Results 261 to 270 of about 914,586 (343)
Some of the next articles are maybe not open access.
Single-Phase Transformer Inrush Current Reduction Using Prefluxing
IEEE Transactions on Power Delivery, 2012Power transformers can experience large inrush currents upon energization, the severity of which depends on the source strength, the leakage impedance and residual flux of the transformer, and the angle of the applied voltage at energization. A novel inrush current reduction strategy has been implemented which involves setting a single-phase ...
Douglas I. Taylor +3 more
openaire +3 more sources
IEEE Journal of Emerging and Selected Topics in Power Electronics, 2022
Transformer-less multilevel inverters (MLIs) based on switched capacitors are gaining importance due to the voltage boosting ability from a single-input DC source and inherent capacitor voltage balancing capability. Most of the grid-connected transformer-
S. Majumdar +4 more
semanticscholar +1 more source
Transformer-less multilevel inverters (MLIs) based on switched capacitors are gaining importance due to the voltage boosting ability from a single-input DC source and inherent capacitor voltage balancing capability. Most of the grid-connected transformer-
S. Majumdar +4 more
semanticscholar +1 more source
Parameter Estimation of Single Phase Transformer Using Jellyfish Search Optimizer Algorithm
IEEE International Conference on Automatica, 2021In this paper, new application of Jellyfish search optimizer algorithm (JS) is proposed to estimate the parameters of single-phase power transformer which is one of the most important engineering problems.
Heba Youssef +3 more
semanticscholar +1 more source
IEEE Transactions on Instrumentation and Measurement, 2021
When the power transformer is reconnected to the power grid, and if there is a large residual flux in the iron core, an inrush current may result. To suppress inrush current, the detailed information of the residual flux needs to be known.
Cailing Huo +3 more
semanticscholar +1 more source
When the power transformer is reconnected to the power grid, and if there is a large residual flux in the iron core, an inrush current may result. To suppress inrush current, the detailed information of the residual flux needs to be known.
Cailing Huo +3 more
semanticscholar +1 more source
IEEE Transactions on Power Delivery, 2020
Residual magnetic flux can cause significant problems in electric power system operation if not taken into consideration. The laboratory setup and experimental procedure for determining the residual magnetic flux value of a single-phase transformer using
D. Vulin +3 more
semanticscholar +1 more source
Residual magnetic flux can cause significant problems in electric power system operation if not taken into consideration. The laboratory setup and experimental procedure for determining the residual magnetic flux value of a single-phase transformer using
D. Vulin +3 more
semanticscholar +1 more source
Residual Flux Measurement of the Single-Phase Transformer Based on Transient Current Method
IEEE transactions on applied superconductivity, 2020When the no-load transformer is connected to the power grid, an inrush current may be resulted as the existed residual flux in the transformer core. To suppress this inrush current, the detail information of the residual flux needs to be known.
Cailing Huo +3 more
semanticscholar +1 more source
Electromagnetic analysis of single-phase transformer banks under sympathetic inrush phenomenon
International Journal of Applied Electromagnetics and Mechanics, 2020Sympathetic inrush current phenomenon occurs when a transformer is switched on in a power network containing other transformers that are already energized. This interaction significantly changes duration and magnitude of transient magnetizing currents in
Diorge de Souza Lima +5 more
semanticscholar +1 more source
A Single-Phase Five-Level Transformer-Less PV Inverter for Leakage Current Reduction
IEEE transactions on industrial electronics (1982. Print), 2022Multilevel inverters are becoming more and more popular in photovoltaic applications because of lower total harmonic distortion, lower switching stress and lower electromagnetic interference. In this article, a single-phase five-level transformer-less PV
Xiaonan Zhu +5 more
semanticscholar +1 more source
Single-phase insulator transformers
IEEE Potentials, 2002To show that voltage surges are effectively transmitted between the windings of insulator transformers, a relatively simple and functional test was prepared. The test applied differential-mode voltage surges with small amplitudes to the primary winding of three different types of single-phase no-load insulator transformers.
S.H.L. Cabral, A. Raizer
openaire +1 more source