Title :
Stability mechanism analysis of input-series and output-parallel connected DC-DC converters
Author :
Li, Kai ; Sha, Deshang
Author_Institution :
Dept. of Comput. Sci. & Technol., Suqian Coll., Suqian, China
Abstract :
Input-series and output-parallel (ISOP) connected DC-DC converters are suitable for high voltage input and high current output applications by using low voltage rating switches. Cross feedback output current sharing (CFOCS) control can realize the power balance between each module easily and effectively. This paper describes the stability mechanism analysis of the CFOCS control based on small signal-model, and the Routh-Hurwitz criterion. The effectiveness of the analysis is verified by experimental results of a 150W ISOP system consisting of two two-transistor-forward (TTF) DC-DC converters.
Keywords :
DC-DC power convertors; circuit stability; electric current control; switches; CFOCS control; ISOP connected DC-DC converters; Routh-Hurwitz criterion; TTF DC-DC converters; cross feedback output current sharing control; input-series-output-parallel connected DC-DC converters; low voltage rating switches; power 150 W; power balance; small signal-model; stability mechanism analysis; two-transistor-forwardnDC-DC converters; Analytical models; Arrays; Equivalent circuits; Inductors; Polynomials; Stability criteria;
Conference_Titel :
Information Science and Technology (ICIST), 2012 International Conference on
Conference_Location :
Hubei
Print_ISBN :
978-1-4577-0343-0
DOI :
10.1109/ICIST.2012.6221617
