Search results for "Autotransformer"

showing 2 items of 2 documents

A DC current transformer for large bandwidth and high common-mode rejection

1999

A review of known magnetic-coupled current-sensing techniques is presented, Subsequently, a novel technique is introduced, based on a configuration discussed in a previous paper. The previous technique made use of a galvanomagnetic device (Hall effect sensor) to sense the magnetization of a current transformer core, so that the sum of the Hall voltage and the voltage across the secondary shunt resistor would yield a faithful copy of the input current. The technique described in this paper makes use of the same principle to obtain a high bandwidth (from DC to 1 MHz) and very high common-mode rejection current transformer, without the need for a Hall effect probe. This is achieved by subtract…

EngineeringIsolation transformerbusiness.industryLinear variable differential transformerFlyback transformerElectrical engineeringDistribution transformerCurrent transformerControl and Systems EngineeringAutotransformerElectronic engineeringEnergy efficient transformerElectrical and Electronic EngineeringbusinessDelta-wye transformerIEEE Transactions on Industrial Electronics
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Simulation of forces and 3-D field arising during power autotransformer fault due to electric arc in HV winding

2002

Forces and three-dimensional magnetic fields in high-voltage winding due to an internal short circuit in a power autotransformer are calculated with the computer package OPERA 3D. The considered damage was caused by an electric arc. The materialized deformation of the winding part confirms the simulation results.

PhysicsMechanicsMagnetostaticsElectronic Optical and Magnetic MaterialsMagnetic fieldlaw.inventionMagnetic circuitElectric arcNuclear magnetic resonanceElectromagnetic coillawAutotransformerElectrical and Electronic EngineeringTransformerShort circuitIEEE Transactions on Magnetics
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