A New Non-Isolated Multi-Input DC-DC Converter with High Voltage gain and Low Average of Normalized Peak Inverse Voltage

Abstract

In this paper, a novel non-isolated multi-input DC-DC converter (MIC) with high voltage gain has been presented. The presented topology comprises of simple high gain units. The main merits of the proposed topology are continuous current of input sources and possibility of using input sources of different voltage-current characteristics. Duty cycle of each unit can be specified independently and the amount of desired output voltage can be achieved. This topology has a simple switching pattern and the switching frequency can be selected high as well. The number of input units can be increased thus the stress of the switches is decreased as the duty ratio can be selected lower for each unit. The proposed topology is also appropriate for renewable energy sources’ applications and in order to validate the performance of the aforementioned merits, two units of multi-input DC-DC converter topology has been simulated in PSCAD/EMTDC software. Simulation results confirm the valid performance of the proposed topology.