Picture of neon light reading 'Open'

Discover open research at Strathprints as part of International Open Access Week!

23-29 October 2017 is International Open Access Week. The Strathprints institutional repository is a digital archive of Open Access research outputs, all produced by University of Strathclyde researchers.

Explore recent world leading Open Access research content this Open Access Week from across Strathclyde's many research active faculties: Engineering, Science, Humanities, Arts & Social Sciences and Strathclyde Business School.

Explore all Strathclyde Open Access research outputs...

Three-port DC-DC converter for stand-alone photovoltaic systems

Hu, Yihua and Xiao, Weidong and Cao, Wenping and Ji, Bing and Morrow, D. John (2014) Three-port DC-DC converter for stand-alone photovoltaic systems. IEEE Transactions on Power Electronics. ISSN 0885-8993

[img] PDF (Hu-etal-TPE-Three-Port-DC-DC-converter-for-stand-alone-photovoltaic-systems)
Hu_etal_TPE_Three_Port_DC_DC_converter_for_stand_alone_photovoltaic_systems.pdf - Accepted Author Manuscript

Download (1MB)

Abstract

System efficiency and cost effectiveness are of critical importance for photovoltaic (PV) systems. This paper addresses the two issues by developing a novel three-port DC-DC converter for stand-alone PV systems, based on an improved Flyback-Forward topology. It provides a compact single-unit solution with a combined feature of optimized maximum power point tracking (MPPT), high step-up ratio, galvanic isolation and multiple operating modes for domestic and aerospace applications. A theoretical analysis is conducted to analyze the operating modes followed by simulation and experimental work. The paper is focused on a comprehensive modulation strategy utilizing both PWM and phase-shifted control that satisfies the requirement of PV power systems to achieve MPPT and output voltage regulation. A 250 W converter was designed and prototyped to provide experimental verification in term of system integration and high conversion efficiency.