DocumentCode :
44953
Title :
Exact steady-state analysis in multiple-input converters applied with diverse time-sharing switching schemes
Author :
Liang Xian ; Youyi Wang
Author_Institution :
Sch. of Electr. & Electron. Eng., Nanyang Technol. Univ., Singapore, Singapore
Volume :
8
Issue :
5
fYear :
2015
fDate :
5 2015
Firstpage :
724
Lastpage :
734
Abstract :
Time-sharing switching (TSS) techniques are usually utilised in multiple-input converters (MICs) to manage power sharing among inputs as well as output-voltage regulation. The two most-commonly-used TSS schemes in practical MIC applications are trailing-edge modulation (TEM) and interleaved dual-edge modulation (IDEM), both of which containing abundant significant information on conduction sequence. Steady-state analysis and computation help understand MICs´ behaviour, being of high significance in both principal and practical researches. This study exhibits a general and exact methodology for computing and synthesising analytical expressions in a steady state of any kind of MIC topology, based upon analysis of segmented waveforms of common inductor current and output capacitor voltage. The derivation results are of high accuracy and generality, applicable for scenarios with arbitrary number of inputs in either continuous conduction mode or discontinuous conduction mode, and applied by either TEM-based or IDEM-based TSS schemes. Analytical and derivation details are addressed to the issues of multiple-input buck converters, along with general procedures established for other MICs topologies, for example, multiple-input buck-boost converters and multiple-input single-ended primary-inductor converters. Case study on a dual-input buck converter prototype, considering power dissipations and voltage drops on its components, is put forward for theoretical verification.
Keywords :
capacitors; inductors; modulation; power convertors; IDEM-based TSS schemes; TEM-based TSS schemes; capacitor voltage; continuous conduction mode; discontinuous conduction mode; diverse time-sharing switching; dual-input buck converter; inductor current; interleaved dual-edge modulation; multiple-input buck converters; multiple-input single-ended primary-inductor converters; output-voltage regulation; power dissipations; power sharing; steady-state analysis; time-sharing switching techniques; trailing-edge modulation; voltage drops;
fLanguage :
English
Journal_Title :
Power Electronics, IET
Publisher :
iet
ISSN :
1755-4535
Type :
jour
DOI :
10.1049/iet-pel.2013.0942
Filename :
7095646
Link To Document :
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