Wyniki wyszukiwania - BazTech

1

Resonant frequency stabilization technique in series-series contactless energy transfer systems

Marcinek M., Hołub M., Kalisiak S., Pałka R.

Archives of Electrical Engineering

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2017

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Vol. 66, nr 3

547--558

EN

A technique for stabilization of resonant frequency is proposed in this paper. An additional power circuit, a compensator that allows keeping constant resonance frequency was introduced by the authors. In the presented solution the resonant circuit frequency stabilization is achieved by forcing a zero phase shift between the current and the voltage of the main switching module.

2

Metoda aktywnej kompensacji zmian indukcyjności rozproszenia w transformatorze bezrdzeniowym

Hołub M., Kalisiak S., Marcinek M., Pałka R.

Prace Naukowe Instytutu Maszyn, Napędów i Pomiarów Elektrycznych Politechniki Wrocławskiej. Studia i Materiały

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2012

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Vol. 66, nr 32, t. 2

303-309

PL

W artykule opisano sposób zasilania transformatora bezrdzeniowego, który może być wykorzystany jako element transmisyjny w systemach bezstykowego przekazywania energii. Dostarczanie energii poprzez układ CET (Contactless Energy Transfer) wymaga dobrej znajomości zmian parametrów systemu, gdyż zasilanie CET jest zależne od punktu pracy układu. Wykonano badania przy użyciu dwóch modeli przekształtnika energoelektronicznego: polowego i obwodowego. Przedstawiono rozwiązanie, dzięki któremu falownik zasilający może pracować ze stałą częstotliwością niezależną od zmieniających się parametrów systemu.

EN

Presented paper discusses a power electronic supply system topology for coreless transformers used in contactless energy transfer systems. Two models of such systems are presented based on circuit time domain analysis and FEM. An active compensator operation is discussed allowing for constant resonant frequency operation during transformer parameter change. Calculation results are presented and discussed.

3

Źródła plazmy nietermicznej dla technologii ochrony środowiska

Hołub M., Kalisiak S., Jakubowski T.

Zeszyty Naukowe Wydziału Elektrotechniki i Automatyki Politechniki Gdańskiej

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2010

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Nr 27

27-30

PL

W większości instalacji wykorzystujących technicznie plazmę nietermiczną używa się wzbudzenia poprzez pole elektryczne. Szczególnie dynamicznie rozwijającym się polem zastosowań są układy przeznaczone do generacji plazmy nietermicznej na potrzeby technologii ochrony środowiska. Artykuł prezentuje krótki przegląd typowych źródeł, podając jednocześnie podstawowe, wykorzystywane w poszczególnych przypadkach układy zasilające ze szczególnym uwzględnieniem zasilaczy energoelektronicznych. Jako ilustrację wpływu doboru układu zasilającego do konkretnej aplikacji zaprezentowano wyniki pomiarów elektrycznych oraz kamerą iCCD pojedynczego układu rozładowczego dla różnych kształtów i typów napięcia.

EN

Proposed article describes basic properties of different supply systems for non-thermal, atmospheric pressure plasma devices. Different approaches are given ranging from AC supply, pulsed supplies, microwave beams and electron-beam sources with their basic electric properties. Main supply system configurations are given and typical reactor constructions are discussed with their basic properties. As an example a laboratory discharge cell investigations are presented having different supply voltage and current waveforms. ICCD camera imaging gives a clear evidence on supply voltage shape importance. Pulsed supply with large leakage inductance on the secondary side of a high-voltage transformer yields a more diffuse character. AC supply results in a well-known filamentary discharge with typical streamer channels.

4

Przekształtniki energoelektroniczne dla technologii atmosferycznej plazmy nietermicznej (AP-NTP)

Hołub M., Kalisiak S.

Przegląd Elektrotechniczny

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2010

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R. 86, nr 1

199-206

PL

Artykuł przedstawia podstawowe właściwości systemów opartych o reaktory atmosferycznej plazmy nietermicznej (AP-NTP). Kolejno scharakteryzowano sposoby zasilania oraz konstrukcje reaktorów, podstawowe cechy źródeł zasilających oraz podstawy technik pomiarowych. W ostatniej części podsumowano doświadczenia zebrane podczas konstrukcji energoelektronicznych źródeł zasilających różnych topologii oraz ich podstawowe właściwości użytkowe.

EN

Presented paper discusses basic properties of atmospheric pressure, non-thermal plasma reactor based systems. Typical supply system properties as well as reactor construction outline is described. Concluding part summarizes experiences gained while constructing various power electronic supply systems with their basic properties.

5

Modified Fitch generator topology for non-thermal plasma applications

Kalisiak S., Hołub M.

Przegląd Elektrotechniczny

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2009

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R. 85, nr 7

134-137

EN

Non-thermal plasma discharge devices require high-voltage, high-current supply pulses. Presented solid state pulse power modulator (SSPPM) represents a modified Fitch generator topology characterized by enlarging the output voltage to supply voltage ratio to theoretically the factor of three. Output voltage waveform enables the magnetic pulse compressor cross-section minimization with the factor of 0,67 due to a unique output voltage waveform. Test stand results are given and discussed for a 10-stage prototype construction and a single stage magnetic compressor.

PL

Plazmowe urządzenia wyładowcze wymagają wysokonapięciowych i wydajnych prądowo impulsów zasilających. W artykule zaprezentowano zmodyfikowany impulsowy modulator mocy (SSPPM). W konsekwencji zredukowano przekrój poprzeczny komponentów kompresora magnetycznego ze współczynnikiem 0,67 w porównaniu z klasycznymi rozwiązaniami. W artykule zaprezentowano wyniki badań dla konstrukcji 10-stopniowego prototypu modulatora oraz pojedynczego kompresora magnetycznego.

6

Destructive oxidation of ethanol in the corona discharge reactor

Paterkowski W., Parus W., Kalisiak S.

Polish Journal of Chemical Technology

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2009

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Vol. 11, nr 4

57-62

EN

The results of investigation of ethanol destructive oxidation (model aliphatic alcohol) in a corona discharge reactor are presented. The process was performed at the temperature of 303 K in the corona discharge generator - the reactor system manufactured in our laboratory. The process temperature was kept constant by cooling down the reactor with a stream of air. The measurements were carried out using the following process parameters: the inlet ethanol concentration in the stream of gases in the range of 0.0028 to 0.132 mol/m3 (0.128 ÷ 6.086 g/m3), the gas flow velocity in the range of 0.15-0.33 m3/h (space velocity in the range of 1220 ÷ 2680 m3/(m3R źh)) and the power supply to the reactor ranged from 1.6 to 86.4 W. The active volume of the reactor was 1.23ź10-4 m3. The phenomenological method was applied for the description of the process. It was based on the assumptions that the reaction rate can be described by the first order equation in relation to the ethanol concentration and the design equation of flow tubular reactor can be applied for the description of corona reactor. The usefulness of this model was estimated using statistical methods for the analysis of the experimental results. The Statistica 6.0 software was used for this application. The first stage of this analysis showed the dependencies between the considered variables, whereas the second stage was to find the equations describing the influence of the selected process parameters on the rate of ethanol destruction. The parameters of A and B of apparent constant rate equation given in the form of Z = Aźexp(-B/P) were also determined. The results of the investigations indicated that the applied corona discharge generator - reactor system assures a high efficiency of purification of the air and industrial waste gases contaminated by ethanol. The ethanol destruction degree of αi = 0.9 was obtained at the power supply to the reactor amounting to 650 kW/m3R per unit of its active volume. The final products of the reaction were only the harmless carbon dioxide and water vapour. It has been stated that the rate of the destructive oxidation of ethanol reaction is well described by the first order equation in relation to the ethanol concentration. Under isothermal conditions, the reaction rate also depends on the power supply to the reactor. This dependence is well described by the empirical equation Z = 3,233źexp(-82,598/P). The obtained results also indicated that the method of destructive oxidation of ethanol in the corona discharge reactor can be useful for the removal of ethanol and probably other aliphatic alcohols from different gases. The described method of calculation of the real rate of the process can be successfully used in the design of corona discharge reactors applied for such processes.

7

Non-Thermal Plasma Reactor Working With Exhaust Gas System In Marine Diesel Engine

Borkowski T., Myśków J., Kalisiak S., Hołub M.

Journal of Polish CIMAC

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2008

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Vol. 3, no 1

9-13

EN

Recently, we HAVE BEEN faced with the regulation of NOx from combustion exhaust gases, because it have caused smog, acid rain, and some diseases. The largest pollution sources in the world belongs to big seagoing vessels. The vessels are responsible for an estimated 14% of emission of nitrogen from fossil fuels and 16% of the emissions of sulfur from petroleum uses into the atmosphere. The Protocol adopted in 1997 includes the new Annex VI of Marpol 73/78, which entered into force on 19 May 2005. Nitrogen oxide emissions from ships were put at around 5 million tons per year – about 7% of total global emissions. This paper describes the experimental method – using non-thermal plasma reactor to clean exhaust gases. NTP reactor was built as the aftertreatment module in exhaust gas system in marine diesel engine. The main aim is to analyze exhaust gas compounds during steady load of engine, before and after NTP module.

8

Non-thermal plasma reactor use in marine diesel engine exhaust system

Borkowski T., Myśków J., Kalisiak S., Hołub M.

Journal of KONES

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2008

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Vol. 15, No. 3

37-44

EN

Large seagoing vessels are one of the largest pollution sources in the sea environment world. Marine engines operate with extremely low quality fuels contaminated by sulphur and aromatic compounds. Vessels are responsible for an estimated 14 percent total nitrogen oxide emission and 16 percent sulphur oxide, respectively. Nitrogen oxides emissions cause serious problems including acid rain in local areas such as harbours' vicinity. All diesel engine manufacturers have been working on reducing on NOx from ships. This paper describes one of the experimental methods - using non-thermal plasma reactor. NTP reactor was built as the after-treatment module in exhaust gas system in marine diesel engine. Emission measurements were carried out on the engine with and without demonstrator NTP module. The main aim was to analyze exhaust gas compounds during real engine operation, in accordance with test cycles procedureD-2 and E-2 (ISO-8178 rules). The experiment test bench gives the innovative role in the development exhaust gas after-treatment technology for marine systems. One of the most promising methods to decrease the number of toxic compounds from exhaust gas is implementing of NTP reactor as after main treatment module. As the next steps a two-stage plasma-chemical process for the control of harmful compounds: non-thermal plasma reactor and catalyst is proposed. This combination should be more effective and probably gives reduction with more efficiency of harmful exhaust gas compounds.

9

The Experimental Analysis Of Non-Thermal Plasma Reactor Use For Marine Diesel Exhaust

Borkowski T., Myśków J., Hołub M., Kalisiak S., Müller S., Rolf-Jürgen Z.

Journal of Polish CIMAC

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2007

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Vol. 2, no 1

77-84

EN

The control of NOx (NO and NO2) emissions from marine engines remains a challenge. In recent years, there have been a number of reports show that plasma device combined with a catalyst can reduce as high as 90% of NOx in simulated diesel exhaust gas. In the case of real diesel exhaust, the beneficial role of a plasma treatment is now thought to be the oxidation of NO to NO2, and the formation of partially oxidized hydrocarbons that are more active for the catalytic reduction of NO2. This paper briefly describes research efforts aimed non-thermal plasma reactor development for ships use, and primary focused on NO oxidation conditions, functionally fitted to the engine mode of operation.

10

Development of low temperature plasma nox control system for marine diesel engine

Borkowski T., Myśków J., Hołub M., Kalisiak S.

Journal of KONES

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2007

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Vol. 14, No. 3

91-99

EN

The control of nox emissions from marine engines proves a challenge. Diesel engine manufacturers have been investigating a variety of methods with aim of reducing nox emissions. Currently, the plasma technology is undergoing rapid development in application to diesel engine exhausts. A combination of non-thermal plasma with catalysts can be referred to plasma assisted catalysts technology. This paper briefly describes research efforts aimed at non-thermal plasma reactor development for ship use with primary focus on NO oxidation condition. The part scale plasma reactor models have been designed and manufactured for the purpose of this trial. Exhaust emission plasma after-treatment module was fitted on exhaust outlet path of the marine test bed engine for fractional exhaust gas stream examination. Subsequently, the comprehensive series of trials were performed to assess the exhaust flow properties of the main exhaust channel and plasma reactor by-pass duct. Emission measurements were carried out on engine at steady-state operation. The NO reaction activity was a major task of the experiment and throughout the measurements, the engine outlet nox levels (NO and NO2) were monitored with simultaneous NO, NO2, N2O level recording after NTP reactor.

11

Cyfrowy układ sterowania wysokonapięciowym przekształtnikiem : Kicker Power Supply

Hołub M., Kalisiak S., Wojtkun M.

Elektronika : konstrukcje, technologie, zastosowania

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2007

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Vol. 48, nr 11

100-101

PL

Przedstawiono podstawy wymagań procesu projektowania oraz budowę prototypowego układu sterowania wysokonapięciowym zasilaczem typu Kicker Power Supply. Precyzyjne sterowanie elementami mocy układu w dziedzinie czasu jest istotnym problemem układu, zwłaszcza biorąc pod uwagę znaczne różnice potencjałów w układzie oraz znaczne problemy z zapewnieniem odporności elektromagnetycznej. Zaprezentowano konstrukcję opartą na szeregowym połączeniu DSP-CPLD, podstawy zastosowanego systemu wielosygnałowej komunikacji między poszczególnymi modułami układu, obszerny materiał pomiarowy i dyskusję uzyskanych wyników.

EN

The paper discusses design process and a constructed digital control system for the time-critical control pulses of a high-voltage Kicker Power Supply system. Both design considerations and the system construction based on a DSP-CPLD devices are discussed. Moreover a multi-signal communication apparatus with system modules is presented, implementing the digital communication between high-voltage modules of different voltage references. Conclusions are giver based on a voluminous research and measurement results.

12

Corona - discharge degradation of ill-smelling substances evolved from the production of phosphoric acid

Westerlich S., Jagodziński T. S., Paterkowski W., Jagodzińska E., Kalisiak S.

Polish Journal of Chemical Technology

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2005

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Vol. 7, nr 4

51-54

EN

Some attempts at applying corona reactor for the elimination of ill-smelling foulants arising in the course of phosphoric acid production by extraction were made. The investigations included preliminary tests for the employment of the reactor in the degradation of sulfur compound models and in the cleaning of stack gases.

13

Destrukcyjne utlenianie propolu-2 w reaktorze koronowym

Kalisiak S., Paterkowski W.

Inżynieria Chemiczna i Procesowa

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2001

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T. 22, z. 3

493-503

PL

Przedstawiono wyniki badań destrukcyjnego utleniania propanolu-2 z zastosowaniem reaktora koronowego i kilku wybranych układów elektrod. Badania wykazały dużą sprawność spalania alkoholu izopropylowego, dochodzącą do 95%, a produktami reakcji były ditlenek węgla i woda. Uzyskane wyniki wskazują także na znaczną efektywność proponowanych układów elektrod oraz wskazują, że jednym z najistotniejszych parametrów tego procesu jest właściwe uformowanie strefy reakcji.

EN

The concept and practical realisation of corona discharge reactor for destruction isopropyl alcohol were presented in this paper. A new electrode systems made in our laboratory was applied for oxidate destruction of isopropyl alcohol. The experimental results shown high efficiency of the reactor in destruction of isopropyl alcohol. The degree of destruction achieved the value of 95%. If has been found that only carbon dioxide and water vapour were the products of the reaction. The results of measurements indicated also high efficiency of electrode systems of corona discharge reactor which was used in the experiments. They showed also that a very important factor is the shape of reaction zone.