Topology Review of Grid-Connected Multilevel Inverters Supplied by Photovoltaic Panels using Switched-Capacitor Based Circuits

Hemmati, Tala; Marangalu, Milad Ghavipanjeh; Kurdkandi, Naser Vosoughi; Khoshkbar-Sadigh, Arash; Hosseini, Seyed Hossein; Jahan, Hossein Khoun

doi:10.1109/icit46573.2021.9453484

Cited by 15 publications

(7 citation statements)

References 17 publications

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“…The technological evolution of power electronics has considerably boosted the use of renewable energies by improving their quality and efficiency. Several authors have discussed the different topologies of converters used in photovoltaic and wind systems and have classified them into the following four large families [43][44][45][46][47][48][49] AC-AC converters.…”

Section: Power Converters Used In Pv and Wind Systemsmentioning

confidence: 99%

Overview of Photovoltaic and Wind Electrical Power Hybrid Systems

et al. 2023

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The overexploitation of non-renewable fossil resources has led to dangerous warming of our planet due to greenhouse gas emissions. The main reason for this problem is the increase in global energy demand. The rising prices of oil and gas have pushed governments around the world to turn to renewable energy, especially solar and wind power. For this reason, the present paper aimed to focus on photovoltaic and wind energy systems. However, exploitation of these two sources individually is not always easy because of their intermittent and irregular characters. Therefore, the obvious solution is the hybridisation of these two sources, which, when used alongside other systems such as batteries, increases the reliability, availability, and efficiency of these renewable sources. The main objective of this paper is to give an overview of different configurations of hybrid solar and wind energy conversion systems. First, the behaviour of each system, as well as their mathematical models, characteristics, and existing topologies, is presented. Then, the control strategies, optimal configurations, and sizing techniques, as well as different energy management strategies, of these hybrid PV–wind systems are presented.

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Section: Power Converters Used In Pv and Wind Systemsmentioning

confidence: 99%

Overview of Photovoltaic and Wind Electrical Power Hybrid Systems

et al. 2023

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“…The identical capacitors used in the DC links of single-phase MLIs may be used in three-phase systems. Table 7 provides a comparative study of different mid-point-clamped SC-MLIs [187][188][189][190][191][192][193][194][195][196][197]. a.…”

Section: Mid-point-clamped Sc-mlismentioning

confidence: 99%

“…This converter is also called a three-port single-DC source inverter or a transformer-less inverter with double grounding. Table 8 provides a comparative study of different CGSC-based MLIs, and Table 9 provides comparative study of different hybrid MLIs [194][195][196]. a.…”

Section: Common Ground Switched-capacitor (Cgsc)-based Mlismentioning

confidence: 99%

A Review of Multilevel Inverter Topologies for Grid-Connected Sustainable Solar Photovoltaic Systems

Nyamathulla,

Chittathuru

2023

Sustainability

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Solar energy is one of the most suggested sustainable energy sources due to its availability in nature, developments in power electronics, and global environmental concerns. A solar photovoltaic system is one example of a grid-connected application using multilevel inverters (MLIs). In grid-connected PV systems, the inverter’s design must be carefully considered to improve efficiency. The switched capacitor (SC) MLI is an appealing inverter over its alternatives for a variety of applications due to its inductor-less or transformer-less operation, enhanced voltage output, improved voltage regulation inside the capacitor itself, low cost, reduced circuit components, small size, and less electromagnetic interference. The reduced component counts are required to enhance efficiency, to increase power density, and to minimize device stress. This review presents a thorough analysis of MLIs and a classification of the existing MLI topologies, along with their merits and demerits. It also provides a detailed survey of reduced switch count multilevel inverter (RSC-MLI) topologies, including their designs, typical features, limitations, and criteria for selection. This paper also covers the survey of SC-MLI topologies with a qualitative assessment to aid in the direction of future research. Finally, this review will help engineers and researchers by providing a detailed look at the total number of power semiconductor switches, DC sources, passive elements, total standing voltage, reliability analysis, applications, challenges, and recommendations.

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“…To mitigate the CMV completely, CGSC-based MLIs have recently been proposed, where the ground of the input dc source and neutral point of the grid or the load are directly connected to each other. Hence, no leakage current can be propagated through the system since the parasitic capacitance appearing between the negative terminal of the input dc source such as PV panels and the ground can see a grounded potential rather than a variable HF-CMV [170]- [172]. This type of converter is also named as three-port single-dcsource inverter or doubly grounded transformerless inverter, [121], [122], [124].…”

Section: Cgsc-based Mlismentioning

confidence: 99%

Switched-Capacitor Multilevel Inverters: A Comprehensive Review

Barzegarkhoo

Forouzesh

Lee

et al. 2022

IEEE Trans. Power Electron.

123

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Multilevel inverters (MLIs) with switched-capacitor (SC) units have been a widely rehearsed research topic in power electronics since the last decade. Inductorless/transformerless operation with voltage-boosting feature and inherent capacitor self-voltage balancing performance with a reduced electromagnetic interference make the SC-MLI an attractive converter over the other available counterparts for various applications. There have been many developed SC-MLI structures recently put forward, where different basic switching techniques are used to generate multiple (discrete) output voltage levels. In general, the priority of the topological development is motivated by the number of output voltage levels, overall voltage gain, and full dc-link voltage utilization, while reducing the component counts and stress on devices for better efficiency and power density. To facilitate the direction of future research in SC-MLIs, this article presents a comprehensive review, critical analysis, and categorization of the existing topologies. Common fundamental units are generalized and summarized with their merits and demerits. Ultimately, major challenges and research directions are outlined leading to the future technology roadmap for more practical applications.

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Topology Review of Grid-Connected Multilevel Inverters Supplied by Photovoltaic Panels using Switched-Capacitor Based Circuits

Cited by 15 publications

References 17 publications

Overview of Photovoltaic and Wind Electrical Power Hybrid Systems

Overview of Photovoltaic and Wind Electrical Power Hybrid Systems

A Review of Multilevel Inverter Topologies for Grid-Connected Sustainable Solar Photovoltaic Systems

Switched-Capacitor Multilevel Inverters: A Comprehensive Review

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