Abstract
A novel modified bridge-type dual input DC-DC converter, which is proficient for integrating distinct V-I characteristic sources such as solar-PV, wind, etc., and storages including battery, ultracapacitor, fuel cell, etc., is proposed in this paper. Three modes of operations such as boost, buck, and buck-boost are possible using the same structure of the converter, and the converter can operate even with the failure of any one of the input energy sources to deliver power to the load. A software simulation and experimental realization of the converter have been carried out for the buck, boost, and buck-boost operations. The voltage and current stress analysis of the power switches available in the converter have been carried out for the better selection of power switches. A simple power control strategy is proposed for the steady state, and dynamic performance analysis of the converter and performance comparison with existing converter topologies have been carried out based on the different parameters like duty ratio, efficiency, etc. The performance comparison shows that the proposed converter has high voltage gain, low voltage stress, reduced part counts and high efficiency.
Highlights
In the current scenario, the demand for conventional petrochemical energy resources is drastically reducing due to their scarcity in nature and the pollution caused by them
The inductor is charged by a voltage of (V1 + V2 − V0 ), i.e., 110 V for d3 and it is discharged with a voltage of (−V0 ), i.e., −50 V, for the rest of the period
For d3, the inductor is charged by 160 V (i.e., voltage 1 (V1) + V2 ) and it is discharged by a voltage of −240 V
Summary
The demand for conventional petrochemical energy resources is drastically reducing due to their scarcity in nature and the pollution caused by them. To achieve a highly reliable and clean electric power generation system, hybridization of such renewable and non-conventional energy sources is essential. The idea of MIC to integrate different input energy sources for electric vehicle application is discussed in [14,15,16,17,18,19]. The design and control of an MIC to regulate the output voltage from different sources is proposed in [23]. The paper [26] proposes a bidirectional multi input converter for fuel cell/EV application. Such converter is not suitable for renewable applications like solar-PV.
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