Title :
Research on variable low voltage high current DC/DC converter
Author :
Ji, LI ; Yan, Xing ; Yingxi, LIAO
Author_Institution :
Nanjing Univ. of Aeronaut. & Astronaut.
Abstract :
An improved dual-forward converter topology with novel interleaving control is proposed. A current sensor for the primary current of transformers is shared by the interleaved forward converters. The current sensor serves the transformers alternately and the sensed current is compared with a common reference to generate PWM signal with current sharing. The PWM pulse controls the interleaved converters in parallel alternately and exact interleaving achieved, and the construction of the converter is simple with excellent noise immunity. The operating principle of the interleaved converter, the interleaving and current sharing performance influenced by parameter tolerance of the transformer and inductor are analyzed in detail. The key points of design are presented. Experimental results are given to verify the analysis
Keywords :
DC-DC power convertors; PWM power convertors; electric sensing devices; transformers; DC-DC converter; PWM pulse control; current sensor; current sharing performance; inductor; interleaved forward converter; noise immunity; transformer; AC generators; DC-DC power converters; Inductors; Interleaved codes; Low voltage; Pulse transformers; Pulse width modulation; Pulse width modulation converters; Signal generators; Topology;
Conference_Titel :
Electrical Machines and Systems, 2005. ICEMS 2005. Proceedings of the Eighth International Conference on
Conference_Location :
Nanjing
Print_ISBN :
7-5062-7407-8
DOI :
10.1109/ICEMS.2005.202734