Analysis, design, and performance evaluation of droop current-sharing method

Author

Irving, Brian T. ; Jovanovic, Milan

Author_Institution

Power Electron. Lab., Delta Products Corp., Research Triangle Park, NC, USA

Volume

1

fYear

2000

fDate

6/22/1905 12:00:00 AM

Firstpage

235

Abstract

The droop current sharing method is analyzed, and a general design procedure is proposed. It is shown that the current-sharing accuracy of N+1 power supplies is a function of the output-voltage set-point accuracy, the slope of the output-voltage droop, and gains of the control loop. It was found that to achieve a current sharing accuracy of 10% the output voltage of the paralleled power supplies needs to be set within 0.35%. The accuracy of the design procedure was compared against measured results of three power supplies operating in parallel

Keywords

PWM power convertors; power supplies to apparatus; N+1 power supplies; control loop gains; design procedure; droop current-sharing method; output-voltage set-point accuracy; paralleled power supplies; performance evaluation; Frequency; Laboratories; Performance analysis; Power electronics; Power generation; Power measurement; Power supplies; Power system analysis computing; Power system dynamics; Voltage control;

fLanguage

English

Publisher

ieee

Conference_Titel

Applied Power Electronics Conference and Exposition, 2000. APEC 2000. Fifteenth Annual IEEE

Conference_Location

New Orleans, LA

Print_ISBN

0-7803-5864-3

Type

conf

DOI

10.1109/APEC.2000.826110

Filename

826110