Title :
New PWM switched-mode converter topologies
Author :
Hua, Gui-Chao ; Huang, Shi-Peng
Author_Institution :
Dept. of Electr. Eng., Zhejiang Univ., Hangzhou, China
Abstract :
Two augmented switching cells are proposed from which four novel topologies can be derived: an augmented buck converter, and augmented boost converter, a novel switching power amplifier, and a novel switching controlled rectifier. The augmented buck and the augmented boost converters realize higher step-down and step-up ratios, respectively, under a given switch duty ratio by proper design of the turn ratios of the transformer and coupled inductor. The switching power amplifier achieves four-quadrant output by the use of two bidirectional current switches and a single power supply, while the inverse converter can be used as a switching controlled rectifier. The experimental verification of the power amplifier is presented.<>
Keywords :
power amplifiers; power convertors; pulse width modulation; rectifying circuits; switching circuits; PWM switched-mode converter topologies; augmented boost converter; augmented buck converter; augmented switching cells; bidirectional current switches; inverse converter; switching controlled rectifier; switching power amplifier; Buck converters; Inductors; Power amplifiers; Power supplies; Pulse width modulation; Pulse width modulation converters; Rectifiers; Switches; Switching converters; Topology;
Conference_Titel :
Power Electronics Specialists Conference, 1988. PESC '88 Record., 19th Annual IEEE
Conference_Location :
Kyoto, Japan
DOI :
10.1109/PESC.1988.18128
