Results 151 to 160 of about 3,163 (202)
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IEEE Transactions on Power Delivery, 2018
Frequency response analysis (FRA) is an effective approach for detecting mechanical damage in the windings of a transformer. However, the application of FRA to estimate the winding condition of autotransformers (ATs) employed in the China High-Speed ...
Junfei Jiang +4 more
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Frequency response analysis (FRA) is an effective approach for detecting mechanical damage in the windings of a transformer. However, the application of FRA to estimate the winding condition of autotransformers (ATs) employed in the China High-Speed ...
Junfei Jiang +4 more
semanticscholar +1 more source
IEEE transactions on industry applications, 2019
In this paper, the root cause analysis of excessive zero-sequence currents is conducted when energizing parallel autotransformers in a power system.
Yunfei Wang +3 more
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In this paper, the root cause analysis of excessive zero-sequence currents is conducted when energizing parallel autotransformers in a power system.
Yunfei Wang +3 more
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A power converter autotransformer
8th International Conference on Harmonics and Quality of Power. Proceedings (Cat. No.98EX227), 2002The objective of this paper is to present a new topology of power converters which use a special autotransformer-ADZ. This autotransformer allows independent control of voltage phasors, phase by phase. This feature permits the application of this converter in unbalanced systems. This paper analyzes the technical feasibility of the transformer converter
J.P.G. Abreu +3 more
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Autotransformers for bonneville power administration
Electrical Engineering, 1957openaire +2 more sources
A stabilized single phase electronic autotransformer
IECON'99. Conference Proceedings. 25th Annual Conference of the IEEE Industrial Electronics Society (Cat. No.99CH37029), 2003A stabilized single-phase electronic step-down autotransformer with improved switching characteristics is presented in this paper. It employs bi-directional switches in a four step PWM switching strategy for commutating inductive load currents. A low cost microcontroller is employed simplifying the control circuitry, giving robustness and reliability ...
Trabach, Emerson P +3 more
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2019 International Multi-Conference on Industrial Engineering and Modern Technologies (FarEastCon), 2019
The article describes the method of calculating the power autotransformers specific losses taking into account the tank profile and under the influence of the DC current flowing through its grounded windings.
I. Gorokhov, D. Kretov
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The article describes the method of calculating the power autotransformers specific losses taking into account the tank profile and under the influence of the DC current flowing through its grounded windings.
I. Gorokhov, D. Kretov
semanticscholar +1 more source
EHV Application of Autotransformers
IEEE Transactions on Power Apparatus and Systems, 1967The universal method of voltage transformation from EHV levels to lower voltage systems is through the use of the autotransformer. The characteristic of the autotransformer is profoundly influenced by the tertiary winding or the lack of it. This paper discusses the influence of the tertiary winding and its placement, fault magnitude and short circuit ...
G. Alexander, William. Mcnutt
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Dynamical Analysis of an Autotransformer
2020 IEEE International Conference on Power Electronics, Smart Grid and Renewable Energy (PESGRE2020), 2020The auto-transformer differs from a two winding transformer, in that the power is transferred from primary to secondary inductively as well as by conduction because there is a direct electrical connection between the primary and secondary windings of an auto-transformer.
Abhijeet Lanjewar +2 more
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On special Backlund autotransformations
Journal of Physics A: Mathematical and General, 1991All Klein-Gordon, omega xy=f ( omega ), and evolution, omega t=f ( omega , omega x,. . ., omega x.7T. .$x), equations admitting autotransformations phi =a( omega ) are found (a( omega ) is such a function of omega and its finite-order derivatives that any solution omega is mapped into a solution phi of the same equation).
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