Results 11 to 20 of about 5,668 (267)
IEEE Access, 2021 The submodule capacitor voltage fluctuation of the modular multilevel converter (MMC) leads to the increase of the size of the submodule capacitor, the increase of system cost, and the decrease of system reliability and stability.
Zhen Yang +4 more
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A Novel Z-Type Self-Balancing Modular Multilevel Converter for Flywheel Driving Applications [PDF]
E3S Web of Conferences, 2021 With the development of flywheel technology, the speed and the voltage level of flywheel continue to increase. The Z-type self-balancing modular multilevel converter can have a wide frequency range at medium voltage and is suitable for flywheel driving ...
Cheng Shuoqi +4 more
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Capacitor voltage balance control strategy based on MMC-MTDC [PDF]
E3S Web of Conferences, 2022 The MMC is composed of a large number of sub-modules. The operating conditions of each sub-module are different, which will inevitably affect the capacitor voltage of each sub-module, resulting in the difference of the capacitor voltage of each sub ...
Ju Pengfei +5 more
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Kongzhi Yu Xinxi Jishu, 2023 The neutral point clamped (NPC) three-level dual-active bridge (DAB) converter can be applied at higher voltage levels and in a wider operating range than the traditional DAB converter, and therefore it is more promising in future applications.
LIU Chao, LI Chi
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Energy Reports, 2022 Energy crisis and climate changes have brought great challenges to traditional power generation and transmission. Nowadays, the power transmission system of VSC-HVDC attracts more and more attention.
Qing Chen +9 more
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Asymmetric voltage equalization control strategy of half-bridge three-level dual active bridge
电力工程技术, 2022 To make sure the half-bridge three-level dual active bridge (HBTL-DAB) circuit works correctly,the problem of capacitor voltage equalization between the upper and lower direct current (DC) buses on the three-level side must be solved.
WANG Zhigang +4 more
doaj +1 more source
Enhanced Voltage Sorting Algorithm for Balancing the Capacitor Voltage in Modular Multilevel Converter [PDF]
IEEE Access, 2021 In this paper, an enhanced voltage sorting algorithm is proposed for balancing each sub module capacitor voltage in modular multilevel converter (MMC). However, the submodule (SM) voltage strategy becomes more complex when it increases to a number of levels, which eventually increases voltage ripples and circulating current.
Hidayathullah Mohamed Ismail +1 more
openaire +2 more sources
Applied Sciences, 2020 A predictive control method using injected offset voltage to achieve neutral point (NP) voltage balance of three-phase three-level neutral point clamped (NP) rectifiers, without employing a weighting factor, is proposed in this study.
Eun-Su Jun +2 more
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Energies, 2021 A large number of modular multilevel converters (MMC) are connected to HVDC transmission systems nowadays. This paper aims at the short-circuit fault in the DC line of the HVDC transmission system and the problem of capacitor voltage imbalance in MMC ...
Yuqi Pang +4 more
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The Research of Capacitor Voltage Balancing Strategy of MMC [PDF]
Advances in Engineering Research, 2015 Compared with the two level voltage source, the modular multilevel converter (MMC) adopting the modular design dose not have the disadvantages such as the direct series connected Insulated gate bipolar (IGBT),high generation of harmonics, etc. MMC is currently studied and applied in high voltage and high power conversion applications.
Jianpo Zhang, Jichen Liu, Xiufang Jia
openaire +1 more source