PL
 |
EN
Preferencje help
Polish version English version Język
Widoczny [Schowaj] Abstrakt
Liczba wyników

Znaleziono wyników: 6

Liczba wyników na stronie
first rewind previous Strona / 1 next fast forward last
Wyniki wyszukiwania
help Sortuj według:

help Ogranicz wyniki do:
first rewind previous Strona / 1 next fast forward last
1
Content available DC power supply with parallel active compensation function and tuneable inductive filter based on analogue control: Part 1
Gwóźdź Michał, Ciepliński Łukasz
Bulletin of the Polish Academy of Sciences. Technical Sciences
|
2024
|
Vol. 72, nr 1
art. no. e148839
EN
In this paper, a DC power supply is presented that, in addition to a power factor correction, is equipped with an active power filter function. This function enables compensation of both the reactive and the distortion power, generated by an external load, which is connected to the same power line node as the presented device. A tuneable inductive filter is added at the input of the power electronics controlled current source, which constitutes the main block of the power supply. This filter allows for a visible improvement in the quality of the current source control, compared to a similar device with a fixed inductive filter. This improvement depends on extending the “frequency response” of the current source, which facilitates an increase in the dynamics of changes in the input current of the power supply. The actual modification to the presented device is related to its control section, which is equipped with analogue regulators. The main purpose of this work is to present the results from a simulation model of an electrical system with a power supply, especially compared to those from a similar device but with a discrete control. The work represents a continuation of a research cycle on DC power supplies that are equipped with a power compensation function and are based on tuneable magnetic devices.
2
Content available Active parallel compensation using a power supply with a tunable inductive filter
Ciepliński Łukasz, Gulczyński Adam
Archives of Electrical Engineering
|
2024
|
Vol. 73, nr 2
337--353
EN
Increasing numbers of devices of various types are now connected to power lines. Their nonlinear nature harms the operation of the lines, as the line voltage is distorted from a sine wave, which causes disturbances in the operation of other loads. This study proposes a method of active parallel compensation that can be realised using a power supply. The proposed device is a dual-function system: it supplies the load connected to its DC link, and operates as a parallel active filter. This kind of device, with a relatively low value of the rated output power, could be implemented in electrical systems to provide distributed compensation. The second novel aspect of this work is the use of a tunable inductive filter, which is included at the input of the power electronics controlled current source and forms a main part of the power supply. The use of this tunable inductive filter increases the frequency response of the current source, while at the same time, in the quasi-steady state of power supply operation, the pulse modulation component of the input current source remains at a minimum level. This paper discusses the structure of an electrical system with the proposed power supply and the rules of operation for the system, and presents test results based on both a simulation and a laboratory model of the system.
3
Content available Power supply with parallel reactive and distortion power compensation and tunable inductive filter — Part 2
Gwóźdź Michał, Wojciechowski Rafał, Ciepliński Łukasz
Bulletin of the Polish Academy of Sciences. Technical Sciences
|
2021
|
Vol. 69, nr 4
art. no. e137938
EN
The paper is the second part of the work, devoted to a DC power supply with a power factor correction function. The power supply is equipped additionally with a shunt active power filter function, which enables the compensation of reactive and distortion power, generated by loads, connected to the same power grid node. A tunable inductive filter, included at the input of the power electronics current source – the main block of the power supply – allows for an improvement of the quality of the system control, compared to the device with a fixed inductive filter. This improvement was possible by extending the current source “frequency response”, which facilitated increasing the dynamics of current changes at the power supply input. The second part of the work briefly reminds the reader of the principle of operation and the structures of both the power supply control system and its power stage. The main purpose of this paper is to present the selected test results of the laboratory model of the electric system with the power supply.
4
Content available An active power filter based on a hybrid converter topology – Part 1
Gwóźdź Michał, Ciepliński Łukasz
Bulletin of the Polish Academy of Sciences. Technical Sciences
|
2021
|
Vol. 69, nr 1
art. no. e136218
EN
This paper presents a concept of a shunt active power filter, which is able to provide more precise mapping of its input current drawn from a power line in a reference signal, as compared to a typical filter solution. It can be achieved by means of an interconnection of two separate power electronics converters making, as a whole, a controlled current source, which mainly determines the quality of the shunt active filter operation. One of these power devices, the “auxiliary converter”, corrects the total output current, being a sum of output currents of both converters, toward the reference signal. The rated output power of the auxiliary converter is much lower than the output power of the main one, while its frequency response is extended. Thanks to both these properties and the operation of the auxiliary converter in a continuous mode, pulse modulation components in the filter input current are minimized. Benefits of the filter are paid for by a relatively small increase in the complexity and cost of the system. The proposed solution can be especially attractive for devices with higher output power, where, due to dynamic power loss in power switches, a pulse modulation carrier frequency must be lowered, leading to the limitation of the “frequency response” of the converter. The concept of such a system was called the “hybrid converter topology”. In the first part of the paper, the rules of operation of the active filter based on this topology are presented. Also, the results of comparative studies of filter simulation models based on both typical, i.e. single converter, and hybrid converter topologies, are discussed.
5
Content available remote Zasilacz sieciowy z przestrajalnym filtrem indukcyjnym
Ciepliński Łukasz, Gwóźdź Michał, Krystkowiak Michał
Przegląd Elektrotechniczny
|
2020
|
R. 96, nr 6
88--92
PL
W artykule zaprezentowano rozwiązanie zasilacza sieciowego z przestrajalnym filtrem indukcyjnym, który odznacza się dodatkowo możliwością aktywnej kompensacji mocy biernej i mocy odkształcenia, generowanej przez inne odbiorniki dołączone do tego samego węzła sieci elektroenergetycznej. Użyty w układzie pasywny filtr, w postaci cewki o zmiennej indukcyjności, pozwala na uzyskanie dużej dynamiki zmian prądu wejściowego zasilacza, co znacząco poprawia jakość procesu kompensacji. W artykule zaprezentowano zasadę działania zasilacza oraz struktury i modele jego układów sterowania i silnoprądowego. Przedstawiono również wybrane wyniki badań modelu symulacyjnego układu w różnych warunkach jego pracy.
EN
The article presents the solution of the power supply with a tunable inductive filter. The power supply is characterized additionally by the possibility of compensation of both reactive power and deformation power, generated by other loads connected to the same power grid node. The passive filter with tuned inductance is used in the system for obtaining a high dynamics of the input current of the power supply. This one significantly improves the quality of compensation process. The article presents the principles of the system operation as well as the structure of the control circuits and the power stage of the system. Selected results of the tests of the system simulation model, for various operating conditions, are presented too.
6
Content available Model symulacyjny jednofazowego prostownika diodowego z modulatorem prądu
Ciepliński Łukasz, Krystkowiak Michał, Gwóźdź Michał
Poznan University of Technology Academic Journals. Electrical Engineering
|
2019
|
No. 99
63--72
PL
W artykule zaprezentowano strukturę oraz zasadę działania jednofazowego prostownika diodowego z modulatorem prądu w obwodzie wejściowym. Rozwiązanie to charakteryzuje się poborem sinusoidalnego prądu z sieci elektroenergetycznej, zgodnego w fazie z podstawową harmoniczną napięcia. Opisano zarówno część silnoprądową, jak i sterującą zbudowanego modelu symulacyjnego. Zaprezentowano również wyniki badań modelu w wybranych warunkach pracy.
EN
In the article, the simulation model of a one-phase full bridge rectifier with a current modulator in a DC circuit is described. The proposed solution is characterized by consumption of a sinusoidal current from a power grid. The rule of operation, control algorithms, and the simulation model of the system are presented. Also, selected results of the simulation model investigation are shown.
first rewind previous Strona / 1 next fast forward last
JavaScript jest wyłączony w Twojej przeglądarce internetowej. Włącz go, a następnie odśwież stronę, aby móc w pełni z niej korzystać.