Adaptive Variable Switching Frequency Digital Controller Algorithm to Optimize Efficiency

Author

Al-Hoor, Wisam ; Abu-Qahouq, Jaber A. ; Huang, Lilly ; Batarseh, Issa

Author_Institution

Sch. of Electr. Eng. & Comput. Sci., Central Florida Univ., Orlando, FL

fYear

2007

fDate

27-30 May 2007

Firstpage

781

Lastpage

784

Abstract

An adaptive digital controller with maximum efficiency point tracking to optimize DC-DC converter switching frequency is presented in this paper. The adaptive-frequency-optimization (AFO) method changes the DC-DC converter switching frequency while tracking the converter minimum input power (maximum efficiency) point under variable conditions including variable load and variable input voltage. The AFO digital controller continuously finds the optimum switching frequency that result in the minimum total loss while converter parameters and conditions vary. In this paper, the AFO method is discussed analyzed and its digital control algorithm and experimental implementation are presented.

Keywords

DC-DC power convertors; adaptive control; digital control; switching convertors; DC-DC converter; adaptive digital controller; adaptive-frequency-optimization method; optimum switching frequency; point tracking; switching frequency digital controller algorithm; Adaptive control; Centralized control; DC-DC power converters; Digital control; Lighting control; Programmable control; Switching converters; Switching frequency; Switching loss; Voltage control;

fLanguage

English

Publisher

ieee

Conference_Titel

Circuits and Systems, 2007. ISCAS 2007. IEEE International Symposium on

Conference_Location

New Orleans, LA

Print_ISBN

1-4244-0920-9

Electronic_ISBN

1-4244-0921-7

Type

conf

DOI

10.1109/ISCAS.2007.378002

Filename

4252751