Wyniki wyszukiwania - BazTech

1

Modelling of two-phase single-leg matrix converter using lt spice circuit simulator

Dobrucky B., Konarik R.

TTS Technika Transportu Szynowego

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2016

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R. 23, nr 12

69--72

EN

The paper deals with two-phase one-leg matrix converter with minimum switching devices. Main emphasis is laid on modelling and simulation of a new type of single-phase supplied AC/AC converter with two phase outputs. It consists of one-leg half-bridge matrix converter loaded by the resistive-inductive load in series connection. As harmonic analysis of the voltage of both phases gives very high value of total harmonic distortion (roughly 86 %) the current waveforms should be improved by using of serial LC filter – which brings much more suitable value of THD (5 % - 8 %) acceptable for application. Real simulation results using LT Spice circuit simulator under RL loading are given in the paper

2

Possibilities of 2-phase electronic converters for electric vehicle drives

Dobrucky B., Kassa J., Spanik P., Prazenica M.

Logistyka

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2012

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nr 3

EN

The paper deals with power electronic two-phase propulsion system with IM/SMPMmotors for electric vehicle drives applications. The proposed system consists of two-stage converter comprises: resonant LLC converter with AC output, two-phase matrix converter commutated by HF AC input voltage, and two-phase induction/synchronous motors. Such a system with AC interlink, in comparison with currently used conventional system configurations features a good efficiency of electronic converters (due to soft switching of both converters) and also good torque-speed characteristics of two-phase AC motors. Results of simulation compared to experimental verification carried-out ones are in good accordance between them.

PL

Artykuł dotyczy zastosowania dwufazowego przekształtnika mocy w napędach z silnikiem indukcyjnym lub silnikiem synchronicznym z magnesami trwałymi (z ang. IM/PMSM) dla urządzeń transportowych. System ten składa się z: przetwornika rezonansowego LLC z wyjściem AC, dwufazowego przetwornika matrycowego komutowanego napięciem wejściowym AC o wysokiej częstotliwości i z dwufazowego silnika indukcyjnego/ synchronicznego. Proponowany system cechuje się mniejszą ilością urządzeń półprzewodnikowych, większą sprawnością przetworników mocy oraz dobrą charakterystyką mechaniczną dwufazowych silników prądu zmiennego w porównaniu z konwencjonalnymi systemami. Wyniki z symulacji oraz ich weryfikacja na podstawie wyników z laboratorium przedstawiają dobry accordance.

3

Possibilities of 2-phase electronic converters for electric vehicle drives

Dobrucky B., Kassa J., Spanik P., Prazenica M.

Logistyka

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2011

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nr 3

EN

The paper deals with power electronic two-phase propulsion system with IM/SMPM motors for electric vehicle drives applications. The proposed system consists of two-stage converter comprises: resonant LLC converter with AC output, two-phase matrix converter commutated by HF AC input voltage, and two-phase induction/synchronous motors. Such a system with AC interlink, in comparison with currently used conventional system configurations features a good efficiency of electronic converters (due to soft switching of both converters) and also good torque-speed characteristics of two-phase AC motors. Results of simulation compared to experimental verification carried-out ones are in good accordance between them.

PL

Artykuł dotyczy zastosowania dwufazowego przekształtnika mocy w napędach z silnikiem indukcyjnym lub silnikiem synchronicznym z magnesami trwałymi (z ang. IM/PMSM) dla urządzeń transportowych. System ten składa się z: przetwornika rezonansowego LLC z wyjściem AC, dwufazowego przetwornika matrycowego komutowanego napięciem wejściowym AC o wysokiej częstotliwości i z dwufazowego silnika indukcyjnego/ synchronicznego. Proponowany system cechuje się mniejszą ilością urządzeń półprzewodnikowych, większą sprawnością przetworników mocy oraz dobrą charakterystyką mechaniczną dwufazowych silników prądu zmiennego w porównaniu z konwencjonalnymi systemami. Wyniki z symulacji oraz ich weryfikacja na podstawie wyników z laboratorium przedstawiają dobry accordance.

4

Dynamic voltage restoring with instantaneous determination of load reactive power

Dobrucky B., Altus J., Pokorny M.

Zeszyty Naukowe. Elektryka / Politechnika Opolska

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2008

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Vol. 323, z. 60

95-96

EN

The paper deals with the high dynamic properties of singlephase dynamic voltage restorer (DVR) using instantaneous power factor determination. Providing virtual approach and application of orthogonal transform theory the ordinary single-phase system can be transformed into equivalent two-axes system. The new thought is based on the idea that ordinary single-phase quantity can be complemented by virtual fictitious phase so that both of them will create orthogonal system, as is usual in three-phase systems. Application of above-mentioned theory makes it possible to use complex methods of analysis as instantaneous active, reactive power and power factor determination. The later is necessary for using of minimum energy control for dynamic voltage restorer. Practical application of instantaneous active, reactive power and power factor determination method uses moving average technique. The paper shows some examples of the simulation experiments results, which proved fast dynamic response of DVR.

5

Single-phase power active filter using instantaneous reactive power theory - theoretical approach

Altus J., Michalik J., Dobrucky B., Viet L.

Zeszyty Naukowe. Elektryka / Politechnika Opolska

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2005

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Vol. 299, z. 55

7-16

EN

The paper deals with the new method of analysis, synthesis and experimentation of single-phase power active filters. By using a new particular transformation theory, the ordinary single-phase system can be transformed into an equivalent two-axes orthogonal one. The new original thought is based on the idea that ordinary single-phase quantity can be complemented by fictitious second phase so that both of them will create an orthogonal system, as is usual in three-phase systems, in spite of [1]. Application of the above theory makes it possible to use complex methods of analysis as the instantaneous reactive power method, which have not been usable for single-phase systems so far. Both, the active and reactive powers can be determined by this way. Practical application of the method is outlined for the case of reference current determination for single-phase power active filter. The paper shows some examples of the simulation verification results, which proved a high accuracy and extremely fast response of the single-phase active filter with control, based on the introduced method. The effectiveness of proposed control algorithm is also demonstrated by experimental results, which were carried out on the single - phase active parallel filter, power rate of 25 kVA and controlled by 32 - bit floating point digital signal processor TMS 320C31.

6

Single-phase power active filter using instantaneous reactive power theory : theoretical and practical approach

Altus J., Michalik J., Dobrucky B., Viet L. H.

Electrical Power Quality and Utilisation. Journal

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2005

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Vol. 11, nr 1

33-38

EN

The paper deals with the new method of analysis, synthesis and experimentation of single-phase power active filters. By using a new particular transformation theory, the ordinary single-phase system can be transformed into an equivalent two-axes orthogonal one. The new original thought is based on the idea that ordinary single-phase quantity can be complemented bv fictitious second phase so that both of them will create an orthogonal system, as is usual in three-phase systems, in spite of [1]. Application of the above theory makes it possible to use complex methods of analysis as the instantaneous reactive power method, which have not been usable for single-phase systems so far. Both, the active and reactive powers can be determined by this way. Practical application of the method is outlined for the case of reference current determination for single-phase power active filter. The paper shows some examples of the simu-lution verification results, which proved a high accuracy and extremely fast response of the single-phase active filter with control, based on the introduced method. The effectiveness of proposed control algorithm is also demonstrated by experimental results, which were carried out on the single - phase active parallel filter, power rate of 25 kVA and controlled by 32 - bit Heating point digital signal processor TMS 320C31.