Results 21 to 30 of about 34,190 (312)
Research on the mechanism of neutral-point voltage fluctuation and capacitor voltage balancing control strategy of three-phase three-level T-type inverter [PDF]
, 2017 In order to solve the neutral-point voltage fluctuation problem of three-phase threelevel T-type inverters (TPTLTIs), the unbalance characteristics of capacitor voltages under different switching states and the mechanism of neutral-point voltage ...
Duan, Shuangming +5 more
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IEEE Access, 2021 This article presents an 11-level operation of the WE (Wee)-Type inverter. The topology employs a single DC-source, has a reduced number of components, and exhibits a boosting capability.
Mohammad Ali +5 more
doaj +1 more source
Power Quality Improvement Wind Energy System Using Cascaded Multilevel Inverter [PDF]
, 2013 In this paper, a wind energy conversion system based on a cascaded H-bridge multilevel inverter (CHBMLI) topology has been proposed to be used for the grid interface of large split winding alternators (SWAs).
A. S., Kumar, J.S., Sathiyanarayanan
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A simple DC-Link Voltage Balancing Strategy for NPC Three-level Inverters
2023 25th European Conference on Power Electronics and Applications (EPE'23 ECCE Europe), 2023 Three-level neutral point clamped PWM inverters overcome some limitations of two-level inverters in medium voltage applications, leading to lower device ratings and greater efficiency. However, they are burdened by an intrinsic drawback of the neutral point clamped structure, which causes, under some operating conditions, a voltage imbalance of the DC ...
Foti S. +5 more
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Derivation of Voltage Source Multilevel Converter Topologies [PDF]
, 2017 Multilevel converters have gained popularity in both medium voltage and low voltage applications. To find out the connections between various multilevel voltage-source converter topologies and to reveal how to obtain new topologies, this paper has ...
Yuan, Xibo
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Active Voltage Balancing of Integrated Modular Drive with Series DC-Link Capacitors
2020 IEEE Energy Conversion Congress and Exposition (ECCE), 2020 In order to reduce the size and weight of transmission cables, high direct current (DC) bus voltage is desired for electrical machine drives used in the hybrid powertrains of more-electric aircraft (MEA). An integrated modular machine drive (IMMD) with DC-link capacitors connected in series is adopted to break down the supply voltage for each drive ...
Wu, Fan +2 more
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Energies, 2018 In three-level neutral-point-clamped (NPC) inverters, the voltage imbalance problem between the upper and lower dc-link capacitors is one of the major concerns.
Kyoung-Pil Kang +3 more
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Harmonics Compensation by Using a Multi-Modular H-Bridge-Based Multilevel Converter
Energies, 2021 This paper presents an active power filter based on a seven-level cascade H-bridge where the main contribution is a control strategy that combines model-based predictive control, the voltage vectors of the converter output levels, the phase shift PWM ...
Raul Gregor +5 more
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A new space-vector-modulation algorithm for a three-level four-leg NPC inverter [PDF]
, 2016 For power conversion systems interfaced to 4-wire supplies, four-leg converters have become a standard solution. A four-leg converter allows good compensation of zero-sequence harmonics and full utilization of the dc-link voltage.
Felix Rojas +5 more
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Leg-Balancing Control of the DC-link Voltage for Modular Multilevel Converters [PDF]
Journal of Power Electronics, 2012 This paper applies carrier phase shifted pulse-width modulation (CPS-PWM) to transformerless modular multilevel converters (MMC) to improve the output spectrum. Because the MMC topology is characterized by the double-star connection of six legs consisting of cascaded modular chopper cells with floating capacitors, the balance control of the DC-link ...
Sixing Du, Jinjun Liu, Jiliang Lin
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