Fault-tolerant scaleable solar power bus architectures with maximum power tracking

Author

Siri, Kasemsan ; Conner, Kenneth A.

Author_Institution

Power & Analog Eng. Sect., Aerosp. Corp., El Segundo, CA, USA

Volume

2

fYear

2001

fDate

2001

Firstpage

1009

Abstract

An improved maximum power tracking (MPT) approach with dither signal injection is presented. It incorporates a “shared-bus” current-sharing method that can regulate many paralleled current-mode DC-DC converters. Through simulation, the approach yields nearly uniform current-sharing as well as reliable MPT performance. Utilizing the combined current-sharing and MPT approaches, three proposed architectures provide several advantages: (1) ease of system power expansion, (2) stable current-sharing, and (3) autonomous MPT during loss of output voltage regulation. Both stable amplitude and frequency of array voltage ripple are maintained by the robust MPT control

Keywords

DC-DC power convertors; fault tolerance; photovoltaic power systems; robust control; solar cell arrays; voltage control; array voltage ripple amplitude; array voltage ripple frequency; dither signal injection; fault-tolerant scaleable solar power bus architectures; loss of output voltage regulation; maximum power tracking; nearly uniform current-sharing; paralleled current-mode DC-DC converters regulation; robust control; shared-bus current-sharing method; simulation; stable current-sharing; system power expansion; Circuits; Control systems; DC-DC power converters; Fault tolerance; Frequency; Power systems; Pulse width modulation converters; Solar energy; Sun; Voltage control;

fLanguage

English

Publisher

ieee

Conference_Titel

Applied Power Electronics Conference and Exposition, 2001. APEC 2001. Sixteenth Annual IEEE

Conference_Location

Anaheim, CA

Print_ISBN

0-7803-6618-2

Type

conf

DOI

10.1109/APEC.2001.912490

Filename

912490