Picture of person typing on laptop with programming code visible on the laptop screen

World class computing and information science research at Strathclyde...

The Strathprints institutional repository is a digital archive of University of Strathclyde's Open Access research outputs. Strathprints provides access to thousands of Open Access research papers by University of Strathclyde researchers, including by researchers from the Department of Computer & Information Sciences involved in mathematically structured programming, similarity and metric search, computer security, software systems, combinatronics and digital health.

The Department also includes the iSchool Research Group, which performs leading research into socio-technical phenomena and topics such as information retrieval and information seeking behaviour.

Explore

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.