Step-Up Current-Source Partial Power Converter for PV Systems

PV systems are widely used and widely accepted worldwide. Conversion stage efficiency is a critical criterion in selecting PV converters. In order to process PV power in an efficiency way with less cost, this work presents a step-up current source dual active bridge (DAB) partial power converter (PPC) for PV applications. The proposed configuration works as input parallel output series (IPOS) structure, which helps in reducing input current ripple, component size and cost. IPOS structure is convenient for PV application step-up ability, which is common requirements for different PV applications such as grid tied PV applications. The current source dual active bridge (DAB) with its two bidirectional switches and presented modulation allows soft switching of all semiconductors under wide load conditions. Maximum power point Tracking is implemented to track the maximum power of the PV modules by controlling the phase-shift of the converter. This abstract includes the theoretical and simulation analysis, while deep system analysis and more comparative studies will be included in the final version.