Results 261 to 270 of about 9,101,005 (318)
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Smart Induction Motor Variable Frequency Drives for Primary Frequency Regulation
IEEE Transactions on Energy Conversion, 2020This article proposes an induction motor variable frequency drive to investigate its potential in handling smart grid's frequency. This can thus mitigate the grid reliance on expensive power plants. To this end, a primary frequency controller is presented enabling the drive to reduce its power in proportion to grid frequency drop.
Rasoul Azizipanah-Abarghooee +1 more
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, 2021
Frequency stability has been a significant issue for a long time for the proper operation of isolated microgrids. Most distributed energy sources have converter-based interface and do not normally respond to frequency deviations.
Kavita Singh, Zaheeruddin
semanticscholar +1 more source
Frequency stability has been a significant issue for a long time for the proper operation of isolated microgrids. Most distributed energy sources have converter-based interface and do not normally respond to frequency deviations.
Kavita Singh, Zaheeruddin
semanticscholar +1 more source
High frequency switching regulator techniques
1978 IEEE Power Electronics Specialists Conference, 1978The design and performance of non-resonant switching regulators operating at frequencies above 300kHz are discussed. The circuit arrangements and performance characteristics for a 150W, 600kHz inverter, a 25W, 300kHz multi-output quasisquarewave converter, a 2W, 600kHz buck-boost converter, and a 200W, 300kHz boost converter are presented.
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Unit Commitment With Primary Frequency Regulation Constraints
IEEE Transactions on Power Systems, 2005Summary form only given. The unit commitment problem with tertiary reserve requirements has been broadly studied. Such reserves, when needed, are centrally deployed with relatively slow time constants of the order of minutes. In contrast, the scheduling of units offering primary frequency regulation reserve deployable in a decentralized manner within ...
J. Restrepo, F. Galiana
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, 2021
Due to the increasing penetration of photovoltaic (PV) systems, PV plants are required to provide a full range of ancillary services to power grids, including frequency support services, which must maintain a certain power reserve.
Cheng Zhong, Yang Zhou, Gangui Yan
semanticscholar +1 more source
Due to the increasing penetration of photovoltaic (PV) systems, PV plants are required to provide a full range of ancillary services to power grids, including frequency support services, which must maintain a certain power reserve.
Cheng Zhong, Yang Zhou, Gangui Yan
semanticscholar +1 more source
IEEE Transactions on Industrial Informatics, 2019
This paper is concerned with active power sharing and frequency regulation in an islanded microgrid under event-triggered communication. A distributed secondary control scheme with a sampled-data-based event-triggered communication mechanism is proposed ...
Lei Ding, Q. Han, Xianming Zhang
semanticscholar +1 more source
This paper is concerned with active power sharing and frequency regulation in an islanded microgrid under event-triggered communication. A distributed secondary control scheme with a sampled-data-based event-triggered communication mechanism is proposed ...
Lei Ding, Q. Han, Xianming Zhang
semanticscholar +1 more source
Bad Regulation: High-Frequency Trading
2015As we saw in Chapter 8, the global financial crisis ignited interest in the regulation of short selling on the grounds that it led, among other things, to market collapse and the bankruptcy of some companies. Since 2010, however, interest has shifted to high-frequency trading (HFT), with calls mounting to regulate this style of trading on several ...
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Autonomous regulation of stem cell frequency
Experimental Hematology, 2000Abstract Lineage restricted growth factors regulate peripheral blood cell homeostasis. However, mechanisms that affect the frequency of primitive stem cells with long term proliferative potential remain largely unknown. We have shown that stem cell numbers in DBA/2 (D2) mice are higher than in C57BL/6 (B6) mice.
G de Haan +6 more
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The Arabian journal for science and engineering, 2023
Gauri Sahoo +4 more
semanticscholar +1 more source
Gauri Sahoo +4 more
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A wide frequency-regulated precision OCXO
2009 IEEE International Frequency Control Symposium Joint with the 22nd European Frequency and Time forum, 2009High precision OCXO based on SC cut overtone crystals can show very high frequency stability and aging. However, its frequency regulation range by voltage control is not wide. When high precision OCXO is used as the standard of precise controllable measuring instruments, especially the precision slave VCOCXO, in allusion to widen frequency comparison ...
Wei Zhou +3 more
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