Wyniki wyszukiwania - Biblioteka Nauki

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Zastosowanie odnawialnych źródeł energii w transporcie

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Moćko W. , Wojciechowski A. , Staniak P.

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tom Nr 2(95)

99-104

EN

Aim of the study was to analyze the influence of renewable energy sources on the well-to-wheel CO2 emission of the electric driven vehicle, especially with respect to the Polish electric energy supply structure. The main reasons of growing hybrid and electric powered vehicles share in the market are: limited fos sil fuels sources, narrow emission standards, global warming effect. Well-to-wheel analysis of CO2 emission is a very reliable methodology which enables to compare various types of vehicle powertrain and fuels. Overall CO2 emission of the electric vehicle depends mainly on share of the renewable energy sources (RES) in the market. Authors conclude that in Polish conditions, where RES share is negligible, overall CO2 emission of electric vehicle is comparable with combustion engine powered one.

2

Well-to-wheel CO2 emission of electric vehicle in Polandlectric vehicle in Poland

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Staniak P. , Moćko W. , Wojciechowski A.

Journal of KONES

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2012

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tom Vol. 19, No. 4

139-148

EN

The total CO2 emission of electric vehicle depends on a renewable energy share in an energy market of given country. At the moment, this share is significant only in a few European countries (Denmark, Germany, Scandinavian countries) having large number of water, solar and wind power plants. Additionally, France may be considered as a country possessing low-emission electric energy, because around 90% of this energy is generated by a nuclear power plants. In order to compare the greenhouse gas emission from an electric vehicle with combustion powered cars well-to-wheel (WtW) methodology may be applied. The well-to-wheel emission estimates the total CO2 which is required to generate a given power measured on vehicle wheels including generating, transferring and processing losses. The magnitude of WtW varies from 0g/km in the case of a vehicle charged directly by a solar or wind powered charging point to 200 g/km in the case of charging form public grid powered by old coal power plants. For the Polish energy market the share of renewable energy sources is negligible (below 10%), moreover majority of a power plants uses coal to generate electricity. However, according to the EU strategy this share should be doubled until 2020. Additionally, it is considered building of a nuclear power plant, which results in further reduction of CO2 from energetic industry. In this article WtW CO2 emission of electric driven vehicle charged from the public grid was analyzed for Polish conditions at present and various growth scenario as well. Moreover, an actual energy market structure as well as growth perspectives were reviewed.

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Koncepcja modułowego elektronicznego systemu przekształcania energii paneli fotowoltaicznych dla stacji wymiany akumulatorów trakcyjnych

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Staniak P. , Iwański G. , Moćko W.

Elektronika : konstrukcje, technologie, zastosowania

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2012

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tom Vol. 53, nr 7

99-101

PL

Artykuł przedstawia koncepcję systemu przekształcania energii w układzie ze źródłami fotowoltaicznymi oraz odbiornikami w postaci baterii elektrochemicznych. Opisano założenia działania poszczególnych części systemu przekształtnikowego. Następnie skoncentrowano się na przekształtniku dołączonym do źródła fotowoltaicznego. Podano jego strukturę, układ sterowania oraz wyniki pracy symulacyjnej.

EN

This paper presents a conception of a power electronics system supplied by PV panels for battery charging plant. The power electronics system includes DC/DC and DC/AC converters. The topology of converters depends on functions which are currently required by the system. Ali those functions are present in the paper. Subsequently the structure of the multi-input DC/ DC converter dedicated for photovoltaic panels is shown and a diagram of the control method for individual DC/DC converter connected to PV modules is presented. The last part of the paper contains simulation results.

4

Porównanie i analiza możliwości wykorzystania algorytmów MPPT dla paneli fotowoltaicznych z wykorzystaniem różnych profili nasłonecznienia

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Staniak P. , Iwański G. , Moćko W. , Ornowski M.

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2014

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tom Vol. 55, nr 9

142-146

PL

Artykuł przedstawia porównanie algorytmów MPPT dla źródeł fotowoltaicznych. Do badań wybrano trzy najczęściej wykorzystywane algorytmy. Przedstawiono ich krótką charakterystykę wraz ze strukturą graficzną. Następnie pokazano wyniki badań komputerowych oraz na stanowisku laboratoryjnym. W ostatniej części pracy przedstawiono wnioski oraz określono kierunek kontynuacji badań.

EN

The article presents comparison and the study of the maximum power point tracking (MPPT) methods in the different sunshine conditions. The paper shows the simulation studies and the laboratory tests of three MPPT techniques from the literature, which has been chosen for analysis at the angle of a few aspects e.g. the implementation in the microcontrollers system. The short description of the MPPT techniques is included and the authors present all algorithms, which have been implemented in the microcontroller. In the last part of the article the summary is presented.

5

Application of green energy for EV battery charging station

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Staniak P. , Moćko W. , Wojciechowski A.

Journal of KONES

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2012

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tom Vol. 19, No. 1

371-376

EN

The Well-to-Wheel (WtW) CO2 emission of the electric vehicle (EV) strictly depends on amount of a carbon dioxide (including transmission and conversion losses) required to produce an electric energy used to charge EV batteries. Value of the WtW emission may be lowered by increasing a share of low-pollutant power plants i.e. using renewable energy or nuclear power, however it needs a large financial investments and it is very long process, taking over a dozen years. Even in the case of countries having a large share of low-emission power plants (Germany), a smart grids must be applied in order to optimize a value of WtW CO2 emission. Usually batteries are charged during night, where energy demands are relatively low and at the same time wind turbines supplies majority of electric energy to the grid. Presented idea of the battery charging station described in this article has a local character. It uses photovoltaic panels as a source of "green" electric energy. As a consequence the value of WtW emission for an EV batteries charged in this station equals to 0 g/km. The charging station uses EV battery swap thus the time of staying in the station is shorter in comparison with normal or even fast charging. The battery swapping technology uses replacing of the discharged units mounted in EV by fully charged ones. The batteries are placed in special try, which enables a quick mechanical and electrical connecting and disconnecting. Moreover, batteries stored in the station may be used as an energy storage devices and makes charging process optimization easier; moreover, they can be used as an element of a smart grid system. The article describes model of charging station using both photovoltaic and quick EV battery swap.

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Zarządzanie rozpływem energii w systemie przekształtnikowym stacji ładowania baterii elektrochemicznych współpracującej ze źródłami fotowoltaicznymi

88%

Staniak P. , Iwański G. , Wiśniewski J. , Moćko W. , Ornowski M.

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2014

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tom Vol. 55, nr 8

47-49

PL

W artykule przedstawiono wyniki badań systemu przekształtnikowego wraz z układami sterowania, zbudowanego dla demonstratora stacji ładowania baterii elektrochemicznych. W pierwszej części pracy przywołano najważniejsze założenia projektu. W kolejnych częściach zaprezentowano wyniki zarejestrowane podczas pracy układu w warunkach laboratoryjnych oraz w warunkach rzeczywistych.

EN

The paper presents the results of research of the power electronics conversion system proposed for electrochemical batteries charging station supported by photovoltaic sources. The research results were obtained in laboratory set-up with PV emulator, as well as in setup with real PV sources. The main assumptions of project are described in the first part of the paper. The second part describes results of operation of demonstration unit.