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Wyświetlanie 1-5 z 5
Tytuł:
DC characteristics of the SiC Schottky diodes
Autorzy:
Janke, W.
Hapka, A.
Oleksy, M.
Powiązania:
https://bibliotekanauki.pl/articles/202279.pdf
Data publikacji:
2011
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
silicon carbide
Schottky diodes
static characteristics
high-temperature
Opis:
The isothermal and non-isothermal characteristics of silicon carbide Schottky diodes in the wide range of currents and ambient temperatures are investigated in this paper. The measurements of the diodes characteristics have been performed with the use of a pulse method, with fast registration of measurement points after the diode current turning on, or with the use of a fully static method, in which the self-heating phenomenon is taken into account. Apart from the measurements, the series of numerical experiments, giving the isothermal and non-isothermal characteristics as a result, were executed. The complex, accurate numerical procedures as well as simplified analytical calculations were implemented. A good conformity of all calculation and measurement results have been obtained. In the presented investigations, for relatively high currents and ambient temperatures, the influence of self-heating on the SiC Schottky diodes static characteristics is significant. The large (even 4 V for the ambient temperature 300.C ) values of voltages corresponding to the nominal diode currents have been observed.
Źródło:
Bulletin of the Polish Academy of Sciences. Technical Sciences; 2011, 59, 2; 183-188
0239-7528
Pojawia się w:
Bulletin of the Polish Academy of Sciences. Technical Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Concept and implementation of adaptive road lighting concurrent with vehicles
Autorzy:
Zalewski, S.
Pracki, P.
Powiązania:
https://bibliotekanauki.pl/articles/200253.pdf
Data publikacji:
2019
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
lighting technology
road lighting
lighting control
light emitting diodes
Opis:
The paper presents the authors’ concept of an adaptive road lighting that is concurrent with vehicles moving on roads. The lighting system is based on luminaires with light emitting diodes. The authors describe the operation of the adaptive road lighting system and point out benefits and limitations of the solution. The theoretical considerations are supported by an analysis of the installed and working system that was implemented at Bożeny street in Poznan, Poland. The system was also evaluated by the residents living near the street.
Źródło:
Bulletin of the Polish Academy of Sciences. Technical Sciences; 2019, 67, 6; 1117-1124
0239-7528
Pojawia się w:
Bulletin of the Polish Academy of Sciences. Technical Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Examinations of Selected Thermal Properties of Packages of SiC Schottky Diodes
Autorzy:
Bisewski, D.
Myśliwiec, M.
Górecki, K.
Kisiel, R.
Zarębski, J.
Powiązania:
https://bibliotekanauki.pl/articles/220523.pdf
Data publikacji:
2016
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
Schottky diodes
transient thermal impedance
thermal measurements
silicon carbide
packaging
Opis:
This paper describes the study of thermal properties of packages of silicon carbide Schottky diodes. In the paper the packaging process of Schottky diodes, the measuring method of thermal parameters, as well as the results of measurements are presented. The measured waveforms of transient thermal impedance of the examined diodes are compared with the waveforms of this parameter measured for commercially available Schottky diodes.
Źródło:
Metrology and Measurement Systems; 2016, 23, 3; 451-459
0860-8229
Pojawia się w:
Metrology and Measurement Systems
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Reconfigurable Antennas: the State of the Art
Autorzy:
Yashchyshyn, Y.
Powiązania:
https://bibliotekanauki.pl/articles/226828.pdf
Data publikacji:
2010
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
antenna arrays
reconfigurable antennas
semiconductor devices
MEMS switches
surface PIN diodes
Opis:
The paper provides an overview of the state of the art in the area of reconfigurable antennas. This emerging area has been rapidly developing in the recent years. This article brings a comprehensive summary of the high quality applied and fundamental research contributions in the above-mentioned field. A broad spectrum of topics is covered, reflecting the areas in which Institute of Radioelectronics's expertise is recognized worldwide.
Źródło:
International Journal of Electronics and Telecommunications; 2010, 56, 3; 319-326
2300-1933
Pojawia się w:
International Journal of Electronics and Telecommunications
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Effects of space vector modulation strategy on hybrid (Si-SiC) inverter losses
Autorzy:
Bonisławski, M.
Hołub, M.
Powiązania:
https://bibliotekanauki.pl/articles/140592.pdf
Data publikacji:
2012
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
przekształtnik hybrydowy
elektronika energetyczna
urządzenie z szeroką przerwą energetyczną
SVPWM
DPWM
power electronic inverter
SiC diodes
hybrid inverter
wide band gap devices
Opis:
This work summarizes efficiency measurement results of a full bridge, 3 phase inverter composed of state-of-the-art Si IGBT transistors and Si or SiC diodes. Different (symmetrical and discontinuous) space vector modulation strategies were chosen in order to examine their influence (together with modulation frequency) on inverter losses. Induction machine was used as load, different load points were examined. Results clearly show, that proper modulation strategy, minimizing the switching losses of semiconductor switches, can increase the overall output efficiency at about 1% in case of both silicon and hybrid constructions. The drawback of DPWM approach is connected with the decreased quality of inverter output current. Hybrid technology can also improve the output efficiency at about 1% when compared to traditional constructions, but only in case of elevated switching frequencies. At low frequencies (below 10 kHz) modern semiconductor offer comparable results at much lower device costs.
Źródło:
Archives of Electrical Engineering; 2012, 61, 1; 69-75
1427-4221
2300-2506
Pojawia się w:
Archives of Electrical Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-5 z 5

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