Title :
Steep conversion ratio buck converter based on a switched coupled-inductor cell
Author :
Berkovich, Y. ; Axelrod, B.
Author_Institution :
Holon Inst. of Technol., Holon, Israel
Abstract :
By replacing the input input inductor of buck converter with a cell formed by a coupled inductor and one diode, a new converter with low voltage ratio is obtained. The energy accumulated in the leakage inductance is transferred in a non-oscillatory manner to the load, thus avoiding a voltage overstress across the transistor. The DC gain expression and experimental results show its dependency on the coupling coefficient of the coupled inductor k, the turns ratio n, and the load.
Keywords :
power convertors; power inductors; DC gain expression; buck converter; coupled inductor; coupling coefficient; input input inductor; leakage inductance; steep conversion ratio; switched coupled-inductor cell; voltage overstress; Automation; Buck converters; Coupling circuits; Electromagnetic interference; Inductance; Inductors; Power electronics; Switches; Switching frequency; Voltage; DC-DC power conversion;
Conference_Titel :
Power Electronics Electrical Drives Automation and Motion (SPEEDAM), 2010 International Symposium on
Conference_Location :
Pisa
Print_ISBN :
978-1-4244-4986-6
Electronic_ISBN :
978-1-4244-7919-1
DOI :
10.1109/SPEEDAM.2010.5542050
