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Aalborg Universitet Secondary Control for Reactive Power Sharing in Droop-Controlled Islanded MicroGrids
Aalborg Universitet Secondary Control for Reactive Power Sharing in Droop-Controlled Islanded MicroGrids

... sharing capabilities of inverters, employing droop control, due to mismatches in the power line parameters. So as to ensure that any differences that arise between the simulations carried out are due to the differences in power line parameters, identical parameters were used for the inverters connec ...
QBU Data sheet
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... cell drivers of Hi-End class. In contrast to analogues, they can provide rapid switching of input voltage in two directions: both up and down. QBU-Series Pockels Cell Driver is extremely flexible solution for driving of the Pockels cell that works upon any user-defined scheme (that may be pull-up, p ...
skynet electronic specification m/n : snp-z106
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... The efficiency is higher than 80% typ . while measuring at nominal line and rated load. 4.2 Hold up time The hold up time is longer than 16mS at 115VAC input and rated load , which is measured from the end of the last charging pulse to when the main output drops down to 95% output voltage. 4.3 Prote ...
PA70H – 50 watt rf amplifier for 70MHz
PA70H – 50 watt rf amplifier for 70MHz

... The ranges of output power from 45 to 55W, with input powerl about 3-5W. The system is powered by a standard voltage 13,8 V and consumes approx 7- 8A. The amplifier consist of: power transistor and additional elements, that allow for quick configuration of any device . Therefore, the board includes ...
Dependent Sources
Dependent Sources

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...  In case of step down transformers, it is an added advantage to provide tappings on h.v. side. At light loads, the l.v. side side voltage increases. It is required to decrease this voltage by adjusting the tapping on h.v. side to a position where number of turns are large. With large number of tur ...
Single Clock Generator - Asahi Kasei Microdevices
Single Clock Generator - Asahi Kasei Microdevices

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International Electrical Engineering Journal (IEEJ) Vol. 6 (2015) No.9, pp. 1988-1993
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MS Word - Sonoma State University
MS Word - Sonoma State University

... Two students are queried about the effect of passing the square-wave signal through the RC high-pass filter. They were told that the 3-dB break frequency, denoted by f-3dB, is four octaves below the fundamental frequency of the square-wave input signal. The square-wave fundamental frequency is given ...
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Q4502102105

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... Salt water aquariums are one of the most popular hobbies world wide A large portion of these aquariums use antiquated and inefficient lighting systems Many systems have little to no automatic water quality monitoring Poor water quality and temperature change are the main cause of fish deaths Potenti ...
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... through them. Materials that are good insulators are used to insulate conductors. An example is plastic insulation around electric wires. This stops people from touching the conductor and- if it is live (carrying current)- from getting a dangerous electric shock. ...
Press Release: Power factor correction
Press Release: Power factor correction

... components are PCB-free and self-healing. An integrated overpressure disconnector ensures additional safety. The capacitors are designed for a case temperature of 65 °C (hot spot temperature up to 85 °C) and a service life of up to 200,000 hours. The extensive TDK-EPC product range for power factor ...
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... load, and speed level adjustability in the subsynchronous range. Various electrical shafts providing exact speed correspondence in a pair of mechanical systems have been investigated. ...
Aalborg Universitet and Harmonics in Microgrids
Aalborg Universitet and Harmonics in Microgrids

PDF
PDF

... The common synchronizing devices use mostly voltage synchronizing transformer [2,3]. A new synchronization method under significant supply voltage distortions has been described in [4]. At high levels of voltage power supply the power electronic converter endures increasing problems related to provi ...
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Islanding

Islanding refers to the condition in which a distributed generator (DG) continues to power a location even though electrical grid power from the electric utility is no longer present. Islanding can be dangerous to utility workers, who may not realize that a circuit is still powered, and it may prevent automatic re-connection of devices. For that reason, distributed generators must detect islanding and immediately stop producing power; this is referred to as anti-islanding.The common example of islanding is a grid supply line that has solar panels attached to it. In the case of a blackout, the solar panels will continue to deliver power as long as irradiance is sufficient. In this case, the supply line becomes an ""island"" with power surrounded by a ""sea"" of unpowered lines. For this reason, solar inverters that are designed to supply power to the grid are generally required to have some sort of automatic anti-islanding circuitry in them.In intentional islanding, the generator disconnects from the grid, and forces the distributed generator to power the local circuit. This is often used as a power backup system for buildings that normally sell their excess power to the grid.
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