The analysis of DC-DC converter topologies based on stackable voltage elements

Abstract

In this paper, a method for generating nonisolated dc/dc converter topologies is summarized. This method utilizes the stackable voltage stiff elements in a dc/dc converter and arranges them to create new usable voltage levels. By defining the input and output for different voltage stiff elements, a comprehensive set of converters can be created. The canonical first order switching cell, along with a proposed third order switching cell, are used to help analyze the first and third order converter topologies. Detailed analysis is provided using the two switching cells. Finally, transformer-less multiple-inputs converters are also analyzed using both the two switching cells and the stackable voltage element concept.Index Terms-Canonical switching cell, third order switching cell, stackable voltage elements.

Unified Approach for Synthesis and Analysis of Non-Isolated DC-DC Converters

“…Much effort has been devoted towards the development of techniques for synthesizing DC-DC converters over the last five decades . Techniques for synthesizing two-state or single active switch DC-DC converters [1][2][3][4][5][6][7][8][9][10][11][12] and those for synthesizing multiple-switch, multiple-inductor converters [13][14][15][16][17][18][19][20][21][22][23][24][25][26][27][28][29] have been developed. The synthesis techniques fall into two broad groups: transformational [1,[3][4][5][6][7][8][9][10][11][12][13][14][15][16][18][19][20][21][22]…”

“…The synthesis techniques fall into two broad groups: transformational [1,[3][4][5][6][7][8][9][10][11][12][13][14][15][16][18][19][20][21][22][23] and analytical [2,17]. The transformational techniques are further categorized into: duality principle [6,7], bilateral inversion [2,6,7], paralleling and cascading [2,8,13,16,[18][19][20][21][22][23], stacking [18,20,21,23], extension of the canonical switching cell [1,4,[5][6][7], rules based [3,19,21,…”

“…The transformational techniques are further categorized into: duality principle [6,7], bilateral inversion [2,6,7], paralleling and cascading [2,8,13,16,[18][19][20][21][22][23], stacking [18,20,21,23], extension of the canonical switching cell [1,4,[5][6][7], rules based [3,19,21,23], graphical [3], layer and graft schemes [10][11][12] and systematic rearrangement of the three-and five-element circuits [3,15,16]. Analytical techniques to obtain steady-state input-output voltage and current gains include those that treat converters or converter cells as three-port terminal devices [5-7, 14-15, 20], one that treated a third-order cell as a four-port device [20] and those based on conventional analytical techniques [1-2, 9-12, 16-18]. The analytical technique in [17] builds on that in [2].…”