Power Sharing in a Double-Input Buck Converter Using Dead-Time Control

Abstract

Multi-input converters are becoming important in various renewable energy applications like wind energy, fuel cell systems, photovoltaic systems, and hybrid electric vehicles. In this paper, it is shown that in a double-input buck converter the dead-time of the switch commands along with the two duty ratios will have a direct impact on the amount of current drawn from the sources/inputs. This dead-time is used as an additional control variable apart from the switch commands to meet the control objective of meeting a constant load demand when the source currents are varying which is very common in hybrid energy systems. Theoretical derivations agree well with the simulation results. The new control method has good dynamic response and improves the speed of the system.

Meeting Name

IEEE Energy Conversion Congress and Exposition (2009: Sep. 20-24, San Jose, CA)

Department(s)

Electrical and Computer Engineering

Keywords and Phrases

Additional Control; Buck Converters; Constant Loads; Control Methods; Control Objectives; Deadtime; Direct Impact; Duty Ratios; Fuel Cell System; Hybrid Electric Vehicle; Hybrid Energy System; Multi-Port; Multiinput; Photovoltaic Systems; Power Sharing; Renewable Energy Applications; Simulation Result; Source Currents; Wind Energy; Automobiles; Dynamic Response; Electric Vehicles; Energy Conversion; Fuel Cells; Wind Power; Dead-Time Control; Multi-Input Converter; Multi-Port Converter

International Standard Book Number (ISBN)

978-1424428939

International Standard Serial Number (ISSN)

2329-3721; 2329-3748

Document Type

Article - Conference proceedings

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 2009 Institute of Electrical and Electronics Engineers (IEEE), All rights reserved.

Publication Date

01 Sep 2009

Link to Full Text

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