Results 231 to 240 of about 548,529 (284)

Transients and the Laplace Transform

1991
In a circuit which contains one or more energy storage element, a transient state will exist whenever the energy condition in the circuit changes, until the new steady state is reached. This may be caused by changing the applied voltage or current, or by changing any of the circuit elements, usually by opening or closing switches.
Noel M. Morris, Frank W. Senior
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Transient Temperature Rise of Transformers

Transactions of the American Institute of Electrical Engineers. Part III: Power Apparatus and Systems, 1962
Equations are developed for transient temperature rise of transformer cooling medium and various types of transformer coils over their ambient medium. These are evaluated on a percent temperature rise base for the corresponding powers of the watts dissipated for transformer cooling medium and various types of transformer coils.
L. C. Whitman, J. E. Holcomb
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Capacitor switching and transformer transients

IEEE Transactions on Power Delivery, 1988
The impact of capacitor switching on transformer transients is evaluated. Two specific transformer failure events are described. Each of these failures coincided with the switching of a capacitor bank some distance away from the transformer. The causes of these failures are evaluated, and field-test transient voltage waveforms are duplicated by ...
R.S. Bayless, J.D. Selman, D.E. Truax, W.E. Reid   +3 more
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Characterization of transients in transformers using discrete wavelet transforms

IEEE Transactions on Power Systems, 2003
This paper presents the characterization of transients resulting from faults in transformers using discrete wavelet transform (DWT). This characterization will aid in the development of an automatic detection method for internal incipient faults in the transformers.
K.L. Butler-Purry, M. Bagriyanik
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Transient voltages in rectifier transformers

Transactions of the American Institute of Electrical Engineers, Part II: Applications and Industry, 1959
This paper discusses transient-voltage phenomena which occur in rectifier circuits involving mercury-vapor hot-cathode tubes commonly used as power sources in many electronic equipments such as broadcast transmitters, high-frequency industrial-heating applications and the like.
B. C. Biega, H. W. Lord
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Laplace Transforms and the Amplitude Transients

International Journal of Electrical Engineering & Education, 1988
The direct Laplace transform with a finite upper limit of the integral is considered. This form is useful for evaluation of transients when the input is an amplitude modulated cosinusoidal pulse. In this case the inverse transform is easily calculated and the equation of amplitude transients can be established.
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Numerical Calculations of Three-Phase Transformer Transients

IEEE Transactions on Power Delivery, 2004
A three-phase, two-winding transformer model is presented in this paper. Nonlinear magnetizing curves are piecewise linearized, while the input winding capacitances are lumped onto the transformer terminals. A stiff system of differential equations in a state space, describing the transformer transient behavior, is solved using the -stable backward ...
Tokić, Amir, Madžarević, Vlado, Uglešić, Ivo   +2 more
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Transients in the Transform Domain

2018
In this first example you’ll see the full power of the Laplace transform in doing a traditional transient analysis. (You’ll also experience its full grubbiness!) Figure 4.1 shows a circuit that is suddenly hit by a unit step voltage v(t) = u(t), and our problem is to determine the resulting voltage e(t).
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Transient modeling with a frequency-transform subspace algorithm and "transient+sinusoidal" scheme

2002 14th International Conference on Digital Signal Processing Proceedings. DSP 2002 (Cat. No.02TH8628), 2003
We present an efficient modeling method for strong transient character audio signals. It is shown that the parametric non-stationary exponentially damped sinusoids (EDS) model permits good performance for time domain modeling of quasi-stationary signals or "weak" transients.
Rémy Boyer, Slim Essid
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TRANSIENT AND STABLE TRANSFORMATION IN MANGO BY PARTICLE BOMBARDMENT

Acta Horticulturae, 2000
Genetic manipulation of plants requires a system for the introduction of foreign DNA into the cells. Particle Bombardment offers a rapid and efficient method for the delivery of DNA for transient and stable transformation studies. In this work we describe a system using mango proembryogenic masses of two polyembryonic cultivars ('Carabao' and ...
Cruz-Hernandez, A., Town, L. J., Cavallaro, A. S., Botella, J. R.   +3 more
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