Direct current transformer capable of implementing buck-boost conversion

A technology of DC transformer and buck-boost conversion, which is applied in the direction of converting DC power input to DC power output, instruments, and adjusting electrical variables, etc. It can solve the problems that DC transformers cannot simultaneously realize step-up and step-down conversion, and achieve easy promotion, Reasonable layout and simple structure

Inactive Publication Date: 2016-11-30
SHANGHAI JIAO TONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Moreover, the DC transformer cannot realize step-up and step-down conversion at the same time.

Method used

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  • Direct current transformer capable of implementing buck-boost conversion
  • Direct current transformer capable of implementing buck-boost conversion
  • Direct current transformer capable of implementing buck-boost conversion

Examples

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Embodiment Construction

[0050] The present invention will be described in detail below in conjunction with specific embodiments. The following examples will help those skilled in the art to further understand the present invention, but do not limit the present invention in any form. It should be pointed out that for those of ordinary skill in the art, a number of modifications and improvements can be made without departing from the concept of the present invention. These all belong to the protection scope of the present invention.

[0051] Figure 4 The schematic diagram of the structure of the first embodiment of the present invention is shown. In this embodiment, the DC transformer capable of realizing step-up and down conversion provided by the present invention is used to connect DC voltage sources with different voltage levels. dc1 And U dc2 , Can realize reverse polarity buck-boost conversion, where U dc1 And U dc2 Reverse polarity connection, including a first chain module and a second chai...

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Abstract

The invention provides a direct current transformer capable of implementing buck-boost conversion. The direct current transformer comprises a first chain type module and a second chain type module, wherein the first chain type module and the second chain type module are connected in parallel; one end of the first chain type module is connected with the anode connection end of a first power supply, and the other end of the first chain type module is connected with the cathode connection end of the first power supply; and one end of the second chain type module is connected with the cathode connection end of a second power supply, and the other end of the second chain type module is connected with the anode connection end of the second power supply. The direct current transformer further comprises an inductor L and an inductor La, wherein one end of the first chain type module is connected with the anode connection end of the first power supply by the inductor La, and the other end of the first chain type module is connected with the cathode connection end of the first power supply by the inductor L; and the other end of the second chain type module is connected with the anode connection end of the second power supply by the inductor L. Various direct current transformers provided by the invention can simultaneously implement buck-boost conversion; and the direct current transformer provided by the invention is simple in structure, reasonable in layout and easy to popularize.

Description

Technical field [0001] The invention relates to a direct current transformer, in particular to a direct current transformer capable of realizing step-up and down-voltage conversion. Background technique [0002] With the shortage of traditional energy sources and the intensification of environmental degradation, the utilization and development of renewable clean energy such as wind energy and solar energy have received more and more attention. New energy generation such as wind and solar energy is intermittent and random. The traditional grid structure and operation technology cannot adapt to large-scale renewable energy access. However, the multi-terminal DC transmission system and DC grid technology based on conventional DC and flexible DC are Effective means to solve this problem. Since there is no uniform standard for DC power grids, most of the existing DC lines operate at different voltage levels. In order to interconnect DC circuits of different voltage levels to form a D...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02M3/335
CPCH02M3/33569H02M1/007
Inventor 蔡旭游洪程
Owner SHANGHAI JIAO TONG UNIV
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