A High Voltage Gain Multiport Zeta-Zeta Converter for Renewable Energy Systems

Abstract

In this paper, a zeta-zeta coupled non-isolated multiport converter is proposed and implemented. This new dc-dc multiport converter facilitates the access of two renewable energy sources in the input side with a single output. Zeta converter topology facilitates high voltage gain with a reduced output voltage ripple. Multiport converters have become very prominent in the recent past due to the prevalent establishments of distributed energy resources. But in the research arena, there is no literature evidence for Zeta-Zeta converters used in multiport converters. This research work proposes a Zeta-Zeta multiport converter with reduced number of switches for renewable energy systems. The proposed converter is simulated in MATLAB/ Simulink environment and is also realized as a hardware prototype. The voltage gain and efficiency of the proposed circuit is compared with its counterpart multiport topologies. The simulation and hardware results show that the proposed topology is having a clear edge on its counter parts in voltage gain and efficiency.

Multi-Objective Optimization Phase-Shift Control Strategy for Dual-Active-Bridge Isolated Bidirectional DC-DC Converter

“…With the wide application of direct-current (DC) renewable power sources, DC loads, and storage equipment, DC power conversion systems (PCS) have considerable potential for engineering applications [1][2][3][4]. With the development of power electronics, isolated bidirectional DC-DC converters (IBDCs) have become popular for galvanic isolation, voltage conversion, and power transfer in DC PCS [5][6].…”