Results 341 to 350 of about 24,313,007 (383)
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High frequency cycloconverter control
Proceedings of 1994 Power Electronics Specialist Conference - PESC'94, 2002A 6-pulse noncirculating current cycloconverter (833 Hz to 50 Hz) is used as frequency changer for a high-frequency permanent magnet generator. This generator-power converter unit is driven by a high efficiency, high-speed gas turbine in the power range of 250 kW to 870 kW.
P.P.J. van den Bosch, N.H.M. Hofmeester
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An adaptive controller for megawatt frequency control
ACE '90. Proceedings of [XVI Annual Convention and Exhibition of the IEEE In India], 2005In power system operation and control applications, for which adaptive controllers are increasingly seen to be a potential successors to the traditional PID controllers a major aspect of the control problem is the elimination of the offset. In the present paper an adaptive controller is presented for megawatt frequency control to completely eliminate ...
M.L. Chanana +3 more
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IEEE Transactions on Power Systems, 2019
In this letter, a distributed economic model predictive control (EMPC) strategy is proposed for economic load dispatch and load frequency control of interconnected power systems.
Yubin Jia +3 more
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In this letter, a distributed economic model predictive control (EMPC) strategy is proposed for economic load dispatch and load frequency control of interconnected power systems.
Yubin Jia +3 more
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Frequency control of load swings
Electrical Engineering, 1942The Consolidated Edison Company made a series of tests to determine the cause and extent of system load swings on generators and tie feeders. The results were reported in detail in a previous paper.1 An analysis of these tests indicated ways in which our load dispatching methods could be improved.
R. J. Lombard, J. E. Mccormack
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Control of respiratory frequency
Journal of Applied Physiology, 1960Previous work has shown that for a given level of alveolar ventilation there is a particular respiratory frequency which is least costly in terms of respiratory work. There is also a particular frequency, usually a different one, which is least costly in terms of average force of the respiratory muscles.
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2009 IEEE International Frequency Control Symposium Joint with the 22nd European Frequency and Time forum, 2009
Due to their need for high frequency selectivity and low noise frequency manipulation, portable wireless communication transceivers continue to rely on high-Q, off-chip resonator technologies that must interface with transistor electronics at the board-level, thus contributing to the substantial percentage (often more than 50%) of portable transceiver ...
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Due to their need for high frequency selectivity and low noise frequency manipulation, portable wireless communication transceivers continue to rely on high-Q, off-chip resonator technologies that must interface with transistor electronics at the board-level, thus contributing to the substantial percentage (often more than 50%) of portable transceiver ...
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Traceability of frequency control systems
Proceedings of International Frequency Control Symposium, 2002Traceability of frequency transfers in frequency control systems needs to be unambiguously defined and measured. Until now the Allan deviation has been used as a good approximation because exact calculation seemed to be beyond practicality. With the help of the A-B structure factors, which we developed [1], it is almost trivial to link the standard ...
Boulanger, J., Douglas, R. J.
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Time-Delayed Stabilizing Secondary Load Frequency Control of Shipboard Microgrids
IEEE Systems Journal, 2019This paper proposes a novel controller for the secondary load frequency control of a shipboard microgrid. The suggested controller is based on the linear matrix inequality technique and the Lyapunov stability theory.
N. Vafamand +4 more
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Proceedings of the IRE, 1935
A system is described for electronic control of the local oscillator frequency in a superheterodyne receiver for the purpose of centering the signal carrier in the intermediate-frequency band in spite of inaccuracies of manual tuning and oscillator drift.
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A system is described for electronic control of the local oscillator frequency in a superheterodyne receiver for the purpose of centering the signal carrier in the intermediate-frequency band in spite of inaccuracies of manual tuning and oscillator drift.
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All-optical frequency-controlled frequency switch
Journal of the Optical Society of America B, 2010Orthogonally polarized optical feedback has been proven to act on the frequency of semiconductor lasers. The coupling of this feedback to a nonlinear filter results in bistability for the frequency of the laser output [Phys. Rev. Lett.94, 173902 (2005)].
T. Sorrentino +4 more
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