Wide Load Range Zvs Full-bridge Converter Research

As the development of the electronics technology , the consumers need the performance of the switching power supplies which used in the fields of telecommunication and power systems more and more excellent.First of all, this paper analyzes the general zero-voltage-switched, phase-shifted converters. To overcome the shortcoming existing in the PS converter, this paper presents a PS converter which has advantage of full zvs-range and reduced commuting inductor requirement by combining the technology of auxiliary net and commutating inductor. Second, the paper analyzes the converter system's structure feature in details and presents control strategy .The modularization of switching power supplies requires the paralleled DC/DC converters with active current sharing operating stable. This paper analyzed the current-sharing stability used in highest current method.Finally, this paper shows a power module especially designed as the battery charger(220Vdc/10A)for the power systems.