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Three-port DC-DC converter and control method thereof

A DC-DC and converter technology, applied in the field of three-port DC-DC converter and its control, can solve the problems of poor reliability, complicated regulation, large volume and weight, etc., and achieves strong reliability, simple regulation and simple circuit structure. Effect

Active Publication Date: 2019-08-16
HEBEI UNIVERSITY OF SCIENCE AND TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In view of this, the embodiment of the present application provides a three-port DC-DC converter and its control method to solve the problems of large volume and weight, poor reliability, and complex control of energy transfer devices existing in current photovoltaic power generation systems

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  • Three-port DC-DC converter and control method thereof
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  • Three-port DC-DC converter and control method thereof

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Embodiment Construction

[0029] In the following description, specific details such as specific system structures and technologies are presented for the purpose of illustration rather than limitation, so as to thoroughly understand the embodiments of the present application. It will be apparent, however, to one skilled in the art that the present application may be practiced in other embodiments without these specific details. In other instances, detailed descriptions of well-known systems, devices, circuits, and methods are omitted so as not to obscure the description of the present application with unnecessary detail.

[0030] In order to illustrate the technical solutions described in this application, specific examples are used below to illustrate.

[0031] The embodiment of the present application provides a three-port DC-DC converter, such as figure 1 As shown, the three-port DC-DC converter 100 may include: a buck-boost circuit 101 and a boost circuit 102 .

[0032] Wherein, the input end of ...

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Abstract

The invention is applicable to the technical field of power electronic energy conversion and provides a three-port DC-DC converter and a control method thereof. The converter includes a buck-boost circuit and a boost circuit. An input end of the buck-boost circuit is used for connecting a photovoltaic cell, a first output end of the buck-boost circuit is used for connecting a storage battery, anda second output end of the buck-boost circuit is used for outputting photovoltaic output power. A first input end of the boost circuit is used for receiving the photovoltaic output power outputted bythe second output end of the buck-boost circuit, a second input end of the boost circuit is used for receiving battery output power of the storage battery, and an output end of the boost circuit is used for connecting a DC load. The three-port DC-DC converter provided by the invention has a simple circuit structure, the regulation is relatively simple, the miniaturization design is facilitated, the reliability of power transmission is high, and the problems of large weight, poor reliability and complicated regulation of an energy transfer device in a current photovoltaic power generation system are solved.

Description

technical field [0001] The application belongs to the technical field of power electronic energy conversion, and in particular relates to a three-port DC-DC converter and a control method thereof. Background technique [0002] With the increasing shortage of fossil energy and the seriousness of environmental pollution, new energy has become more and more popular and has become a current research hotspot. New energy power generation is intermittent and random, that is, the output power is unstable, making it difficult to develop and utilize it on a large scale. Therefore, it is an important way to solve the current problem to equip energy storage equipment to adjust the power of renewable energy power supply system and realize continuous and stable power supply. [0003] Solar energy is a green renewable resource, and photovoltaic power generation is its main application form. The formation of photovoltaic power generation, storage batteries, DC loads and other photovoltaic ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02M3/158H02M3/156H02J7/35
CPCH02J7/35H02M3/156H02M3/1582Y02E10/56
Inventor 梁永春刘畅张明坤王鑫
Owner HEBEI UNIVERSITY OF SCIENCE AND TECHNOLOGY