Title :
Efficiency improvement in modular DC/DC converters using unequal current sharing
Author :
Bartal, Peter ; Hamar, János ; Nagy, István
Author_Institution :
Dept. of Autom. & Appl. Inf., Budapest Univ. of Technol. & Econ., Budapest, Hungary
Abstract :
The paper presents a novel approach to efficiency optimization applied to modular DC/DC converters. It consists of using several identical converters in parallel, turning on just as many of them as needed and operating them with maximum efficiency, while leaving only one of them working in a suboptimal operating point. The conditions for switching on or off a converter are also investigated to obtain maximum overall efficiency. Notable improvement can be obtained in the entire load region, especially at light load.
Keywords :
DC-DC power convertors; circuit optimisation; switching convertors; modular DC-DC converters; suboptimal operating point; switching converter; unequal current sharing; Complexity theory; DC-DC power converters; Power capacitors; Switches; Voltage control; efficiency; intelligent agents; paralleled DC/DC converters;
Conference_Titel :
Power Electronics, Electrical Drives, Automation and Motion (SPEEDAM), 2012 International Symposium on
Conference_Location :
Sorrento
Print_ISBN :
978-1-4673-1299-8
DOI :
10.1109/SPEEDAM.2012.6264540
