LPPT Control of a Dual-Stage Grid Connected Multi-String Photovoltaic System

The objective of this paper is to implement the limited power point tracking (LPPT) control of a photovoltaic (PV) system with the multi–string configuration. Unlike the centralized or single–string configuration, the power sharing between different strings is an important concern for the multi–string configuration under the LPPT control. A suitable control scheme is developed to achieve the aforementioned power sharing. The methodology proposed is verified under both uniform irradiance and partial shading conditions.

[1]  Frede Blaabjerg,et al.  A Hybrid Power Control Concept for PV Inverters With Reduced Thermal Loading , 2014, IEEE Transactions on Power Electronics.

[2]  Andoni Urtasun,et al.  Limiting the power generated by a photovoltaic system , 2013, 10th International Multi-Conferences on Systems, Signals & Devices 2013 (SSD13).

[3]  Massimo Vitelli,et al.  Distributed maximum power point tracking of photovoltaic arrays: Novel approach and system analysis , 2008, IEEE Transactions on Industrial Electronics.

[4]  Marcelo A. Pérez,et al.  Experimental Validation of a Single DC Bus Cascaded H-Bridge Multilevel Inverter for Multistring Photovoltaic Systems , 2017, IEEE Transactions on Industrial Electronics.

[5]  Shyama P. Das,et al.  Dual multi-string PV topology fed three level grid connected inverter , 2014, 2014 IEEE Applied Power Electronics Conference and Exposition - APEC 2014.

[6]  J.L. Russi,et al.  DC-DC converters in a multi-string configuration for stand-alone photovoltaic systems , 2008, 2008 IEEE Power Electronics Specialists Conference.

[7]  D. Amorndechaphon,et al.  Modified grid-connected current source inverter for multi-string PV system , 2012, 2012 IEEE PES Innovative Smart Grid Technologies (ISGT).

[8]  Joung-Hu Park,et al.  A Fast PV Power Tracking Control Algorithm With Reduced Power Mode , 2013, IEEE Transactions on Energy Conversion.

[9]  V. Sarkar,et al.  Improved limited power tracking of a photovoltaic plant connected across voltage-controlled DC bus , 2015, 2015 IEEE IAS Joint Industrial and Commercial Power Systems / Petroleum and Chemical Industry Conference (ICPSPCIC).

[10]  Bidyadhar Subudhi,et al.  A Comparative Study on Maximum Power Point Tracking Techniques for Photovoltaic Power Systems , 2013, IEEE Transactions on Sustainable Energy.

[11]  Vaskar Sarkar,et al.  LPPT control of a photovoltaic system under partially shaded condition , 2016, 2016 First International Conference on Sustainable Green Buildings and Communities (SGBC).

[12]  Sung-Yeul Park,et al.  Power weakening control of the photovoltaic-battery system for seamless energy transfer in microgrids , 2013, 2013 Twenty-Eighth Annual IEEE Applied Power Electronics Conference and Exposition (APEC).

[13]  Jonathan W. Kimball,et al.  Frequency regulation of a microgrid using solar power , 2011, 2011 Twenty-Sixth Annual IEEE Applied Power Electronics Conference and Exposition (APEC).

[14]  Dragan Maksimovic,et al.  Active power control of photovoltaic power systems , 2013, 2013 1st IEEE Conference on Technologies for Sustainability (SusTech).

[15]  V. Sarkar,et al.  Limited power control of a single-stage grid connected photovoltaic system , 2015, 2015 Annual IEEE India Conference (INDICON).

[16]  Vaskar Sarkar,et al.  Variable rate LPPT based droop controlled operation of photovoltaic system for microgrid frequency regulation , 2016, 2016 IEEE International Conference on Power Electronics, Drives and Energy Systems (PEDES).

[17]  P.L. Chapman,et al.  Comparison of Photovoltaic Array Maximum Power Point Tracking Techniques , 2007, IEEE Transactions on Energy Conversion.