Comparative Analysis of Dual Source DC/DC converter Topologies for Improved Performance in Integration of Hybrid Energy Sources

Abstract

Hybrid Energy Source is used to combine the multiple energy source, in order to use their characteristics at their best. A power electronic converter is needed to interface these hybrid energy source with a load. In traditional methods various single input DC-DC power electronic converters are used but it has drawbacks such as, complex design, huge cost and less efficiency. Therefore, it is important to identify the opportunities to cut down the cost and to enhance the performance of the converter. One such possibility is to use dual source DC-DC converter that leads to reductions of filter size, cost and losses. Taking this into consideration, this study explores, the detailed software simulation of three different topologies of dual source DC-DC converters (Topology-I, Topology-II and Topology-III) in MATLAB/Simulink platform. All the three converters can work in buck, boost and bidirectional mode. Furthermore, a performance comparison of these converter topologies are made to check the feasible converter for electric vehicle application. The performance comparison shows that the Topology-III converters has less component count, improved efficiency, high voltage gain, high average output power and compact structure when compared with existing converter topology (I and II).