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Dual-active bridge clamping converter and control method thereof

A dual active bridge and converter technology, applied in control/regulation systems, DC power input conversion to DC power output, instruments, etc., can solve the problems of reducing current peak value and effective value, not realizing standards, increasing control difficulty, etc. , to achieve the effect of expanding the adjustment range, enhancing flexibility, realizing precise control and optimizing efficiency modulation

Pending Publication Date: 2021-11-09
SHANDONG JIANZHU UNIV +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Some literatures have proposed TPS control, which is similar to DPS but different from the two internal shifts; TPS can expand the range of soft switching to zero load and can effectively reduce the peak value and effective value of the current; since this control method has three Control variables greatly increase the difficulty of control, and currently there is no unified implementation standard

Method used

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  • Dual-active bridge clamping converter and control method thereof
  • Dual-active bridge clamping converter and control method thereof
  • Dual-active bridge clamping converter and control method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0044] This embodiment introduces a dual active bridge clamp converter.

[0045] The topology of the traditional dual active bridge converter is as follows figure 1 As shown, this embodiment improves the topology of the converter on the basis of this, and adds a clamping branch. The improved topology is as follows figure 2 shown.

[0046] Such as figure 2 A dual active bridge clamp converter shown includes a primary full bridge circuit, a secondary full bridge circuit, a transformer and a clamping branch arranged between the primary full bridge circuit and the secondary full bridge circuit, specifically The topology is set up as follows:

[0047] The primary-side full-bridge circuit includes a first capacitor branch, a first bridge arm, and a second bridge arm connected in parallel, and the first capacitor branch includes a first capacitor C connected in series. 11 and a second capacitor C 12 (here the first capacitor C 11 and a second capacitor C 12 The capacitive re...

Embodiment 2

[0053] This embodiment introduces a control method based on the dual active bridge clamp converter introduced in the first embodiment.

[0054] A control method for a dual active bridge clamp converter, comprising the following steps:

[0055] Calculate the phase shift between the bridge arms of the primary side full bridge circuit and the secondary side full bridge circuit;

[0056] Control the conduction of the switching tube, the first switching tube, the second switching tube, the third switching tube, the fourth switching tube, the fifth switching tube, the sixth switching tube, the seventh switching tube, and the eighth switching tube by phase shifting and off, calculate the current at the first input terminal of the transformer;

[0057] Based on the obtained current at the first input of the transformer, calculate the current stress per unit of the dual active bridge clamped converter, the transmitted power of the dual active bridge clamped converter and the per unit ...

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Abstract

The invention provides a dual-active-bridge clamping converter and a control method thereof. The dual-active-bridge clamping converter comprises a primary full-bridge circuit, a secondary full-bridge circuit, a transformer and a clamping branch, wherein the transformer and the clamping branch are arranged between the primary full-bridge circuit and the secondary full-bridge circuit; the clamping branch comprises a first clamping diode branch and a second clamping diode branch which are connected in parallel; the first clamping diode branch comprises a first clamping diode and a third clamping diode which are reversely connected in series, the second clamping diode branch comprises a second clamping diode and a fourth clamping diode which are reversely connected in series, and the positive electrode of the first clamping diode is connected with the negative electrode of the second clamping diode; the positive electrode of the third clamping diode is connected with the negative electrode of the fourth clamping diode; the clamping branch circuit further comprises a switch tube, one end of the switch tube is connected between the first clamping diode and the third clamping diode, and the other end of the switch tube is connected between the second clamping diode and the fourth clamping diode.

Description

technical field [0001] The disclosure belongs to the technical field of bidirectional DC converters, and in particular relates to a dual active bridge clamp converter and a control method thereof. Background technique [0002] The statements in this section merely provide background information related to the present disclosure and do not necessarily constitute prior art. [0003] Under the background of vigorously developing green energy power generation and energy saving and emission reduction technologies, energy storage technology has received more and more attention. In the field of new energy power generation, battery energy storage technology can stabilize the power fluctuations of wind power generation and photovoltaic power generation, improve the power quality of grid-connected wind farms and photovoltaic power stations, and enhance their system stability. Along with the development of battery energy storage, energy transmission systems have been continuously paid...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02M3/335
CPCH02M3/33584
Inventor 曹立霞张宗峰符奥田国锋张锐王海江
Owner SHANDONG JIANZHU UNIV
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