Results 211 to 220 of about 57,952 (266)
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2018
AC generator, transformer and other related high-voltage devices are required to generate, transmit and distribute alternating voltage and current. These pieces of equipment are rated in terms of mega watt (MW) and mega voltage-ampere (MVA). Electrical appliances, such as DVD player, television, microwave oven, light bulb, refrigerator, ceiling fan and
Md. Abdus Salam, Quazi Mehbubar Rahman
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AC generator, transformer and other related high-voltage devices are required to generate, transmit and distribute alternating voltage and current. These pieces of equipment are rated in terms of mega watt (MW) and mega voltage-ampere (MVA). Electrical appliances, such as DVD player, television, microwave oven, light bulb, refrigerator, ceiling fan and
Md. Abdus Salam, Quazi Mehbubar Rahman
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2016
For our purposes, an AC network is simply a network, in which all voltage and current sources are sinusoidal with a common frequency.
Harry G. Kwatny, Karen Miu-Miller
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For our purposes, an AC network is simply a network, in which all voltage and current sources are sinusoidal with a common frequency.
Harry G. Kwatny, Karen Miu-Miller
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1976 IEEE Power Electronics Specialists Conference, 1976
The advent of readily available high power static switching devices has resulted in an almost infinite number of techniques for the control, inversion, and conditioning of A C power. The six papers presented in this session represent a good cross section of the power electronic technologies utilized for the A C power conditioning in a wide range of ...
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The advent of readily available high power static switching devices has resulted in an almost infinite number of techniques for the control, inversion, and conditioning of A C power. The six papers presented in this session represent a good cross section of the power electronic technologies utilized for the A C power conditioning in a wide range of ...
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Applications of Homotopy for solving AC Power Flow and AC Optimal Power Flow
2012 IEEE Power and Energy Society General Meeting, 2012This paper introduces a new paradigm for solving AC Power Flow (ACPF) and AC Optimal Power Flow (ACOPF) with improved convergence robustness. This approach exploits the globally convergent properties of continuation methods. Continuation methods achieve robustness by generating a sequence of nonlinear problems and repeatedly and consistently providing ...
S. Cvijic, P. Feldmann, M. Hie
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Convexification of AC optimal power flow
2014 Power Systems Computation Conference, 2014This overview paper summarizes the key elements of semidefinite relaxations of the optimal power flow problem, and discusses several open challenges.
Gan, Lingwen, Low, Steven H.
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Incorporating AC/AC Controllers into a Power Flow Formulation
2006 IEEE/PES Transmission & Distribution Conference and Exposition: Latin America, 2006This paper presents the inclusion of a pulse width modulated (PWM) AC link unified power flow controller into a power flow program; such device controls the magnitude and angular position of the injected series voltage to control the active and reactive power flow on the transmission line.
Juan Ramirez, Juan Gonzalez
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1977
In Chapter 2, we considered various methods for triggering SCRs. Of these, the most efficient method for power modulation with thyristors uses gate control. In AC circuits, the SCR can be turned on by the gate at any angle α with respect to the applied voltage. This angle α is the firing angle. Power control is obtained by varying the firing angle, and
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In Chapter 2, we considered various methods for triggering SCRs. Of these, the most efficient method for power modulation with thyristors uses gate control. In AC circuits, the SCR can be turned on by the gate at any angle α with respect to the applied voltage. This angle α is the firing angle. Power control is obtained by varying the firing angle, and
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Predictive power control of an AC/DC/AC converter
Fourtieth IAS Annual Meeting. Conference Record of the 2005 Industry Applications Conference, 2005., 2005This paper presents a new control scheme for a regenerative AC/DC/AC converter using model based predictive control. The control strategy minimizes quality functions, which represent the desired behavior of the converter. At the inverter side, the load current error is minimized, while at the input side, the active and reactive powers are controlled ...
J. Rodriguez +4 more
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A Survey of Hospital AC Power Quality
Journal of Clinical Engineering, 1989An AC power-quality survey was conducted at four hospitals of differing bed sizes in the Midwest. This power-line survey concentrated on determining the ac power quality in three areas: ICU/CCU, radiology, and the clinical chemistry lab. A summary of three months of monitoring indicates very stable RMS voltage levels but the presence of substantial ...
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Wireless power transfer based on novel physical concepts
Nature Electronics, 2021Mingzhao Song +2 more
exaly