Analysis and design of phase-interleaving series-connected module-integrated converter for DC-link ripple reduction of multi-stage photovoltaic power systems
Article first published online: 2 FEB 2012
Copyright © 2012 John Wiley & Sons, Ltd.
Progress in Photovoltaics: Research and Applications
Volume 21, Issue 5, pages 1189–1203, August 2013
How to Cite
Jung, A.-Y., Park, J.-H. and Jeon, H.-J. (2013), Analysis and design of phase-interleaving series-connected module-integrated converter for DC-link ripple reduction of multi-stage photovoltaic power systems. Prog. Photovolt: Res. Appl., 21: 1189–1203. doi: 10.1002/pip.1260
- Issue published online: 20 JUL 2013
- Article first published online: 2 FEB 2012
- Manuscript Accepted: 23 NOV 2011
- Manuscript Revised: 22 NOV 2011
- Manuscript Received: 9 APR 2011
- Ministry of Knowledge Economy, Korea. Grant Number: No. 20104010100610
- series connected;
- module integrated;
- photovoltaic systems;
- building integrated;
- ripple reduction
Recently, installation of photovoltaic power systems such as building-integrated photovoltaic in urban area has been spotlighted in renewable energy engineering field, even at the expense of the performance degradation from partial shading. The efficiency degradation of maximum power point tracking (MPPT) performance can be compensated by a kind of power-conditioning system architecture such as module-integrated converters (MIC), which can handle the optimal-operation tracking for its own photovoltaic (PV) module. In case of a MIC with series-connected outputs, it is easy to obtain a high DC-link voltage for multiple stage PV power conditioning applications. However, switching ripple of the DC-link voltage also increases as number of the modules increases.
In this paper, as a solution for the ripple reduction, interleaved pulse width modulation-phase synchronizing method is applied to the PV MIC modules. The switching-ripple analysis of the MPPT power modules were performed and compared between the cases such as phase control or not. For the implementation of the phase control among the modules, Zigbee (XBee Pro, Digi International, Minnetonka, MN, USA) wireless communications transceiver and DSP (TMS320F28335, Texas Instruments, Dallas, TX, USA) series communications interface are utilized. Hardware prototype of the double-module boost-type 80-W MICs has been built to validate the DC-link voltage ripple reduction. Copyright © 2012 John Wiley & Sons, Ltd.