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Feldverlauf und spezifische Bremskraft in Wirbelstrombremsen
Springer Science and Business Media LLC - Tập 44 - Trang 330-330 - 1959
A. Grün
Zur Berechnung von Schaltvorgängen mit nicht konstanter Induktivität
Springer Science and Business Media LLC - Tập 28 - Trang 664-670 - 1934
J. Hak
Parameter identification of vector-controlled induction machines
Springer Science and Business Media LLC - Tập 79 - Trang 39-46 - 1996
P. J. Chrzan, H. Klaassen
This paper describes the identification of electromagnetic time constants and stator resistance for field oriented induction motor drives. The model of an induction motor at standstill in terms of state representation is discussed. A direct continuous-time identification from the standstill time-domain test data is based on the parametrized observer state vector. In a laboratory configuration the ... hiện toàn bộ
Voltage stability improvement with coordinated ULTC–STATCOM controller and VSC-HVDC in high wind penetration cases
Springer Science and Business Media LLC - Tập 103 - Trang 837-851 - 2020
Kadir Abaci, Volkan Yamaçli, Zhe Chen
In recent years, implementing renewable energy systems such as wind power systems into interconnected grids play a vital role in energy management and production. Besides the good aspects of this energy policy, there may be some undesirable cases if not controlled. Increasing penetration of wind generation into the electricity grid negatively affects the power system stability and the required rea... hiện toàn bộ
Electrochemical gas sensors can supplement chromatography-based DGA
Springer Science and Business Media LLC - Tập 87 - Trang 137-142 - 2004
P. Zylka
Shortening a time gap between oil sampling and its analysis as well as a rapid and correct interpretation of dissolved gas analysis (DGA) results are crucial for effective screening of faulty transformers in predictive-oriented equipment maintenance. Introductory DGA performed quickly by means of a developed portable analyzer, fitted with electrochemical gas sensors, can supplement classical chrom... hiện toàn bộ
Der Durchschlag fester Isolatoren
Springer Science and Business Media LLC - Tập 13 - Trang 153-174 - 1924
W. Rogowski
A slack-bus-independent loss sensitivity approach for optimal day-ahead generation scheduling
Springer Science and Business Media LLC - Tập 104 - Trang 421-434 - 2021
Nguyen Huy Phuoc, Weerakorn Ongsakul, Nimal Madhu Manjiparambil, Nikhil Sasidharan
In a power system, the incurred transmission loss and the associated sensitivity factors are dependent on the selection of the slack bus and the dispatch. In this paper, a fast two-stage, hydro-thermal generation scheduling process, which is also inclusive of the system power loss, is proposed. A novel approach towards estimating power loss sensitivity factors is presented which is independent of ... hiện toàn bộ
Leitungsgebundene Ausbreitung elektromagnetischer Wellen in räumlich ausgedehnten Hochspannungs-Versuchskreisen
Springer Science and Business Media LLC - Tập 57 - Trang 253-264 - 1975
H. Lührmann
Der Aufbau transienter leitungsgebundener Felder wird für einen in der Hochspannungs-Meßtechnik gebräuchlichen, räumlich ausgedehnten Kreis berechnet. Als Anwendung wird eine Formel zur genaueren Berechnung des Wellenwiderstandes eines zylindrischen Leiters senkrecht zu einer Ebene abgeleitet. Darüberhinaus ergeben die Untersuchungen Aufschluß über die Beeinflussung von Spannungsteilern durch elek... hiện toàn bộ
Experimental investigations of commercial gas discharge tube “Osram St 111” using time lag measuring method
Springer Science and Business Media LLC - Tập 99 - Trang 63-72 - 2016
Čedomir A. Maluckov, Miodrag K. Radović, Goran S. Ristić
The results of the breakdown time lags obtained by commercial “OSRAM St 111” gas diode are presented. The memory curves for different voltages (for 220, 250 and 300 V) are shown. The analysis of the experimentally obtained distributions (histograms and Laue distributions) for different voltages (for 220, 250 and 300 V) and different relaxation times (from 1 to 1500 ms), as well as the analysis of ... hiện toàn bộ
Der Einfluß elektrischer Felder auf Organismen
Springer Science and Business Media LLC - Tập 60 - Trang 267-275 - 1978
R. Waibel, S. Schuy
Ungenaue Angaben über die Versuchsbedingungen und weitgehend sich widersprechende Ergebnisse kennzeichnen den derzeitigen Stand des Wissens über den Einfluß elektrischer 50 Hz-Felder auf den Menschen und auf das Tier.—In der vorliegenden Arbeit wird über umfangreiche Kurzzeituntersuchungen berichtet, bei denen mehrere physiologische Größen unter dem Feldeinfluß gemessen und analysiert wurden.—Durc... hiện toàn bộ
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