Results 181 to 190 of about 122,391 (218)
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Dual loop control for eliminating DC-bias in a DC-DC dual active bridge converter
2014 International Conference on Renewable Energy Research and Application (ICRERA), 2014In bi-directional dual active bridge (DAB) converters, non-ideal behavior of the system components can lead to dc bias in the converter which results in magnetic saturation of the high frequency transformer. This paper proposes adding an extra control loop to overcome this problem.
Bhanu Prashant Baddipadiga +1 more
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Identifying DC bias conditions for maximum DC current in digitally-assisted analog design
2015 IEEE International Conference on Electronics, Circuits, and Systems (ICECS), 2015We propose a novel methodology for maximizing DC current in digitally-assisted analog circuit. The proposed methodology identifies a set of analog bias voltages and digital mode selection signals that maximizes the DC current through either a particular wire segment or the power/ground bus.
Chong Li +2 more
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Influence of DC Bias on the Properties of the Piezoelectric Material
Materials Science Forum, 2016According to the resonant characteristics of piezoelectric materials, in order to get the parameters of piezoelectric materials under DC bias voltage by calculate the impedance spectrum of piezoelectric materials, and the changes of the parameters of piezoelectric materials under DC bias were discussed.
Kang Le, Yu Jun Feng
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The research on reactive power and DC bias compensation
2011 International Conference on Electrical Machines and Systems, 2011High voltage DC transmission (HVDC) used in the way of single cycle operation will make the transformer produce serious DC magnetic bias. Besides that, still with distortion of the transformer excitation current, temperature rises and noise increases, then will cause a lot of accidentally harmonic pollution for the grid. The use of inductive appliances,
Baodong Bai +3 more
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Dielectric susceptibility of PMN under DC bias
Ferroelectrics, 1992Abstract Dielectric susceptibility changes under action of external DC electric fields have been studied for lead magnesium niobate PbMg1/3Nb2/3O3 (PMN) (1,1,1) oriented crystals. At about 210 K, an anomaly appears, which depends on the strength of the field and on the measurement conditions.
R. Sommer +2 more
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Reactive power demand of transformers with DC bias
Proceedings of 1994 IEEE Industry Applications Society Annual Meeting, 2002Transformers in power electronic circuits are inadvertently but frequently exposed to direct current (DC) bias due to circuit imperfections. Such undesirable bias currents occur, for example, in power system transformers near high voltage DC terminals or in the event of geomagnetically induced currents (GICs) or nuclear explosions.
Y. You, E.F. Fuchs, P.R. Barnes
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Design of dc-bias resilient transformers
Geomagnetic disturbances (GMDs) give rise to geomagnetically induced currents (GICs) on the earth’s surface which find their way into power systems via grounded transformer neutrals. The quasi-dc nature of the GICs results in half-cycle saturation of the power grid transformers which in turn results in transformer failure, life reduction, and other ...openaire +1 more source
DC Bias Diagnosis of Power Transformer with Soundprint Features
Proceedings of the 7th International Conference on Cyber Security and Information Engineering, 2022Shaohua Han +4 more
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DC Bias Elimination and Soft Switching in Transient State of Dual-Active-Bridge DC-DC Converter
IECON 2022 – 48th Annual Conference of the IEEE Industrial Electronics Society, 2022Zhe Wang, Chi Li, Jiye Liu, Zedong Zheng
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