Single phase 9 level grid connected inverter for photovoltaic applications

Chamarthi, Phanikumar; Agarwal, Vivek

doi:10.1109/pedg.2013.6785631

Cited by 7 publications

(4 citation statements)

References 11 publications

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“…In [77] an H-bridge multilevel inverter topology is suggested, with enhanced conversion efficiency from DC to AC storage of battery power to operate 24/7. A grid-connected nine level inverter topology using a low potential PV module to produce high voltage AC has been suggested in [78]. For the implementation of active power filter having the capability of power injection and static var compensator (SVC).…”

Section: Miscellaneous Topologiesmentioning

confidence: 99%

“…In [81,82] different inverter topologies such as MOSFET inverter topology with H6-type technique, enhanced H6 topology, HB having a capacitor divider feature, HB designed with control circuit generation, H5 with optimized technology (oH5), grid connected multilevel inverter topology, high reliable and efficient (HRE) inverter topology, hybrid zero voltage rectifier topology (HR-ZVR), grid connected multifunction inverter topology, virtual DC bus topology, buck-boost converter, buck converter, boost converter, and related topologies for solar PV grid-connected applications were addressed. Comparison of numerous transformerless single-phase inverter topologies have been presented in [76][77][78][79][80][81][82], which are applied in grid-connected PV solar systems.…”

Section: Miscellaneous Topologiesmentioning

confidence: 99%

“…In comparison with FB-derived topologies because of the higher complexity, with ratings over 10 kW (mini-central) three-phase inverters these topologies are typically used. Besides, in the range of hundreds of kW, i.e., high power (central inverter), where multilevel inverters are too significant, these topologies are also very attractive [43,[76][77][78][79][80][81][82].…”

Section: Npc-derived Inverter Topologies: An Overviewmentioning

confidence: 99%

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A Review on Recent Advances and Future Trends of Transformerless Inverter Structures for Single-Phase Grid-Connected Photovoltaic Systems

et al. 2018

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Abstract:The research significance of various scientific aspects of photovoltaic (PV) systems has increased over the past decade. Grid-tied inverters the vital elements for the effective interface of Renewable Energy Resources (RER) and utility in the distributed generation system. Currently, Single-Phase Transformerless Grid-Connected Photovoltaic (SPTG-CPV) inverters (1-10 kW) are undergoing further developments, with new designs, and interest of the solar market. In comparison to the transformer (TR) Galvanic Isolation (GI)-based inverters, its advantageous features are lower cost, lighter weight, smaller volume, higher efficiency, and less complexity. In this paper, a review of SPTG-CPV inverters has been carried out. The basic operational principles of all SPTG-CPV inverters are presented in details for positive, negative, and zero cycles. A comprehensive analysis of each topology has been deliberated. A comparative assessment is also performed based on weaknesses, strengths, component ratings, efficiency, total harmonic distortion (THD), semiconductor device losses, and leakage current of various SPTG-CPV inverters schemes. Typical PV inverter structures and control schemes for grid connected three-phase system and single-phase systems are also discussed, described, and reviewed. Comparison of various industrial grids-connected PV inverters is also performed. Loss analysis is also performed for various topologies at 1 kW. Selection of appropriate topologies for their particular application is thoroughly presented. Then, discussion and forthcoming progress are emphasized. Lastly, the conclusions are presented. More than 100 research publications on the topic of SPTG-CPV inverter topologies, configurations, and control schematics along with the recent developments are thoroughly reviewed and classified for quick reference.

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Section: Miscellaneous Topologiesmentioning

confidence: 99%

Section: Miscellaneous Topologiesmentioning

confidence: 99%

Section: Npc-derived Inverter Topologies: An Overviewmentioning

confidence: 99%

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A Review on Recent Advances and Future Trends of Transformerless Inverter Structures for Single-Phase Grid-Connected Photovoltaic Systems

et al. 2018

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“…In [13] author had proposed "n" level multi level inverter topology, the proposed topology contains large number of bidirectional switches and more number of input DC sources too. The author in [14,15] had proposed 9 level inverter topology which contains less number of bidirectional devices with inherent boosting capability but this topology requires multiple input DC sorces as input. The " n " level multi-pole multilevel diode clamped inverter [16] had been proposed to generate n levels at the output of the inverter with less number of input DC capacitors.…”

Section: Introductionmentioning

confidence: 99%

A new couple inductor based 9-level inverter with reduced number of switches for standalone /grid connected solar PV systems

Chamarthi

Agarwal

2014

2014 IEEE 40th Photovoltaic Specialist Conference (PVSC)

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In this paper, a single phase coupled inductor based 9 level diode clamped inverter is proposed for stand alone and grid connected solar PV applications. The proposed inverter is capable of generating 9 voltage levels with one DC source. It has a lower part count compared to the conventional nine level inverter topologies. The presence of the high frequency coupled inductor in the output power path provides natural protection against shoot through problems. Hence dead band requirements in the power switches are eliminated. Because of lesser components in the power circuit, the system size is considerably reduced. The proposed inverter topology contains less number of input capacitors and voltage stress on the devices is less. Due to the presence of fewer components, the overall efficiency of the system is high. Due to 9 levels in the inverter output voltage, the waveforms are of high quality with a THD of only 0.27%. The proposed topology is simulated for a 1200W system and all the simulation results of this work are presented.

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