Switched inductor two-quadrant DC/DC converter with fuzzy logic control

Abstract

Classical DC/DC converters usually consist of inductors and capacitors such as buck converter, boost converter, buck-boost converter, Luo-Converters and Cuk-Converter. Because all classical converters consist of capacitors and inductors, they have big size and low power density. The switched-inductor has been successfully employed in DC/DC converters and opened the way to build converters with high power density. For example, Professor John G. Kassakian of MIT designed a new power supply system for the future car in the 21st century (see IEEE Spectrum, p.22-7, 1996). The heart of this system is a two-quadrant DC/DC converter operating the conversion between +42 V and +14 VDC. The authors describe this converter and its operation and fuzzy logic control.