltage constant current flows into the main conversion unit from the input protection unit and flows out from the auxiliary power supply unit. At the same time, the main conversion unit converts the high-voltage constant current into constant voltage and sends it to the output energy storage unit for energy storag...

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Abstract

The invention discloses a power supply capable of converting high-power high-voltage constant-current input into constant-voltage output, and a control method thereof. The power supply comprises an input protection unit, a main conversion unit, an output energy storage unit, an auxiliary power supply unit, a control unit, a sampling unit and an isolation communication unit; the input end of the input protection unit is connected with high-voltage constant-current power, the output end of the input protection unit is connected with the input end of the main conversion unit, the output end of the main conversion unit is connected with the output energy storage unit, and the output energy storage unit is provided with an energy storage capacitor; the input end of the auxiliary power supply unit is connected with the high-voltage constant-current electric bus and the output energy storage unit; the output end of the auxiliary power unit is connected with the control unit; the sampling unit is respectively connected with the high-voltage constant current, the main conversion unit and the output energy storage unit; and the isolation communication unit is provided with an isolated communication circuit for isolated communication transmission. The output power of a single module is improved, the problem that the output power of a traditional scheme is not large is solved, and the application occasion is wide.

Description

technical field [0001] The invention relates to the technical field of power supplies, in particular to a high-power high-voltage constant-current input-to-constant-voltage output power supply and a control method thereof. Background technique [0002] In the current field of high-voltage power transmission and distribution, there are mature high-voltage AC power transmission and distribution technologies, developing high-voltage DC constant-voltage power transmission and distribution technologies, and recently immature high-voltage DC constant-current power transmission and distribution technologies. High-voltage DC constant-current power transmission and distribution is especially suitable for use in harsh environments. In the entire power supply circuit, the current is almost the same, and the terminal power-taking equipment works in a stable state; while high-voltage DC constant-voltage power transmission and distribution in the entire power supply circuit, the voltage is...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02M3/156H02H3/10H02H3/20
CPCH02M3/156H02H3/10H02H3/207
Inventor 钱春建詹涛
Owner 广州宇曦电子科技有限公司
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