Design method of energy router DC voltage conversion circuit

A technology of DC voltage conversion and design method, which is applied in the direction of high-efficiency power electronic conversion, DC power input conversion to DC power output, output power conversion device, etc., which can solve the problems of complex design and many control variables, so as to improve conversion efficiency , reduce current consumption, and facilitate engineering design

Active Publication Date: 2020-08-11
SHANGHAI JIAO TONG UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] However, for the energy router DC voltage conversion circuit, the design is very complicated due to the large number of control variables. How to pr

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  • Design method of energy router DC voltage conversion circuit
  • Design method of energy router DC voltage conversion circuit
  • Design method of energy router DC voltage conversion circuit

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Embodiment Construction

[0048] The present invention will be further described below in conjunction with the embodiments and accompanying drawings, but the protection scope of the present invention should not be limited thereby.

[0049] see firstfigure 1 , figure 1 It is the system topology equivalent circuit diagram of the DC voltage conversion of the energy router of the present invention, which provides designers with an intuitive equivalent model of the DC voltage conversion of the energy router with extended phase-shift modulation, which is convenient for design, and this model is suitable for the entire work of the converter Range, D can be set arbitrarily in the range of 0~1 0 and D 1 .

[0050] A method for preparing an energy router DC voltage conversion circuit, the method comprising the following steps:

[0051] 1) Draw the DC voltage conversion circuit diagram of the energy router based on the extended phase shift modulation

[0052] The DC voltage conversion circuit (dual active bri...

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Abstract

The invention discloses a design method of an energy router DC voltage conversion circuit, and the design method is helpful for revealing the physical nature of an energy router DC voltage conversion-dual active bridge converter, and facilitates the comprehensive derivation, analysis and simplification of the control-output dynamics of different working modes, thereby avoiding the tedious numerical calculation required by control. The DC voltage conversion circuit designed by the invention is suitable for an energy router based on extended phase shift modulation, single phase shift modulation,double phase shift modulation and triple phase shift modulation. The method is simple in calculation, is high in model precision, is easy for practical engineering application, greatly improves the design efficiency of the DC voltage conversion of the energy router, reduces the current loss, and improves the DC voltage conversion efficiency.

Description

technical field [0001] The invention relates to a DC voltage conversion circuit for an energy router, in particular to a design method for a DC voltage conversion circuit for an energy router. Background technique [0002] With the development of power electronics technology, high-frequency isolated power conversion technology will be more and more applied to the power grid, becoming an important means to realize fast and flexible control in the power grid. The DC voltage conversion unit of the energy router based on the phase-shift modulation technology, that is, the Dual Active Bridge (DAB) converter has the advantages of high power density, fast dynamic response, easy realization of soft switching, and bidirectional flow of power. , It is popular in occasions such as uninterruptible power supplies, electric vehicles, and solid-state transformers. The common DAB converter modulation method is phase-shift modulation. A voltage square wave with relative phase shift is gener...

Claims

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Application Information

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IPC IPC(8): H02M3/335
CPCH02M3/33576H02M3/3353H02M1/0048Y02B70/10
Inventor 李国杰童安平汪可友
Owner SHANGHAI JIAO TONG UNIV
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