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Temporary overvoltage assessment and suppression in heterogeneous renewable energy power systems
International Journal of Electrical Power & Energy SystemsXinyu Liu +3 more
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Interfacial modification of NaCoO2 positive electrodes with inorganic oxides by simple mixing and the effects on all-solid-state Na batteries. [PDF]
RSC AdvIchikawa T, Hiraoka K, Seki S.
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Atmospheric Overvoltages Suppression: In Situ and Analytical Validation
IEEE Transactions on Electromagnetic Compatibility, 2023This article deals with the issues arising from non-adequately designed grounding system of the telecommunication cell tower, in situ experimental investigations, novel system design, and consecutive verification as well as in-depth analysis based on the analytical model.
Tonko Garma +3 more
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Overvoltage Suppression Strategy After Short Circuit Faults Applied to PV Systems
IEEE Transactions on Industry Applications, 2023The worldwide transition to renewable-based energy systems is continuing to speed up due to the strong demand on pollutant gas emission reduction and the supportive policies of the governments.
Hongjin Fan +6 more
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Suppression of Incoming High-Frequency Overvoltage in Transformer Coils
IEEE Transactions on Power Delivery, 2021High-frequency overvoltages are most dangerous for the insulation of transformer coils. It is because high-frequency pulse voltage creates an uneven distribution of voltage across the windings. The coil's first turns receive a disproportionately high voltage drop, leading to the inter-turn circuit.
Sergey M. Korobeynikov +4 more
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Suppressing overvoltage on carbodies of a highspeed EMU
2013 15th European Conference on Power Electronics and Applications (EPE), 2013Overvoltage is created on carbodies of a highspeed electric multiple unit (EMU) when the train raises its pantograph or when its main circuit breaker is switched. This paper outlines the mechanism behind the phenomenon of overvoltage generation on carbodies of the highspeed train, proposing suppressing method, and the results of verification of the ...
S. Hatsukade, K. Fujino, S. Kanno
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Overvoltage suppression for UHV transmission lines
Transactions of Tianjin University, 2008The overvoltage phenomena of ultra high voltage (UHV) transmission lines are analyzed and verified by EMTDC/PSCAD simulation. Referring to the theoretical analyses and operating experiences of extra high voltage (EHV) transmission lines in China and UHV transmission lines in Russia and Japan, the methods to suppress the internal overvoltage in UHV ...
Yongli Li +5 more
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Overvoltage suppression filter design methods based on voltage reflection theory
IEEE International Electric Machines and Drives Conference, 2003. IEMDC'03., 2003To reduce voltage overshoot at the motor terminal, RLC filters are used at the inverter side with an objective of increasing the rise time, while RC filters are used at the motor side as a means of reducing the load impedance at high frequency. However, no clear optimal method for determining the filter parameters has appeared. In this work, we propose
Lee, S, Nam, K
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Overvoltages in reactive circuits due to current suppression
Electric Power Systems Research, 1991Abstract Serious overvoltages may be generated by current suppression (or current chopping) when switching out shunt reactors or unloaded transformers. Normalized overvoltage profiles are determined using (a) a single concentrated resistor and (b) a distributed resistance network to simulate eddy current loss in the magnetic core.
D. O'Kelly, A.R.M. Salih, B. Benson
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A low-loss motor terminal filter for overvoltage suppression
2010 IEEE Energy Conversion Congress and Exposition, 2010Inverter-fed motor drive systems are widely used because of their benefits for energy efficiency and for flexible control of machinery using maintenance-free induction motors. As the inverter produces fast-switching voltage pulses, the transmission-line effects of the motor cable and motor stator windings become significant, and may lead to a doubling ...
Kuen-Faat Yuen, Henry Shu-Hung Chung
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