Results 21 to 30 of about 4,753,988 (311)
Electric power systems research, 2019 Wind turbines are very vulnerable to lightning strikes due to their height, sharp edges and remote locations often with high soil resistivity. In this paper we present numerical simulations of the impedance of a typical wind turbine grounding geometry ...
A. Šunjerga +4 more
semanticscholar +1 more source
IEEE Access, 2019 This paper discusses the step and touch voltages, based on body resistance, in a grounding grid after a lightning strike at a 434-/21-kV substation. To ensure grounding grid safety, the maximum step and touch voltage should not exceed the safety criteria
Saeid Gholami Farkoush +5 more
doaj +1 more source
Energies, 2019 To meet the United Nation’s sustainable development energy goal, the Korean Ministry of Commerce announced they would increase renewable energy generation to 5.3% by 2029.
Yucheol Jeong, Eul-Bum Lee, D. Alleman
semanticscholar +1 more source
A High-Efficiency Low-Wearing Hybrid Voltage Regulator for Utility Applications
IEEE Open Journal of Industry Applications, 2023 Step voltage regulator (SVR) has been utilized in power distribution systems for decades as the voltage regulation device. Due to the increasing integration of distributed energy resources, the conventional SVR is severely challenged by the modern power ...
Yafeng Wang, Tiefu Zhao
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The Effect of Soil Type on Touch Voltage and Step Voltage in the Grid Grounding System
ELKHAThe grounding system is one of the security systems in substations to channel excess voltage caused by lightning strikes that occur at substations, as well as electrical equipment.
Ayu Fitriani +2 more
semanticscholar +1 more source
IEEE Transactions on Smart Grid, 2018 Open-delta connected step voltage regulators (SVRs) have been widely installed into distribution networks, and their characteristic model (auto-transformer model) has been established over the years for power system analysis.
R. Yan +4 more
semanticscholar +1 more source
Voltage Clamping Circuits for Large Voltage Step-Down Coupled Inductor Converters
Renewable Energy and Sustainable Development, 2019 Water desalination processes require power converters with large voltage step-down ratios and high efficiencies. Coupled‑inductor (tapped-inductor) circuits can achieve this where the whole inductor carries current during one switch state but only part ...
Richard Pollock
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International Transactions on Electrical Energy Systems, 2023 A coupled-inductor-based high step-up high step-down DC-DC converter with bidirectional capability suitable for electric vehicle (EV) applications is proposed in this paper.
Muhammad Zeeshan Malik +5 more
doaj +1 more source
A Novel Step-Up Converter with an Ultrahigh Voltage Conversion Ratio
Energies, 2018 A new step-up converter with an ultrahigh voltage conversion ratio is proposed in this paper. Two power switches of such a converter, which conduct synchronically, and its output voltage, which has common ground and common polarity with its input voltage,
Faqiang Wang +2 more
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A Step-Up Converter with Large Voltage Gain and Low Voltage Rating on Capacitors
Energies, 2022 Step-up converters are widely used in many applications, such as renewable energy generation with photovoltaic panels and fuel cell stacks. In many cases, the required voltage gain is larger for those applications than a traditional boost converter can ...
Miguel Ramirez-Carrillo +6 more
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