Results 211 to 220 of about 770 (252)
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Voltage Balance and Energy Balance in an Electrolytic Cell
1985Electrolytic current will flow from the anode to the cathode in electrolytic solution in a cell by means of transport of both cations and anions to the respective directions of the electric field. The mechanism of conduction in electrolytic solution differs from that in a metallic conductor in which free electrons move in the inverse direction of flow ...
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A Self-Balancing High-Voltage Capacitance Bridge
IEEE Transactions on Instrumentation and Measurement, 1964A self-balancing high-voltage capacitance ratio bridge, especially designed for continuous measurement of corona losses on experimental transmission lines, is described. The instrument is derived by combining a negative-feedback amplifier with a high-voltage capacitance bridge based on the current comparator principle.
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Progress in measurements with the ETF voltage balance
IEEE Transactions on Instrumentation and Measurement, 1993The results of two series of measurements with the ETF-84 voltage balance carried out in 1987 and 1988, using the classical method of weighting, were previously presented by the authors (1988) with the proviso that some systematic errors had not been accounted for.
V. Bego +3 more
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Voltage balancing using switched capacitors
Electric Power Systems Research, 1992Thyristor switched capacitors (TSCs) are a useful means of load balancing and reactive power support. The control of a general load by a binary weighted switched capacitor system is discussed in this paper along with a simple control scheme where the capacitor bank across a line pair is adjusted to control the fundamental voltage magnitude for that ...
Ledwich, G. F. +2 more
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Reactive Power Balance and Voltage Control
1997Economic considerations have generally resulted in short-term generation unit commitment practices and trading procedures placing considerable emphasis on scheduling active power to meet system demands. Voltage control is usually managed as a second step in the operation of the power system.
E. Mariani, S. S. Murthy
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A comparison of voltage balancing versus energy balancing approach for modular multilevel converters
IECON 2016 - 42nd Annual Conference of the IEEE Industrial Electronics Society, 2016The multilevel submodules (SMs) bring the added advantages of compact size and improved efficiency over standard submodules to the modular multilevel converter (MMC). These SMs have more than one floating capacitor, which stores the arm energy. Each arm of MMC has several SMs connected in series to meet the required operating voltage. The SM capacitors
Apparao Dekka +3 more
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Determination of the Volt by Means of Voltage Balances
Metrologia, 1988The determination of the value of 2e/h by means of voltage balances in the institutions: LCIE, PTB, CSIRO and ETF in Zagreb, is discussed. The construction of the balances is described. The measurement results achieved, as well as their expected and obtained partial and total measuring uncertainties, are reviewed.
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Grounding banks for balancing feeder voltages
Electrical Engineering, 1951DISTRIBUTION engineers, seeking means to provide a better balance of neutral voltage on 3-phase feeders, have suggested the use of grounding banks at one or more points along the feeder. The term 'grounding bank' is used here to mean a Y-delta transformer bank, the Y side tapped from the feeder with the Y neutral connected to the system neutral ...
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Voltage Recovery after Unbalanced and Balanced Voltage Dip in Three-Phase Systems
IEEE Power Engineering Review, 2002This paper studies the recovery of the voltage after a voltage dip due to a fault in a three-phase system. The instant of voltage recovery corresponds to the instant of fault clearing. For single-phase and phase-to-phase faults, a single point-on-wave of voltage recovery can be defined. For two-phase-to-ground and three-phase faults, the recovery takes
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Voltage Balancing Method for Hybrid MMC Using Negative Voltage Levels
2025 Energy Conversion Congress & Expo Europe (ECCE Europe)Hybrid modular multilevel converters, consisting of half-bridge and full-bridge submodules, are considered a promising topology for various high- and medium-voltage applications. However, these converters present several technical challenges due to the different topology of the submodules, such as the unbalanced voltage of submodule capacitors.
Tonti L. +3 more
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