Voltage-offset resistive control for Dc-Dc converters in photovoltaic applications

Katherine A. Kim, Ran M. Li, Philip T Krein

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Photovoltaic (PV) systems must be able to maintain stable operation near the maximum power point (MPP) regardless of environmental conditions. Voltage-offset resistive control (VRC) exhibits inherently low sensitivity to irradiance changes and supports effective inner-loop control to maintain MPP operation. Small- and large-signal analysis show that VRC employed with a boost converter is stable for PV applications. VRC is tested on an experimental setup using a digital controller, PV boost converter, and dc-link load. Irradiance and control parameter step responses are observed through simulated and experimental results. VRC exhibits stable and fast transient response. Traditional and VRC maximum power point tracking (MPPT) methods that utilize sample-and-hold operation are compared through simulation. The fractional open-circuit voltage VRC and MPP-current-based VRC methods are identified as effective, simple control solutions for PV systems that seek to maintain high efficiency under irradiance transients.

Original languageEnglish (US)
Title of host publicationAPEC 2012 - 27th Annual IEEE Applied Power Electronics Conference and Exposition
Pages2045-2052
Number of pages8
DOIs
StatePublished - Apr 30 2012
Event27th Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2012 - Orlando, FL, United States
Duration: Feb 5 2012Feb 9 2012

Publication series

NameConference Proceedings - IEEE Applied Power Electronics Conference and Exposition - APEC

Other

Other27th Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2012
CountryUnited States
CityOrlando, FL
Period2/5/122/9/12

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

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  • Cite this

    Kim, K. A., Li, R. M., & Krein, P. T. (2012). Voltage-offset resistive control for Dc-Dc converters in photovoltaic applications. In APEC 2012 - 27th Annual IEEE Applied Power Electronics Conference and Exposition (pp. 2045-2052). [6166103] (Conference Proceedings - IEEE Applied Power Electronics Conference and Exposition - APEC). https://doi.org/10.1109/APEC.2012.6166103