Results 131 to 140 of about 268,494 (187)

Discovery of Cenozoic magmatic ridges and tectonics off northern Victoria Land provides new insights into the geodynamics of the Antarctic margin. [PDF]

open access: yesSci Rep
Civile D   +11 more
europepmc   +1 more source

Dynamic Lissajous patterns for real time identification and localization of power quality disturbance. [PDF]

open access: yesSci Rep
Sinha P   +8 more
europepmc   +1 more source

Fault Current Characteristics of the DFIG under Asymmetrical Fault Conditions [PDF]

open access: yesEnergies, 2015
During non-severe fault conditions, crowbar protection is not activated and the rotor windings of a doubly-fed induction generator (DFIG) are excited by the AC/DC/AC converter. Meanwhile, under asymmetrical fault conditions, the electrical variables oscillate at twice the grid frequency in synchronous dq frame.
Zhe Zhang, Xianggen Yin, Fan Xiao
exaly   +3 more sources

A new digital relay for generator protection against asymmetrical faults

open access: yesIEEE Transactions on Power Delivery, 2002
Under unbalanced conditions the three phase instantaneous power oscillates at twice the power system frequency. The magnitude of these oscillations can be used as a measure of the system unbalance.
Ömer Usta, M A Redfern
exaly   +2 more sources

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