Input voltage sensorless average current control technique for high-power-factor boost rectifiers operated in discontinuous conduction mode

Author

Ghosh, Rajesh ; Narayanan, G.

Author_Institution

Dept. of Electr. Eng., Indian Inst. of Technol., Bangalore

Volume

2

fYear

2005

fDate

6-10 March 2005

Firstpage

1145

Abstract

A simple, low-cost analog controller is proposed for average current mode control of high-power-factor boost rectifiers operated in the discontinuous conduction mode (DCM). The current shaping is based on comparison of the input current with a suitably generated periodic nonlinear carrier. The controller does not need input voltage sensing, error amplifier in the current-shaping loop and/or any multiplication/division operation. The performance of the proposed controller is comparable to those of existing schemes. The controller may be fabricated into a single integrated circuit. A 600 W rectifier is simulated in MATLAB/SIMULINK. The control concept is experimentally validated on a 600 W laboratory prototype

Keywords

AC-DC power convertors; PWM power convertors; cost reduction; electric current control; electric sensing devices; mathematics computing; power amplifiers; power factor; power integrated circuits; rectifying circuits; 600 W; AC-DC power convertors; MATLAB/SIMULINK; PWM power convertors; analog controller; cost reduction; current shaping; current-shaping loop; discontinuous conduction mode; error amplifier; integrated circuit; multiplication-division operation; power-factor boost rectifiers; sensorless average current control; voltage sensing; Circuit simulation; Current control; Error correction; Laboratories; MATLAB; Operational amplifiers; Prototypes; Rectifiers; Sensorless control; Voltage control;

fLanguage

English

Publisher

ieee

Conference_Titel

Applied Power Electronics Conference and Exposition, 2005. APEC 2005. Twentieth Annual IEEE

Conference_Location

Austin, TX

Print_ISBN

0-7803-8975-1

Type

conf

DOI

10.1109/APEC.2005.1453142

Filename

1453142