Title :
Adaptive step-size digital controller for switching frequency auto-tuning
Author :
Qahouq, Jaber A Abu ; Hoor, Wisam Al ; Mikhael, Wasfy ; Huang, Lilly ; Batarseh, Issa
Author_Institution :
Dept. of Electr. & Comput. Eng., Univ. of Alabama, Tuscaloosa, AL
Abstract :
A switching frequency auto-tuning digital controller for a power converter with adaptive step-size is presented in this paper. The controller automatically tracks and finds the switching frequency of a power converter in order to achieve highest power conversion efficiency under variable conditions and load. The adaptive controller utilizes a proposed adaptive variable-step-size function to improve the convergence speed and convergences error. The auto-tuning controller with the proposed adaptive step-size function is discussed and verified in this paper.
Keywords :
adaptive control; convergence; digital control; power control; power convertors; adaptive controller; adaptive step-size digital controller; auto-tuning controller; convergence speed; power converter; switching frequency auto-tuning; Adaptive control; Automatic control; Convergence; Digital control; Digital-to-frequency converters; Error correction; Power conversion; Programmable control; Switching converters; Switching frequency;
Conference_Titel :
Circuits and Systems, 2008. ISCAS 2008. IEEE International Symposium on
Conference_Location :
Seattle, WA
Print_ISBN :
978-1-4244-1683-7
Electronic_ISBN :
978-1-4244-1684-4
DOI :
10.1109/ISCAS.2008.4541992
