Temat: correction factor - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Estimation of the inductive current transformer derating for operation with distorted currents
Autorzy:: Kaczmarek, M.
Powiązania:: https://bibliotekanauki.pl/articles/201060.pdf
Data publikacji:: 2014
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: current transformer
distorted current
derating conditions
composite errors
transformer correction factor
accuracy class
Opis:: The aim of the paper is to present a new method for estimation of the CT (Current Transformer) rated primary current and / or load of the secondary winding derating levels for transformation of distorted current in relation to the rated values fixed for transformation of sinusoidal current. This ensures the values of the CT composite errors/transformer correction factors as resulting from its IEC 60044-1/IEEE C57.13 accuracy class in condition of distorted currents transformation.
Źródło:: Bulletin of the Polish Academy of Sciences. Technical Sciences; 2014, 62, 2; 363-366
0239-7528
Pojawia się w:: Bulletin of the Polish Academy of Sciences. Technical Sciences
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Active power decoupling topology for AC-DC and DC-AC single-phase systems with decoupling capacitor minimization
Autorzy:: Stawiarski, Ł.
Piróg, S.
Powiązania:: https://bibliotekanauki.pl/articles/141750.pdf
Data publikacji:: 2018
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: active power decoupling
capacitance reduction
microgrid converter
double-line frequency ripple power
single-phase systems
power factor correction
Opis:: Passive power decoupling in single-phase DC-AC and AC-DC systems usually requires usage of electrolytic capacitors. To minimize converter volume, increase reliability, robustness and to eliminate ripple power effect on the DC side, new solutions for Active Power Decoupling are proposed. In this paper a novel Active Power Decoupling topology for low power single-phase AC-DC and DC-AC converters is presented. The proposed topology is based on well-known boost and buck-boost topologies but with a completely different control scheme. The topology description with a complete control algorithm is presented. The proposed APD solution is verified by experimental results of a 450 W converter in AC-DC mode and a 320 W converter in DC-AC mode.
Źródło:: Archives of Electrical Engineering; 2018, 67, 1; 193-205
1427-4221
2300-2506
Pojawia się w:: Archives of Electrical Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Modeling of the AC/HF/DC converter with power factor correction
Autorzy:: Bogdan, A.
Powiązania:: https://bibliotekanauki.pl/articles/141404.pdf
Data publikacji:: 2010
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: korekcja współczynnika mocy
obwód rezonansowy
transformator wysokiej częstotliwości
przekształtnik podwyższający napięcie
power factor correction
resonant circuit
high frequency transformer
boost converter
Opis:: In this paper, the power factor correction system consisted of: bridge converter, parallel resonant circuit, high frequency transformer, diode rectifier and LFCF filter is presented. This system is controlled by a pulse density modulation method and the principle of its operation is based on the boost technique. The modeling approach is illustrated by an example using AC/HF/DC converter. Verification of the derived model is provided, which demonstrated the validity of the proposed approach.
Źródło:: Archives of Electrical Engineering; 2010, 59, 3-4; 141-152
1427-4221
2300-2506
Pojawia się w:: Archives of Electrical Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: Investigation of a High-efficiency and High-frequency 10-kW/800-V Three-phase PWM Converter with Direct Power Factor Control
Autorzy:: Barlik, Roman
Grzejszczak, Piotr
Leszczyński, Bernard
Szymczak, Marek
Powiązania:: https://bibliotekanauki.pl/articles/226672.pdf
Data publikacji:: 2019
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: three-phase PWM rectifier
reactive power compensator
silicon carbide MOSFET
bidirectional power flow
direct power control (DPC)
DC voltage regulation
power factor correction (PFC)
LCL filter
Opis:: The paper presents a concept of a control system for a high-frequency three-phase PWM grid-tied converter (3x400 V / 50 Hz) that performs functions of a 10-kW DC power supply with voltage range of 600÷800 V and of a reactive power compensator. Simulation tests (in PLECS) allowed proper selection of semiconductor switches between fast IGBTs and silicon carbide MOSFETs. As the main criterion minimum amount of power losses in semiconductor devices was adopted. Switching frequency of at least 40 kHz was used with the aim of minimizing size of passive filters (chokes, capacitors) both on the AC side and on the DC side. Simulation results have been confirmed in experimental studies of the PWM converter, the power factor of which (inductive and capacitive) could be regulated in range from 0.7 to 1.0 with THDi of line currents below 5% and energy efficiency of approximately 98.5%. The control system was implemented in Texas Instruments TMS320F28377S microcontroller.
Źródło:: International Journal of Electronics and Telecommunications; 2019, 65, 4; 619-624
2300-1933
Pojawia się w:: International Journal of Electronics and Telecommunications
Dostawca treści:: Biblioteka Nauki

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