Cascaded multilevel inverter for vertical stabilization and radial control power supplies

Griva, G.; Musumeci, Salvatore; Bojoi, Radu; Zito, Pietro; Bifaretti, Stefano; Lampasi, Alessandro

doi:10.1016/j.fusengdes.2023.113473

Cited by 5 publications

(4 citation statements)

References 7 publications

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“…Multilevel inverters play an essential role in grid-connected energy systems by efficiently converting direct current from sources like solar panels into gridcompatible alternating current. Their widespread adoption is due to their role in facilitating smooth integration, enhancing energy yields, and advancing sustainable power generation [4][5][6]. Given that the need for energy-efficient and environmentally friendly solutions rises, their popularity is anticipated to keep expanding [4,5,[7][8][9][10].…”

Section: Introductionmentioning

confidence: 99%

“…Their widespread adoption is due to their role in facilitating smooth integration, enhancing energy yields, and advancing sustainable power generation [4][5][6]. Given that the need for energy-efficient and environmentally friendly solutions rises, their popularity is anticipated to keep expanding [4,5,[7][8][9][10]. The inverter system control includes the controllers at the dc side, current controllers, modulation using carrier waves, and the controller in the Phase-Locked Loop (PLL) to synchronize with the power grid.…”

Section: Introductionmentioning

confidence: 99%

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Control of a Grid-connected Inverter using Sliding Mode Control

Tran

2024

Eng. Technol. Appl. Sci. Res.

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The rising popularity of grid-connected multilevel inverters with photovoltaic panels underscores the importance of effective modulation and control strategies for ensuring optimal power quality. The performance of these inverters hinges significantly on modulation and control approaches, specifically addressing issues like common mode voltage, harmonics, switching loss, and dynamic response. This study introduces a novel approach to mitigate current harmonics in these inverters by employing sliding mode control. Notably, this technique achieves harmonic reduction without necessitating an increase in the switching count. The presented technique eliminates phase-locked loop, current controllers, and carrier waves, thereby easing hardware computation. Beyond computational efficiency, this approach contributes to enhanced power quality and dynamic response within the inverter system. Simulation results affirm the efficacy of the proposed method when compared to the use of the phase opposite disposition modulation combined with the current controllers. In the nominal operational mode, the proposed method reduces the current Total Harmonic Distortion (THD), the highest magnitude of individual harmonics, and the switching count by 43.6%, 73.5%, and 19.6% respectively, compared with those of the method using the phase opposite disposition modulation combined with current controllers.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Control of a Grid-connected Inverter using Sliding Mode Control

Tran

2024

Eng. Technol. Appl. Sci. Res.

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“…Multilevel three-phase inverters have become popular in recent years due to their ability to provide high-quality output voltage with reduced harmonic distortion. They are suitable for various applications, including renewable energy systems, electric vehicles, and industrial automation, where efficient and reliable power conversion is crucial [1][2][3]. The multilevel threephase inverters have also gained attention in grid-connected applications, where they help reduce power losses and increase system efficiency.…”

Section: Introductionmentioning

confidence: 99%

“…The multilevel threephase inverters have also gained attention in grid-connected applications, where they help reduce power losses and increase system efficiency. Their popularity is expected to continue to grow as the demand for energy-efficient and clean energy solutions increases [1,2], [4][5][6][7]. Additionally, ongoing research and development in the field are expected to lead to further improvements in performance and cost-effectiveness.…”

Section: Introductionmentioning

confidence: 99%

Harmonic reduction of grid-connected multilevel inverters using modulation of variable frequency carriers

Tran

2023

Journal of Electrical Engineering

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Multilevel three-phase inverters are increasingly popular due to their ability to generate high-quality output voltage with harmonic distortion lower than traditional inverters. They are used in various applications, including grid-connected renewable energy systems, motor drives, and power transmission systems, to improve efficiency and reduce costs. The control quality of grid-connected multilevel inverters depends on various factors such as the modulation technique, switching frequency, and control strategy. A good control system can achieve a balance between output current harmonics and switching losses, improving the efficiency and performance of the inverter. This paper suggests a technique for reducing current harmonics of grid-connected multilevel three-phase inverters using variable frequency carriers, without any corresponding increase of the number of switching commutations. The effectiveness of the suggested method has been confirmed through simulation results, which were compared to those obtained from the method of phase opposite disposition modulation using fixed frequency carriers.

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