Results 21 to 30 of about 2,361 (200)
Generalized Voltage-based State-Space Modelling of Modular Multilevel Converters with Constant Equilibrium in Steady-State [PDF]
, 2017 This paper demonstrates that the sum and difference of the upper and lower arm voltages are suitable variables for deriving a generalized state-space model of an MMC which settles at a constant equilibrium in steady-state operation, while including the ...
Bergna-Diaz, Gilbert +4 more
core +3 more sources
Enhanced flat-topped modulation for MMC control in HVDC transmission systems [PDF]
, 2017 Flat-topped modulation is a member of the family of triplen-series injection techniques that have been extensively utilized in PWM inverter systems to increase the DC-link, and hence semiconductor, utilization.
Fletcher, John E. +3 more
core +1 more source
Frontiers in Energy Research, 2021 The hybrid HVDC with cascaded multi-infeed MMC inverters is proposed in recent years and it will be put into reality in near future. But the control characteristic of this hybrid HVDC have not been discussed in details.
Jingbo Zhao, Yan Tao
doaj +1 more source
Enhanced AC voltage and frequency control on offshore MMC station for wind farm [PDF]
, 2017 For HVDC transmission systems based on modular multilevel converter (MMC) for connecting large offshore wind farms, the offshore AC voltage is regulated by the offshore MMC station and stable offshore AC voltage and frequency are important for the stable
Jing, Yiran, Li, Rui, Wang, Yi, Xu, Lie
core +1 more source
Energies, 2019 This paper determines the minimum short circuit ratio (SCR) requirement for a modular multilevel converter based high-voltage direct current (MMC-HVDC) transmission systems.
Zheren Zhang +4 more
doaj +1 more source
Stability Comparison Between Grid-forming and Grid-following Based Wind Farms Integrated MMC-HVDC
Journal of Modern Power Systems and Clean Energy, 2023 Grid-forming (GFM) control based high-voltage DC (HVDC) systems and renewable energy sources (RESs) provide support for enhancing the stability of power systems. However, the interaction and coordination of frequency support between the GFM-based modular
Rongcai Pan +5 more
doaj +1 more source
Zhongguo dianli, 2022 In MMC impedance modelling, the existing research does not take into account the influence of the capacitive voltage transformer (CVT) measurement characteristics on the mid and high frequency bands of the MMC impedance, which may reduce the accuracy of ...
Qinan LI +8 more
doaj +1 more source
Full Bridge MMC Converter Optimal Design to HVDC Operational Requirements [PDF]
, 2015 This project is funded by RTE, Paris, FrancePeer ...
Jovcic, Dragan +3 more
core +1 more source
Harmonic transfer characteristics of MMC‐HVDC systems
The Journal of Engineering, 2017 Modular multilevel converter (MMC) is considered as the most potential development of multilevel converter, the future of high‐voltage electric energy conversion, especially in the high‐voltage direct current (HVDC) transmission since the very beginning because of its unmatched advantages such as high modularity, compact structure, high quality of ...
Li Rong +4 more
openaire +1 more source
Robust and generic control of full-bridge modular multilevel converter high-voltage DC transmission systems [PDF]
, 2015 This paper presents the theoretical basis of the control strategy that allows the cell capacitor voltage regulation of the full-bridge modular multilevel converter (FB-MMC) to be controlled independent of its dc link voltage.
Adam, Grain Philip +1 more
core +1 more source