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Intelligent energy system based on power electronic transformer

A power electronics and smart energy technology, applied in electrical components, circuit devices, photovoltaic power generation, etc., to achieve the effect of optimizing the charging and discharging process, good controllability, and improved safety

Inactive Publication Date: 2019-12-03
启东沃太新能源有限公司
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  • Abstract
  • Description
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AI Technical Summary

Problems solved by technology

[0004] The present invention provides a smart energy system based on power electronic transformers, which has the advantages of energy sharing and bidirectional flow of information between medium and low voltage power grids and traditional large power grids, and solves the technical problems mentioned in the background technology

Method used

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Embodiment Construction

[0015] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0016] see Figure 1-2 , a smart energy system based on power electronic transformers, including power electronic transformers, AC / DC converters, AC / AC converters, DC / AC converters, DC / DC converters, distributed power sources such as photovoltaics, electric vehicles, Energy storage system, DC load, AC load, and various AC generators; the energy storage system is electrically connected to the DC / AC converter, and the DC / AC converter is electrically connected to...

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Abstract

The invention relates to the field of power intelligent energy systems and discloses an intelligent energy system based on a power electronic transformer, which comprises a power electronic transformer, an AC / DC converter, an AC / AC converter, a DC / AC converter, a DC / DC converter, a photovoltaic and the like distributed power supply, an electric automobile, an energy storage system, a DC load, an AC load and various AC generators. According to the intelligent energy system based on the power electronic transformer disclosed in the invention, the power electronic transformer module is formed bythe AC / DC converter, a two-way DC / DC converter and the AC / DC converter, the power electronic transformer can thus be used for switching among four states of DC low voltage, AC low voltage, DC high voltage and AC high voltage, and compared with the traditional transformer which is only suitable for transmission of single-frequency and one-way voltage, the power electronic transformer can be almostsuitable for voltage two-way transmission under all conditions, frequency and voltage conversion is very flexible, and fault transmission at the two ends of the transformer can be effectively blocked.

Description

technical field [0001] The invention relates to the field of electric smart energy systems, in particular to a smart energy system based on power electronic transformers. Background technique [0002] The smart energy system needs the support of a series of energy infrastructure and advanced information and communication technology. It is necessary to innovate key technologies and improve technical feasibility, but also strive to reduce costs and improve economic feasibility. To achieve these goals, technical Innovation, the key technologies related to smart energy systems mainly include power electronic transformers, energy routers, distributed power supply equipment, energy storage technologies, etc. [0003] The main function of the traditional transformer is voltage transformation and isolation, which has a single function and has a series of problems. For example, the saturation of the iron core will generate harmonics, which will cause a large excitation inrush current...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/06H02J3/38H02J3/32
CPCH02J3/06H02J3/381H02J3/32Y02E10/56
Inventor 裴皓杨帆曹杰司静
Owner 启东沃太新能源有限公司
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