Results 191 to 200 of about 9,639,269 (244)
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IEEE Journal of Emerging and Selected Topics in Industrial Electronics, 2023
The topology of a 17-level (17L) hybrid switched-capacitor multilevel inverter (SCMLI) with high voltage gain is presented in this work. A single source, four capacitors, six half-bridge switches (five with antiparallel diodes and one half-bridge without
Vishal Anand +6 more
semanticscholar +1 more source
The topology of a 17-level (17L) hybrid switched-capacitor multilevel inverter (SCMLI) with high voltage gain is presented in this work. A single source, four capacitors, six half-bridge switches (five with antiparallel diodes and one half-bridge without
Vishal Anand +6 more
semanticscholar +1 more source
An Inrush Current Limiting Strategy for Virtual-Oscillator-Controlled Grid-Forming Inverters
IEEE transactions on energy conversion, 2023Grid-forming (GFM) inverters refer to the ones that can regulate inverter voltages and frequencies instantaneously and simultaneously. In this paper, we focus on a recent time-domain GFM controller based on the virtual oscillator control realized by the ...
Minghui Lu
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IEEE Transactions on Power Delivery, 2023
Traditional second harmonic restraint method used in large-scale wind parks (WPs) transformers of may lead to incorrect action of relay protection. Regarding the above issues, a method for identifying inrush current of WP transformer based on difference ...
H. Shu, Xiaohan Jiang, Zhiqian Bo
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Traditional second harmonic restraint method used in large-scale wind parks (WPs) transformers of may lead to incorrect action of relay protection. Regarding the above issues, a method for identifying inrush current of WP transformer based on difference ...
H. Shu, Xiaohan Jiang, Zhiqian Bo
semanticscholar +1 more source
2023 6th Asia Conference on Energy and Electrical Engineering (ACEEE), 2023
The inrush current of the transformer may cause serious safety problems, and the traditional phase selection closing suppression strategy still has room for improvement.
Jun Song +3 more
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The inrush current of the transformer may cause serious safety problems, and the traditional phase selection closing suppression strategy still has room for improvement.
Jun Song +3 more
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ZVS and Inrush Charging Current Suppression Design for Switched-Capacitor Multilevel Inverters
IEEE transactions on power electronics, 2023Switched-capacitor (SC) based multilevel inverter (MLI) technique has been developed rapidly in recent years. However, the majority SC-MLIs operate with hard-switching and suffer from the inrush charging current problem of capacitors.
Jian He, Yuanmao Ye, Xiaolin Wang
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IEEE Industry Applications Magazine, 2010
This article presents the harmonic analysis of transformer inrush currents in offshore power systems. Offshore production facilities interconnected by subsea cables are becoming increasingly common, either as new projects or as extensions to existing facilities. Interconnection via a subsea cable introduces a significant shunt capacitance to the source
Ryan Turner, Kenneth Smith
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This article presents the harmonic analysis of transformer inrush currents in offshore power systems. Offshore production facilities interconnected by subsea cables are becoming increasingly common, either as new projects or as extensions to existing facilities. Interconnection via a subsea cable introduces a significant shunt capacitance to the source
Ryan Turner, Kenneth Smith
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IEEE Transactions on Power Delivery, 2022
The Ultra High Voltage (UHV) converter transformer may generate serious inrush current during closing. It will cause commutation voltage distortion and easily result in commutation failure of converters on the same commutation bus.
Pingping Han +7 more
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The Ultra High Voltage (UHV) converter transformer may generate serious inrush current during closing. It will cause commutation voltage distortion and easily result in commutation failure of converters on the same commutation bus.
Pingping Han +7 more
semanticscholar +1 more source
Startup Control to Eliminate Inrush Current for Star-Connected Cascaded H-Bridge STATCOM
IEEE transactions on power electronics, 2022Soft startup is essential to the operation of the star-connected cascaded H-bridge (CHB) STATCOM. The conventional startup stage involves only uncontrolled rectifier process in which the dc voltages are charged by inserting startup resistors to limit the
Daorong Lu +5 more
semanticscholar +1 more source
Sequence Current-Based Inrush Detection in High-Permeability Core Transformers
IEEE Transactions on Instrumentation and Measurement, 2023Modern transformers are designed with high-permeability core material to lower losses and noise levels. During energization, the transformer enters the ultrasaturation region and loses properties such as the dead angle and second harmonic content in ...
P. Mishra +3 more
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Numerical modelling of transformer inrush currents
2012 IEEE International Energy Conference and Exhibition (ENERGYCON), 2012This paper presents an application of a vector hysteresis model to the prediction of the inrush current due the arbitrary initial excitation of a transformer after a fault. The approach proposed seems promising in order to predict the transient overshoot in current and the optimal time to close the circuit after the fault.
CARDELLI, Ermanno, FABA, Antonio
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