Title :
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
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;
Conference_Titel :
Applied Power Electronics Conference and Exposition, 2005. APEC 2005. Twentieth Annual IEEE
Conference_Location :
Austin, TX
Print_ISBN :
0-7803-8975-1
DOI :
10.1109/APEC.2005.1453142
