Power electronic transformer based on energy injection type direct AC-AC converter

A technology for power electronics and converters, applied in the field of transformers, can solve the problems of difficult control, low efficiency, complex results, etc., and achieve the effects of improving transmission efficiency, simple topology structure, and low cost

Inactive Publication Date: 2016-09-07
CENT SOUTH UNIV
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Problems solved by technology

The disadvantage of the thyristor phase-controlled inverter is that the output voltage frequency generally does not exceed one-third of the input, and the more phases of the input voltage,

Method used

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  • Power electronic transformer based on energy injection type direct AC-AC converter
  • Power electronic transformer based on energy injection type direct AC-AC converter
  • Power electronic transformer based on energy injection type direct AC-AC converter

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Embodiment Construction

[0051] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is only some embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0052] figure 1 A circuit structure diagram of a power electronic transformer based on an energy injection direct AC-AC converter provided by an embodiment of the present invention is shown, as shown in figure 1 As shown, the power electronic transformer based on the energy injection type direct AC-AC converter of this embodiment, the high-freque...

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Abstract

The invention discloses a power electronic transformer based on an energy injection type direct AC-AC converter. The power electronic transformer comprises a high-frequency transformer, a primary AC-AC converter topology module and a secondary AC-AC converter topology module. The primary AC-AC converter topology module and the secondary AC-AC converter topology module are in a symmetrical topology structure. The primary topology module is connected with the primary side of the high-frequency transformer. The secondary topology module is connected with the secondary side of the high-frequency transformer. According to the power electronic transformer, single-stage conversion and bidirectional transmission of the energy can be realized, the topology structure is simple, the conversion efficiency is high, the size is small, and the cost is low.

Description

technical field [0001] The invention relates to the technical field of transformers, in particular to a power electronic transformer based on an energy injection direct AC-AC converter. Background technique [0002] With the continuous development of society and economy, human beings' demand for energy is increasing day by day. With the continuous depletion of traditional fossil energy, the utilization of renewable energy is becoming more and more important. Although renewable energy has many advantages, most renewable energy has defects such as unstable power supply, discontinuity, and changes with climatic conditions. In order to solve this problem, it is necessary to study a bidirectional power electronic converter, which can control the bidirectional transmission of energy, and combine the energy storage device with the renewable energy generation unit to provide stable and continuous power. At the same time, this bidirectional power electronic converter can replace the...

Claims

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Application Information

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IPC IPC(8): H02M5/293H02M5/10
CPCH02M5/10H02M5/225H02M1/0058H02M1/0067Y02B70/10
Inventor 粟梅朱奇孙尧杨建赵梓亦马昂宁思捷张关关熊文静
Owner CENT SOUTH UNIV
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