Results 11 to 20 of about 849,814 (251)
Integrated optimization of loss distribution and capacitor voltage ripple for MMC devices
电力工程技术Under inverter operating conditions, significant loss is incurred by the insulated gate bipolar transistor (IGBT) (referred to as T2 tube) in the lower part of the half-bridge submodule.
SU Tiantian +4 more
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Research on Calculation Method of DC Side Capacitor Ripple Components for Three-level Inverter
Kongzhi Yu Xinxi Jishu, 2020 Ripple current of DC side capacitor affects capacity selection and life of a capacitor, and ripple voltage of capacitor affects the voltage that power device needs to bear, so analysis of capacitor ripple components is very important for the design of ...
ZHANG Honghao +4 more
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Impact of Unbalanced Grid Voltages on Capacitor Voltage Ripple and Capacitance Selection in AC/AC MMCs [PDF]
IEEE Open Journal of Power ElectronicsThis paper evaluates the submodule capacitor current and voltage ripple of a direct three-phase to single-phase ac/ac MMC under unbalanced grid conditions.
Ygor Pereira Marca +3 more
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Capacitor Voltage Ripple Suppression for Z-Source Wind Energy Conversion System
Energies, 2016 This paper proposes an improved pulse-width modulation (PWM) strategy to reduce the capacitor voltage ripple in Z-source wind energy conversion system. In order to make sure that Z-source capacitor voltage has symmetrical maximum and minimum amplitudes ...
Shoudao Huang, Yang Zhang, Zhikang Shuai
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Capacitor voltage ripple and capacitance evaluation in a direct three-phase to single-phase ac/ac MMC [PDF]
, 2023 This paper introduces the capacitor current and voltage ripple evaluation of a direct three-phase to single-phase ac/ac modular multilevel converter with full-bridge sub-modules.
Pereira Marca, Ygor; id_orcid +2 more
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Comparison between flying capacitor and modular multilevel inverter [PDF]
, 2009 The paper describes the operational principle of flying capacitor and modular multilevel inverters. The detailed discussions of dc link capacitors voltage balancing methods for both inverters are given in order to enable fair comparison. The causes of dc
Anaya-Lara, O. +5 more
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VSC transmission system using flying capacitor multilevel converters and hybrid PWM control [PDF]
, 2007 A high-voltage direct current (HVDC) transmission system based on three-level flying capacitor (FC) multilevel converters with hybrid pulse-width modulation (PWM) is presented in this paper.
Agelidis, V.G., Xu, L.
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IET Power Electronics, 2022 This paper proposes a novel active power decoupling circuit (APDC) based on modified Buck converter to reduce the DC‐link voltage ripple of small capacitor motor drive systems. The APDC is placed between the Boost PFC circuit and the DC‐link, and has two
Chao Zhang +4 more
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Energies, 2021 The modular multilevel converter is capable to reach high-voltage levels with high flexibility, high reliability, and high power quality as it became the standard solution for high-power high-voltage applications that operate with fixed frequency ...
Gustavo Gontijo +3 more
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A Wind Energy Prediction Scheme Combining Cauchy Variation and Reverse Learning Strategy
Advances in Electrical and Computer Engineering, 2021 Modular multilevel converters (MMCs) can be a reliable solution since they have modular structure and high quality output waveform for permanent magnet synchronous generator (PMSG) based wind energy conversion system (WECS). Capacitor voltage balancing
WU, X., SHEN, X., ZHANG, J., ZHANG, Y.
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