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Effect of phase transformation onset temperature on residual stress in welded thin steel plates
(2008-12)
The effect of solid-state phase transformation at low temperature on residual stresses in butt welded ferritic thin steel plates has been examined employing a finite element (FE) code. An algorithm considering the solidstate ...
Distribution transformers modeling with angular displacement: actual values and per unit analysis
(Sociedade Brasileira de Automática, 2007-12-01)
In this work a detailed modeling of three-phase distribution transformers aimed at complementing well-known approaches is presented. Thus, incidence of angular displacement and tapping is taken into account in the proposed ...
Distribution transformers modeling with angular displacement: actual values and per unit analysis
(Sociedade Brasileira de Automática, 2007-12-01)
In this work a detailed modeling of three-phase distribution transformers aimed at complementing well-known approaches is presented. Thus, incidence of angular displacement and tapping is taken into account in the proposed ...
Measurement of in-plane displacements using the phase singularities generated by directional wavelet transforms of speckle pattern images
(Optical Society of America, 2013-03)
We present a method to determine micro and nano in-plane displacements based on the phase singularities generated by application of directional wavelet transforms to speckle pattern images. The spatial distribution of the ...
Distribution transformers modeling with angular displacement: actual values and per unit analysis
(Sociedade Brasileira de Automática, 2014)
Shielded electronic current transformer
(IEEE, 2004)
A current transformer with nominal ratio 10 A to 10 mA, intended for low-frequency applications, was developed. It includes an electronic device to reduce the magnetizing current, and a continuous shield in the secondary ...
Design of a decoupling strategy and parameter calculation for six-phase PM machines with general angular displacement
(SAGE Publications, 2017-11)
A novel decoupling model for a six-phase permanent magnet machine is proposed in this paper. The model considers the machine as two independent three-phase stator windings that are spatially shifted by a generic angle ...
Electronic system for increasing the accuracy of in-service instrument-current transformers
(IEEE, 2002)
An electronic compensator of ratio errors and phase-displacements is proposed for in-service transformers. Neither an auxiliary winding nor auxiliary core is needed; and large variations of the load connected to the secondary ...