16-08-2012, 04:44 PM
Multi-Input DC/DC Converter Based on the Multiwinding Transformer for Renewable Energy Applications
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ABSTRACT
The objective of this paper is to propose an innovative multi-input dc/dc converter, which is based on the concept of the transformer flux additivity. Instead of combining input dc sources in the electric form, the proposed converter combines input dc sources in magnetic form by adding up the produced magnetic flux together in the magnetic core of the coupled transformer. A two-input current-fed full-bridge dc/dc converter with phase-shifted pulse width-modulation (PWM) control is proposed in this paper to realize the proposed idea. With the phase-shifted pulse width-modulation (PWM) control, the proposed Converter can draw power from two different dc sources and deliver it to the load individually and simultaneously. The output voltage regulation and power flow control can be achieved by the phase-shifted PWM control.