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Dynamic Limits of a Power-Factor Preregulator
IEEE Transactions on Industrial Electronics, 2004Power-factor correction has been one of the hottest topics during the last few years and, hence, many new circuits have appeared. In general, it is assumed that preregulators based on multiplier circuits have poor dynamics and, then, a second stage is needed to improve the output voltage dynamic behavior.
Arturo Fernández +4 more
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Power Measurements at High Voltages and Low Power Factors
Transactions of the American Institute of Electrical Engineers, 1924A description is given of the apparatus for the measurement of power as low as a fraction of a watt at power factors approaching zero and voltages as high as 175 kv. to neutral. A standard make of portable wattmeter was used having maximum ranges of 1.5 watts, 37.5, 75 and 150 volts and 20 per cent power factor.
Joseph S. Carroll +2 more
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Power Factor in Polyphase Systems
Transactions of the American Institute of Electrical Engineers, 1920THE use of a number of different definitions of “power factor” as applied to unbalance polyphase system has led to much confusion. The present paper points out the mutual relations of a number of possible definitions and their relative merits for specific types of circuits.
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Transactions of the American Institute of Electrical Engineers, 1908
Based on the commonly accepted definition of power-factor, as “The ratio of true power to volt-amperes”, there can be no single factor that will exactly express such a physical relationship in a delta-connected, unsymmetrical, three-phase system.
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Based on the commonly accepted definition of power-factor, as “The ratio of true power to volt-amperes”, there can be no single factor that will exactly express such a physical relationship in a delta-connected, unsymmetrical, three-phase system.
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The improvement of power factor
Journal of the Institution of Electrical Engineers, 1923The economical limit of power factor improvement in relation to capital outlay. It is shown that if C is the capital cost of generating and transmission plant per kilowatt, and c is the cost of phase-improving plant per wattless kilovolt-ampere; then, writing α = c/C, it is economical (from the capital outlay point of view) to go on improving the power
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Wireless power transfer based on novel physical concepts
Nature Electronics, 2021Mingzhao Song +2 more
exaly
Polypyrrole/Graphene/Polyaniline Ternary Nanocomposite with High Thermoelectric Power Factor.
ACS Applied Materials and Interfaces, 2017Yihan Wang +5 more
semanticscholar +1 more source
Increase in frequency of nuclear power outages due to changing climate
Nature Energy, 2021Ali Ahmad
exaly