Photovoltaic applications for off-grid electrification using novel multi-level inverter technology with energy storage

Bandara, Kapila; Sweet, Tracy; Ekanayake, Janaka

doi:10.1016/j.renene.2011.05.036

Cited by 60 publications

(20 citation statements)

References 11 publications

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“…A micro-inverter with grid-connected, phase-shift power modulation scheme, lesser passive components and with a decreased number of power conversion is suggested in [76]. 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].…”

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 fact, these systems are widely established in hilly regions and remote villages where they are used for a wide range of applications such as rural electrification, auxiliary power units for emergency services or military applications, and manufacturing facilities using sensitive electronics [1], [2].…”

Section: Introductionmentioning

confidence: 99%

Frequency-Based Energy-Management Strategy for Stand-Alone Systems With Distributed Battery Storage

Urtasun

Sanchis

Sanchís

et al. 2015

IEEE Trans. Power Electron.

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Distributed generation is an attractive solution for stand-alone AC supply systems. In such systems, the installation of two or more energy-storage units is recommended for system redundancy and may also be required when there is a consumption increase following installation. However, energy management with multiple energy-storage units has been but vaguely analyzed in the literature and the few studies made are based on communication cables with a central supervisor. This paper proposes an energy management strategy for a multiplebattery system which makes it possible to avoid the use of communication cables, rendering the system more cost-effective and reliable. The strategy modifies the conventional droop method so that the power becomes unbalanced, allowing for the regulation of one or more battery voltages or currents, as required. Furthermore, whenever the frequency is high, the PV inverters reduce their power in order to prevent the battery from overcharge or high charging currents. On the other hand, whenever the frequency is low, then either the non-critical loads are regulated or the system stops in order to prevent the battery from over-discharge or high discharging currents. Simulation and experimental validation are performed for a system with two battery inverters, two PV inverters and a number of loads.

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“…Beside the conventional type of inverters, various configurations have been proposed over last two decades. Z source inverter [3], fly back inverters [4] and also multilevel voltage source inverters (MLI) are count as most important alternatives for classic inverters [5][6].…”

Section: Introductionmentioning

confidence: 99%

A hybrid switched-capacitor multilevel inverter with self charge balancing and less number of switches

Zamiri

Barzegarkhoo

Karami

et al. 2015

The 6th Power Electronics, Drive Systems &Amp; Technologies Conference (PEDSTC2015)

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Multilevel inverters with less number of components and power supplies play important role in most of power electronic applications. In this paper, a new switched capacitor multilevel inverter (SCMLI) is presented which can generate more output voltage levels with less number of components and one required dc power supply in contrast to some of existing topologies. This structure uses a new switched capacitor converter (SCC) which includes several capacitors that can be charged by binary asymmetrically algorithm as self-balancing. At the next, proposed SCMLI is connected to another SCMLI unit as hybrid form and then, the output voltage levels are increased with good quality using hybrid modulation technique. Several simulation results by PSCAD/EMTDC software and comparisons in different aspects such as number of required switches, capacitors, number of components that are in current path and total blocked voltage is given to confirm the effectiveness of proposed topology.

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Photovoltaic applications for off-grid electrification using novel multi-level inverter technology with energy storage

Cited by 60 publications

References 11 publications

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

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

Frequency-Based Energy-Management Strategy for Stand-Alone Systems With Distributed Battery Storage

A hybrid switched-capacitor multilevel inverter with self charge balancing and less number of switches

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