Results 31 to 40 of about 108,307 (312)
Energies, 2018 An AC-DC combined voltage is applied to the oil-pressboard insulation near the valve side during the operation of a converter transformer. To study the breakdown characteristics of an oil-pressboard insulation under such voltages, a typical plate ...
Qingguo Chen +3 more
doaj +1 more source
Energies, 2023 As the penetration of distributed energy resources (DER) has increased, research on direct current (DC) power transmission and distribution has been actively performed. The DC system has the advantage of high-power transmission efficiency.
Sung-Hun Lim +3 more
doaj +1 more source
Monolithic flux transformer-coupled high-Tc dc SQUID magnetometers [PDF]
, 1995 YBa/sub 2/Cu/sub 3/O/sub 7-x/ based monolithic flux transformer-coupled high-T/sub c/ DC SQUID magnetometers operating up to 73 K have been realized. The devices are characterized by high values of the modulation voltage, up to 32 /spl mu/V at 40 K.
Brons, G.C.S. +4 more
core +2 more sources
EntropyMetro stray currents flowing into transformer-neutral points cause the high neutral DC and a transformer to operate in the DC bias state.Because neutral DC caused by stray current varies with time, the neutral DC value cannot be used as the only ...
Aimin Wang +4 more
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 transformer modeling and control of DC-DC buck converter
International Journal of Power Electronics and Drive Systems (IJPEDS), 2019 Switching Power Converters convert one form of power to another with high ef-ciency and accurate control.One of the most widely used DC-DC Converter is Buck Converter. Control is invariably required to maintain the output voltage/current in spite of variations in source/load. In order to design the controller and gain insight about the system a dynamic
Sarun Soman +3 more
openaire +2 more sources
Analysis of transformer bias vibration based on "magnetic-mechanical" coupling
Journal of Applied Science and EngineeringThe large-scale application of flexible DC power transmission technology leads to DC bias in transformer cores, and the vibration analysis of transformers under the influence of DC bias is becoming a hot topic.
Junqiang Xing +3 more
doaj +1 more source
Three new DC-to-DC Single-Switch Converters
Renewable Energy and Sustainable Development, 2017 This paper presents a new family of three previously unidentified dc-to-dc converters, buck, boost, and buck-boost voltage-transfer-function topologies, which offer advantageous transformer coupling features and low capacitor dc voltage stressing.
Barry W. Williams, Mona Fouad Moussa
doaj +1 more source
Research on Transient DC Bias Analysis and Suppression in EPS DAB DC-DC Converter
IEEE Access, 2020 During excitation and demagnetization phase for the superconducting magnet, in dual-active-bridge (DAB) converter based power supply, a dc bias may occur in high-frequency transformer and thus lead to the faults.
Tianli Dai +6 more
doaj +1 more source
Isolated, multiple-output voltage dc-to-dc converter [PDF]
, 1969 Isolated, multiple output voltage dc-to-dc converter provides power for television transmitter used in space vehicles. The isolation is accomplished by using a single-end switching transformer circuit.
core +1 more source