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Multi-port converter based on topology integration, control method and system

A converter, multi-port technology, used in control/regulation systems, output power conversion devices, conversion of DC power input to DC power output, etc., can solve the problems of too many switching devices and complex control methods, and achieve complexity Low, improve integration, reduce the effect of capacitance value

Pending Publication Date: 2021-07-30
HUAZHONG UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the current multi-port converters still have problems such as too many switching devices and complex control methods.

Method used

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  • Multi-port converter based on topology integration, control method and system
  • Multi-port converter based on topology integration, control method and system
  • Multi-port converter based on topology integration, control method and system

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Embodiment Construction

[0082] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0083] In addition, the characteristics, operations or characteristics described in the specification can be combined in any appropriate manner to form various embodiments. At the same time, the steps or actions in the method description can also be exchanged or adjusted in a manner obvious to those skilled in the art. Therefore, various sequences in the specification and drawings are only for clearly describing a certain embodiment, and do not mean a necessary sequence, unless otherwise stated that a certain sequence must be followed.

[0084] The serial numbers assigned to components in this docum...

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Abstract

The invention discloses a multi-port converter based on topology integration and a control method and system, and relates to the technical field of power electronics. The multi-port converter comprises a first bidirectional full-bridge circuit connected with a power grid; a second bidirectional full-bridge circuit which is connected with an isolated three-port converter and shares two switching devices with the first bidirectional full-bridge circuit; an uncontrolled rectification full-bridge circuit which is connected with an output load and is connected with the second bidirectional full-bridge circuit through a first high-frequency transformer; a third bidirectional full-bridge circuit which is connected with the storage battery and is connected with the second bidirectional full-bridge circuit through a second high-frequency transformer; a first boost circuit which is connected with a photovoltaic cell and a direct current bus capacitor; and a second boost circuit which is connected with an active power decoupling capacitor and shares a switching device with the first boost circuit. Through the topology integration method, the number of switching devices can be reduced, so that the hardware cost of the multi-port converter can be reduced, the size and the weight can be reduced, and the integration performance can be improved.

Description

technical field [0001] The invention belongs to the field of power electronics, and more specifically relates to a multi-port converter based on topology integration, a control method and a system. Background technique [0002] Since the first industrial revolution, the demand for energy in human society has been increasing, and a large amount of traditional energy, such as coal, natural gas, and oil, has been exploited and used, which has caused social problems such as the oil crisis and global warming. . All walks of life are beginning to realize that the unreasonable use of energy will bring great harm to human society. For the sustainable development of society, the development and utilization of renewable energy is of great significance. [0003] Renewable energy includes solar energy, wind energy, water energy, etc. Taking solar energy as an example, the principle of solar power generation is to use the "photovoltaic" effect of semiconductors to generate photovoltage...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02M3/335H02J1/10H02J3/38
CPCH02M3/33561H02M3/33584H02J1/10H02J3/381H02J2300/20H02J2300/24Y02E10/56
Inventor 陈宇徐天启康勇
Owner HUAZHONG UNIV OF SCI & TECH
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