This paper suggests a modified 11-level reduced switch inverter fed by photovoltaic (PV) array feeding standalone AC loads. Multilevel inverters (MLIs) have great influence in distributed power system due to their high power capability with reduced harmonic content. Among the various topologies of MLI, cascaded MLIs are widely adopted for PV applications since batteries charged by PV panels can serve as DC voltage sources for MLI. The PV system charges the batteries through a buck converter, controlled by a smart perturb and observe (P&O) maximum power point tracking (MPPT) technique. The perturb and observe MPPT described in this work is capable of not only extracting maximum power from the panel but also regulate the charging mechanism of the battery. This work also aims at enhancing the performance of existing reduced switch topology, which is having higher harmonic and switching complexity by adopting a structural change. This topology uses less number of controlled switches compared to the existing method which aids in reducing losses and switching complexity. In addition to that, with a reduced switch count, it can be configured and realized easily. The proposed work is successfully realized in Matlab/Simulink and hardware environment. The simulation and hardware results prove that proposed work is highly viable.
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April 2015
Research-Article
Investigation on a Modified 11-Level Cascaded Inverter Fed by Photovoltaic Array for Standalone Applications
R. Sridhar,
R. Sridhar
Department of EEE,
SRM University
,Chennai
603203, India
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S. Jeevananthan,
S. Jeevananthan
Department of EEE,
Pondicherry Engineering College
,Pondicherry
605014, India
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S. S. Dash,
S. S. Dash
Department of EEE,
SRM University
,Chennai
603203, India
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Kiran Vemula
Kiran Vemula
Department of EEE,
SRM University
,Chennai
603203, India
Search for other works by this author on:
R. Sridhar
Department of EEE,
SRM University
,Chennai
603203, India
S. Jeevananthan
Department of EEE,
Pondicherry Engineering College
,Pondicherry
605014, India
S. S. Dash
Department of EEE,
SRM University
,Chennai
603203, India
Kiran Vemula
Department of EEE,
SRM University
,Chennai
603203, India
Contributed by the Solar Energy Division of ASME for publication in the JOURNAL OF SOLAR ENERGY ENGINEERING: INCLUDING WIND ENERGY AND BUILDING ENERGY CONSERVATION. Manuscript received January 23, 2014; final manuscript received August 1, 2014; published online September 10, 2014. Assoc. Editor: Santiago Silvestre.
J. Sol. Energy Eng. Apr 2015, 137(2): 021002 (7 pages)
Published Online: September 10, 2014
Article history
Received:
January 23, 2014
Revision Received:
August 1, 2014
Citation
Sridhar, R., Jeevananthan, S., Dash, S. S., and Vemula, K. (September 10, 2014). "Investigation on a Modified 11-Level Cascaded Inverter Fed by Photovoltaic Array for Standalone Applications." ASME. J. Sol. Energy Eng. April 2015; 137(2): 021002. https://doi.org/10.1115/1.4028397
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