Record Details

Exact Maximum Power Point Tracking of Grid-Connected Partially Shaded PV Source Using Current Compensation Concept

DSpace at IIT Bombay

View Archive Info
 
 
Field Value
 
Title Exact Maximum Power Point Tracking of Grid-Connected Partially Shaded PV Source Using Current Compensation Concept
 
Creator SHARMA, P
AGARWAL, V
 
Subject Current compensation
distributed maximum power point tracking (DMPPT)
partial shading
photovoltaic (PV) module
resonant pulse-based maximum power point tracking (MPPT)
DC CONVERTER CONNECTION
PHOTOVOLTAIC MODULES
SYSTEM
ARRAY
 
Description Under partially shaded conditions, series connection of photovoltaic (PV) modules results in the flow of lowest current in the string corresponding to the most shaded module, reducing the overall power output. Power output can be maximized by incorporating module-level "distributed" maximum power point tracking (DMPPT) wherein the current of each module is compensated by regulating its voltage at the respective maximum power point (MPP) value by connecting a dc-dc converter in parallel. Existing current compensation schemes are either too complex or inaccurate. This paper proposes a novel DMPPT scheme using current compensation, which is simple to implement and yet provides an accurate compensation, resulting in exact maximum power point tracking (MPPT). In the proposed scheme, each PV module is resonated through a special arrangement in the shunt-connected flyback dc-dc converter. The secondary-side diode in the flyback converter is replaced by a power MOSFET with an antiparallel diode. The converter operates in two modes: resonant MPPT mode and normal flyback mode. An intelligent controller tracks the MPP of the modules while they resonate. An output switch decouples the PV source from the grid momentarily, while the MPP is tracked. All the results of this work, including experimental validation, are presented.
 
Publisher IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
 
Date 2014-12-29T04:29:55Z
2014-12-29T04:29:55Z
2014
 
Type Article
 
Identifier IEEE TRANSACTIONS ON POWER ELECTRONICS, 29(9)4684-4692
0885-8993
1941-0107
http://dx.doi.org/10.1109/TPEL.2013.2285075
http://dspace.library.iitb.ac.in/jspui/handle/100/17079
 
Language English