Results 341 to 350 of about 24,313,007 (383)
Some of the next articles are maybe not open access.

High frequency cycloconverter control

Proceedings of 1994 Power Electronics Specialist Conference - PESC'94, 2002
A 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
openaire   +3 more sources

An adaptive controller for megawatt frequency control

ACE '90. Proceedings of [XVI Annual Convention and Exhibition of the IEEE In India], 2005
In 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
openaire   +2 more sources

Cooperation-Based Distributed Economic MPC for Economic Load Dispatch and Load Frequency Control of Interconnected Power Systems

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
semanticscholar   +1 more source

Frequency control of load swings

Electrical Engineering, 1942
The 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
openaire   +3 more sources

Control of respiratory frequency

Journal of Applied Physiology, 1960
Previous 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.
openaire   +2 more sources

MEMS for frequency control

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 ...
openaire   +2 more sources

Traceability of frequency control systems

Proceedings of International Frequency Control Symposium, 2002
Traceability 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.
openaire   +3 more sources

Time-Delayed Stabilizing Secondary Load Frequency Control of Shipboard Microgrids

IEEE Systems Journal, 2019
This 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
semanticscholar   +1 more source

Automatic Frequency Control

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.
openaire   +2 more sources

All-optical frequency-controlled frequency switch

Journal of the Optical Society of America B, 2010
Orthogonally 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
openaire   +2 more sources

Home - About - Disclaimer - Privacy