Results 211 to 220 of about 4,243 (258)
A comprehensive review on charger technologies, types, and charging stations models for electric vehicles. [PDF]
HeliyonSaraswathi VN, Ramachandran VP.
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Small-Signal Stability Analysis of the Grid-Forming MMC-HVDC System
Yifei Meng +4 more
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Modelling of MMC-HVDC Systems – An Overview
Energy Procedia, 2015 AbstractModular Multilevel Converters (MMC) are presently the converter topology of choice for Voltage Source Converter High Voltage DC (VSC-HVDC) transmission schemes due to their very high efficiency. Accurate models of these complex MMC-HVDC systems are therefore required for research and development.
Beddard, A., Barnes, M.
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Research on fault diagnosis for MMC-HVDC Systems [PDF]
Protection and Control of Modern Power Systems, 2016 With the development of flexible HVDC technology, the fault diagnosis of MMC-HVDC becomes a new research direction. Based on the fault diagnosis theory, this paper proposes a robust fault diagnosis method to study the fault diagnosis problem of MMC-HVDC systems.
Yao, Zhiqing +3 more
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Lifetime estimation of IGBT modules for MMC-HVDC application
Microelectronics Reliability, 2018Abstract Modular multilevel converters (MMCs) usually work in harsh operating environments due to their compact layouts and adverse mission profiles, which accelerate the thermomechanical fatigue process in insulated-gate bipolar transistor modules (IGBTs).
Longjun Wang +3 more
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Modeling and Simulation of MMC-HVDC Energy System
Advanced Materials Research, 2014In order to study the steady-state performance of modular multilevel voltage source converter (MMC-HVDC), a 21-level MMC-HVDC system is modeled by PSCAD/EMTDC software. This system uses the DC voltage and active power controls, which are designed by the fundamental operation principles and mathematical models of MMC-HVDC.
Guang Hao Yang +3 more
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Detailed and Averaged Models for a 401-Level MMC–HVDC System
IEEE Transactions on Power Delivery, 2012Summary form only given. Voltage Source Converter (VSC) technologies present a bright opportunity in a variety of fields within the power system industry. New Modular Multilevel Converters (MMCs) are expected to supersede two- and three-level VSC-based technologies for HVDC applications due to their recognized advantages in terms of scalability ...
Jaime Peralta +4 more
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Arm Overcurrent Protection and Coordination in MMC-HVDC
2018 IEEE Power & Energy Society General Meeting (PESGM), 2018This paper discusses the coordination of arm overcurrent protective functions, which are configured both in valve controls and DC protections of modular multilevel converter based HVDC (MMC-HVDC). Since the parameter mismatching in valve control and DC protection may lead to unexpected block, the ac protection coordination diagram is used to analyze ...
Qingrui Tu +6 more
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The Improvement of Multi-infeed DC system by MMC-HVDC connection
2020 IEEE Power & Energy Society Innovative Smart Grid Technologies Conference (ISGT), 2020MMC-HVDC can provide voltage support for the receiving power grids. The Multi-infeed interaction factor (MIIF) between the converter buses can be reduced in a multi-infeed DC system by the connection of the MMC-HVDC system. Consequently, the MIESCR (Multi-infeed Effective Short Circuit Ratio) of the converter bus can be increased and the stability of ...
Chao Gao +4 more
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