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Multi-input modular DC/DC converter

An input module and modular technology, applied in the field of converters, can solve problems such as poor expansion of high-gain converters, achieve the effects of low voltage and current stress of active devices, and reduce complexity

Pending Publication Date: 2020-03-27
GUANGDONG POWER GRID CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention provides a multi-input modular DC / DC converter to solve the problem of poor expansion of existing high-gain converters

Method used

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Examples

Experimental program
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Embodiment 1

[0034] Such as figure 1 As shown, a multi-input modular DC / DC converter includes an input module and a gain module, the input module includes a number of input ports, the gain module includes a number of gain units; the output of the input module is connected to the The input end of the above-mentioned gain module is electrically connected, and the increase of gain is realized through the reasonable configuration of the number of ports at the input end and the gain unit.

[0035] In the above scheme, the high boosting capability is achieved by using the reasonable configuration of the number of input ports of the input module and the gain units of the gain module. Each increase in the number of input ports or the number of gain units can improve the original basis by more than several times. Base gain.

[0036] The input module includes m input power sources U in1 , U in2 ...... U inm , m power switches S 1 , S 2 ... S m , m inductors L 1 , L 2 ......L m ;in:

[003...

Embodiment 2

[0052] Such as figure 2 As shown, a multi-input modular DC / DC converter includes an input module and a gain module, the input module includes a number of input ports, the gain module includes a number of gain units; the output of the input module is connected to the The input end of the above-mentioned gain module is electrically connected, and the increase of gain is realized through the reasonable configuration of the number of ports at the input end and the gain unit.

[0053] In the above scheme, the high boosting capability is achieved by using the reasonable configuration of the number of input ports of the input module and the gain units of the gain module. Each increase in the number of input ports or the number of gain units can improve the original basis by more than several times. Base gain.

[0054] The input module includes an input power supply U in1 , U in2 , U in3 and U in4 , power switch S 1 , S 2 , S 3 and S 4 , inductance L 1 , L 2 , L 3 and L ...

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Abstract

The invention relates to a multi-input modular DC / DC converter, which comprises an input module and a gain module, and is characterized in that the input module comprises a plurality of input end ports, and the gain module comprises a plurality of gain units; the output end of the input module is electrically connected with the input end of the gain module, and the gain is improved through reasonable configuration of the number of ports of the input end and the gain unit. High boosting capacity is realized by utilizing the number of input end ports of the input module and reasonable configuration of gain units of the gain module, and the basic gain can be increased by more than several times on the original basis when the number of the input end ports or the number of the gain units is increased each time; according to the multi-input modular DC / DC converter provided by the invention, the high boosting capacity is realized by utilizing the reasonable configuration of the number of theinput end ports of the input module and the gain units of the gain module, and the basic gain can be improved by more than several times on the original basis when the number of the input end ports orthe number of the gain units is increased each time.

Description

technical field [0001] The invention relates to the field of converters, in particular to a multi-input modularized DC / DC converter. Background technique [0002] In the prior art, there are few studies on DC / DC converters applied to DC grid interconnection and large-capacity and high-power confluence, and most of the converters have limited input ports and poor scalability. At the same time, the gain is low and the control The disadvantages of complex strategies make it limited in applications such as energy interconnection and unified offshore wind power full DC wind farm confluence. [0003] At present, there are mainly three types of converters to achieve high gain: one is to use switched resonant capacitors to achieve high gain through resonance, and at the same time reduce the voltage stress of power devices, but this method has a complex structure, requires more components, and has higher system losses. The second is to use coupled inductors to achieve high gain, but...

Claims

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Application Information

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IPC IPC(8): H02M3/155
CPCH02M3/155H02M1/0083
Inventor 刘崧武利会梁东明曾庆辉刘少辉王俊波李国伟李兰茵赖艳珊张殷
Owner GUANGDONG POWER GRID CO LTD
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