Results 1 to 10 of about 7,769,894 (338)
Behavior of Residual Current Devices at Earth Fault Currents with DC Component [PDF]
Sensors, 2022 Low-voltage electrical installations are increasingly saturated with power electronic converters. Due to very high popularity of photovoltaic (PV) installations and the spread of electric vehicles (EV) as well as their charging installations, DC–AC and ...
Stanislaw Czapp +2 more
doaj +3 more sources
The role of the DC component in human perception of AC–DC hybrid electric fields and a comparison with the AC component [PDF]
Scientific Reports, 2023 As part of the energy transition in Germany, high-voltage overhead power lines will be operated using hybrid systems that combine alternating and direct current (AC and DC). The degree to which humans perceive hybrid electric fields (EFs) is dependent on
Michael Kursawe +6 more
doaj +2 more sources
IEEE Access, 2019 Transformerless grid-connected distributed photovoltaic (PV) systems (TGCDPVs) has the merits of high efficiency, small size, and low cost, draws great interest in recent years.
Bo Long +4 more
doaj +2 more sources
Blind Modulation Format Identification Using the DC Component
IEEE Photonics Journal, 2019 We propose a blind modulation format identification (MFI) method based on direct-current (DC) component for coherent receivers. The DC value is affected by the distributions of received signal's modulated phase and amplitude. A monitoring factor R
Qingzhao Tan, Aiying Yang, Peng Guo
doaj +2 more sources
IET Generation, Transmission & Distribution, 2019 Corona current is an important parameter to characterise the corona discharge on high‐voltage direct current (HVDC) transmission lines. The spectral components of corona current are closely related to a variety of corona effects, such as audible noise ...
Yingyi Liu +4 more
doaj +2 more sources
The.main types of wind turbines-generators in the power supply system
Известия высших учебных заведений: Проблемы энергетики, 2022 THE PURPOSE. This paper considers the problem of relay protection functioning when the current transformer reaches the saturation mode which is provided by transient processes.METHODS. MATLAB Simulink software environment allows reproducing the method of
V. A. Novobritsky, D. S. Fedosov
doaj +1 more source
IEEE transactions on power electronics, 2021 The dc component, which may be caused by different factors in the grid voltage, is one of the disturbances that may severely affect the performance of grid synchronization systems and, therefore, grid-tied power converters. In the phase-locked loop (PLL)
S. Golestan +4 more
semanticscholar +1 more source
IEEE Access, 2023 Flashover characteristics are closely related to the electrical field distribution on the surface of oil-paper insulation. In this study, the effects of electrical field and DC voltage components on the creepage flashover characteristics of oil-paper ...
Jin Fubao, Zhou Yuanxiang
doaj +1 more source
Control method of DC component for NNBI accelerator power supply
Energy Reports, 2023 In the high voltage power supply of the negative ion source neutral beam injection system (NNBI) accelerator, the three-phase three-level neutral point clamping (NPC) inverter, as an inverter module, has a detectable DC component in its output.
Hongfei Yong +4 more
doaj +1 more source
DC Component Suppression of Grid-Connected Z-Source Inverter Based on Disturbance Observer
Energies, 2022 Regarding the problems of resonance and direct current (DC) components when the Z-source inverter (ZSI) without an isolation transformer is connected to the grid through an LCL filter, this paper proposes a novel DC component suppression strategy for a ...
Guofeng He +4 more
doaj +1 more source