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1

Influence of element’s parameters on the output characteristics of the voltage multiplier when powered from the inverter in resonance conditions

Mućko Jan

Archives of Electrical Engineering

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2024

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Vol. 73, nr 2

265--279

EN

The article presents the influence of the parameters of the high voltage direct current (HVDC) generator with a multiplier, such as: leakage inductance of the high voltage (HV) transformer, capacitance, and the number of multiplier stages on the value of the output voltage, voltage ripple, power and frequency of the supply voltage as a function of the output current. The presented characteristics were obtained under the synchronization conditions of the inverter output voltage and current that powers the multiplier. The presented results will be useful when designing HVDC generators with Cockcroft-Walton multipliers.

2

MATLAB modelling of double sided photovoltaic cell module

Zhen Yan, Zuyu Wu, Ninghui Zhu, Ligen Yuan, Yu Chen Jing

Power Electronics and Drives

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2021

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Vol. 6 (41)

12--25

EN

In this paper, the equatorial coordinate system is taken as the celestial coordinates, the double-sided photovoltaic module irradiance model is established by using the MATLAB simulation software, and the double-sided photovoltaic module irradiance model is combined with the photovoltaic module model (Jianhui (2001)) to form the mathematical model of the real-time generation system of double-sided photovoltaic modules. The effectiveness of the simulation model was verified by building an experimental platform, and the output characteristics of the optimal line spacing between the double-sided p-v module and the single-sided p-v module were further tested and compared.

3

Analysis and simulation of dynamic properties for the DFB laser

Šalí P., Róka R.

Przegląd Elektrotechniczny

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2018

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R. 94, nr 7

17--20

EN

The numerical analysis of dynamic properties of the distributed feedback laser (DFB) is presented. The model is based on coupled rate equations, which can describe mutual relations between a photon number, an electron number and an optical phase in the active region of the DFB laser. The presented numerical approach includes intrinsic fluctuations of laser parameters and laser noises caused by these fluctuations to the model using the fourth order Runge-Kutta method. The DFB model can be consequently applied for a purpose of advanced simulations performed in the complete optical transmission model.

PL

.Zaprezentowano analizę numeryczną w łaściwości dynamicznych lasera typu DFB. Model bazuje na sprzężonych równaniach opisującychwzaje,mne relacje miedzy liczbą fotonów, liczbą elektronmów I fazą optyczną cześci aktywnej lasera. W modelowaniiu wykorzystano metodę Runge-Kutta czwartego rzędu. W opracowanym modelu uwzględnmiono możliwość fluktuacji parametrów lasera i wynikające stąd szumy.

4

Simulation of neutron irradiation influence on p-n-p bipolar transistor characteristics

Miskiewicz S., Komarov F., Komarov A., Żukowski P., Michailov V.

Przegląd Elektrotechniczny

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2016

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R. 92, nr 11

236--238

EN

We have developed numerical model and software to simulate the ionizing radiation influence on the bipolar transistor parameters. The software allows to calculate the input and output characteristics, the current transmission coefficient and other parameters under the irradiation for various temperatures, base and collector voltages.

PL

Opracowaliśmy model numeryczny i oprogramowanie do symulacji wpływu promieniowania jonizującego na parametry tranzystorów bipolarnych. Oprogramowanie pozwala obliczyć parametry wejściowe i wyjściowe, aktualny współczynnik transmisji i inne parametry na podstawie napromieniowania dla różnych temperatur, napięć bazy i kolektora.

5

Charakterystyki wejściowe i wyjściowe przetwornic napięcia BUCK i BOOST z uwzględnieniem rezystancji pasożytniczych

Janke W., Walczak M., Bączek M.

Przegląd Elektrotechniczny

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2012

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R. 88, nr 12b

291-294

PL

Przeprowadzono badania symulacyjne i pomiarowe charakterystyk wejściowych i wyjściowych impulsowych przetwornic napięcia stałego. Wyprowadzono wzory analityczne opisujące te charakterystyki dla przetwornic BUCK i BOOST z uwzględnieniem pasożytniczych rezystancji poszczególnych elementów przetwornic. Symulacje przeprowadzono dla różnych wartości elementów pasożytniczych w szczególności także dla przetwornic idealnych. Wartości elementów przyjęte w części symulacji otrzymano na podstawie pomiarów dla wykonanego modelu przetwornicy. Wykonano także pomiary charakterystyk wejściowych i wyjściowych i porównano wyniki z przebiegami symulacyjnymi. Podstawowym wynikiem pracy jest stwierdzenie, że wartości elementów pasożytniczych silnie wpływają na przebiegi charakterystyk wejściowych i wyjściowych przetwornic napięcia.

EN

The input and output characteristics of switch-mode DC-DC power converters have been investigated by simulations and measurements. The analytical formulas describing these characteristics have been derived for BUCK and BOOST converters with the parasitic resistances of components taken into account. Simulations based on the above formulas are performed for various values of parasitic resistances and for ideal converters as well. The measurements of the parasitic resistances of the converter components and the input characteristics of converters are also presented. It is observed that the values of parasitic resistances of converter components strongly influence their input and output characteristics.

6

Output characteristics of step-down (Buck) power converter

Janke W., Bączek M., Walczak M.

Bulletin of the Polish Academy of Sciences. Technical Sciences

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2012

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Vol. 60, nr 4

751-755

EN

The output characteristics of switched-mode dc-dc buck power converter are discussed. The shape of output characteristics is especially important for converters used for supplying modern processors. An output impedance is usually used for description of output characteristics. Many efforts are described in the literature to obtain the satisfastory features of closed-loop output impedance. Another approach, presented in the paper, is based on the concept of the output voltage response corresponding to the load conductance change, and is expressed by hr transmittance. Simulations of output characteristics of the buck converter in frequency and in time-domain have been performed for the ideal case as well as for a more realistic situation, with the parasitic resistances of converter elements included. The measurement results differ substantially from characteristics calculated for an ideal converter and are in good consistency with simulations including parasitics.

7

Modelling of laser pumped intracavity frequency doubled laser.

Jabczyński J.K.

Optica Applicata

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2000

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Vol. 30, nr 1

161-171

EN

A model of an intracavity frequency doubled laser pumped by a laser beam was elaborated. The effects connected with mode matching, thermal lensing, pump induced diffraction losses, as well as parameters of frequency conversion and geometry of cavity were considered. An analytical model of the cavity with an internal lens and thermal lensing was derived to optimize output characteristics. Two types of cavity (with and without internal lens) were analyzed and the best configurations with respect to second harmonic output power were found for both cases. The pump induced diffraction losses were found to limit the output power of the frequency doubled laser for high pump levels.