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Wyszukujesz frazę "energy storage devices" wg kryterium: Temat


Wyświetlanie 1-3 z 3
Tytuł:
Battery charging controllers in autonomous photovoltaic systems
Autorzy:
Głuchy, D.
Trzmiel, G.
Powiązania:
https://bibliotekanauki.pl/articles/97256.pdf
Data publikacji:
2012
Wydawca:
Politechnika Poznańska. Wydawnictwo Politechniki Poznańskiej
Tematy:
photovoltaic systems
solar power
charge controller
energy storage devices
Opis:
In the work, the authors explain the concept of operation of an autonomous photovoltaic system with particular focus on the role of battery charging controllers. Didactic experiments that complement the theoretical knowledge on the construction and the principles of operation of photovoltaic systems of the “off-grid” type were conducted. The laboratory set described provides the capabilities to analyze the operation of small autonomous photovoltaic systems which are analogous to complex systems that are used in real settings. The systems are especially popular in Poland and that is why it is important to deepen the knowledge on them. Particular attention is put in the article on the cooperation of photovoltaic elements with energy storage devices (condensers and batteries) and with the load points with the use of battery charging controllers (serial and shunt) and of a module protecting the energy storage devices against discharging. The review of different solutions is complemented with sample measurement tests and with the test results for the tested system of the “off-grid” type.
Źródło:
Computer Applications in Electrical Engineering; 2012, 10; 347-357
1508-4248
Pojawia się w:
Computer Applications in Electrical Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Challenges of ship propulsion systems during DP operations
Autorzy:
Herdzik, I.
Powiązania:
https://bibliotekanauki.pl/articles/247849.pdf
Data publikacji:
2012
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
propulsion system
challenge
dynamic positioning operation
safety of propulsion system
energy storage devices
Opis:
Ship propulsion configurations with dynamic positioning systems are commonly used as diesel-electric. In particular, situations for ship transfer on longer distances may be used conventional mechanical propulsion system with controllable pitch propeller. Combination of mechanical and electric propulsion system called hybrid propulsion is met as well, where the thrusters of DP systems are driven through the gear by mechanical engine or electric motor independent or both. For the sake of the necessity of limitation of total installed power on the ship may occurred problems with power distribution between the ship propulsion and industry part. It will especially concern those situations when we need to keep power supply to the industry part and there is a necessity to increase the power delivered to ship propulsion part for the purpose of keeping the ship position or heading. The primary task of power management system (PMS) is blackout prevention in ship energetic network and so power distribution to overcome critical conditions of it. Temporarily it may occur the worsening of positioning operation accuracy without any critical situations of industry part. The possibility of momentary overloading of energetic network is primary condition of safety. The critical duration of overloading is one minute. This is indispensable time for increasing the accessible power in the energetic system through switching on the next genset to work. It is a necessity of quick analysis in critical conditions to value what key-actions ought to do in the aim of overcoming emergency situations. The next one is a usage of energy storage devices. It is possible through AC/DC conversion. It was tried to find solutions of equalization the load of gensets to the ship electric energy demand.
Źródło:
Journal of KONES; 2012, 19, 2; 211-217
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Intermittent power smoothing control for grid connected hybrid wind/PV system using battery-EDLC storage devices
Autorzy:
Jayalakshmi, N.S.
Gaonkar, D.N.
Karthik, R.P.
Prasanna, P.
Powiązania:
https://bibliotekanauki.pl/articles/141664.pdf
Data publikacji:
2020
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
energy storage devices
inverter controller
MPPT controller
power smoothing
PV system
wind power
Opis:
Wind and solar radiation are intermittent with stochastic fluctuations, which can influence the stability of operation of the hybrid system in the grid integrated mode of operation. In this research work, a smoothing control method for mitigating output power variations for a grid integrated wind/PV hybrid system using a battery and electric double layer capacitor (EDLC) is investigated. The power fluctuations of the hybrid system are absorbed by a battery and EDLC during wide variations in power generated from the solar and wind system, subsequently, the power supplied to the grid is smoothened. This makes higher penetration and incorporation of renewable energy resources to the utility system possible. The control strategy of the inverter is realized to inject the power to the utility system with the unity power factor and a constant DC bus voltage. Both photovoltaic (PV) and wind systems are controlled for extracting maximum output power. In order to observe the performance of the hybrid system under practical situations in smoothing the output power fluctuations, one-day practical site wind velocity and irradiation data are considered. The dynamic modeling and effectiveness of this control method are verified in the MATLAB/Simulink environment. The simulation results show that the output power variations of the hybrid wind/PV system can be significantly mitigated using the combination of battery and EDLC based storage systems. The power smoothing controller proposed for the hybrid storage devices is advantageous as compared to the control technique which uses either battery or ultracapacitor used for smoothing the fluctuating power.
Źródło:
Archives of Electrical Engineering; 2020, 69, 2; 433-453
1427-4221
2300-2506
Pojawia się w:
Archives of Electrical Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-3 z 3

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