Дисертації з теми "CHARGING AND DISCHARGING TIME"
Оформте джерело за APA, MLA, Chicago, Harvard та іншими стилями
Ознайомтеся з топ-50 дисертацій для дослідження на тему "CHARGING AND DISCHARGING TIME".
Біля кожної праці в переліку літератури доступна кнопка «Додати до бібліографії». Скористайтеся нею – і ми автоматично оформимо бібліографічне посилання на обрану працю в потрібному вам стилі цитування: APA, MLA, «Гарвард», «Чикаго», «Ванкувер» тощо.
Також ви можете завантажити повний текст наукової публікації у форматі «.pdf» та прочитати онлайн анотацію до роботи, якщо відповідні параметри наявні в метаданих.
Переглядайте дисертації для різних дисциплін та оформлюйте правильно вашу бібліографію.
Saas, Christoph [Verfasser]. "Energy Efficient Charging and Discharging of Dominant Capacitances / Christoph Saas." Aachen : Shaker, 2007. http://d-nb.info/1170528066/34.
Повний текст джерелаAloqaily, Osama. "Charging and Discharging Algorithms for Electric Vehicles in Smart Grid Environment." Thesis, Université d'Ottawa / University of Ottawa, 2016. http://hdl.handle.net/10393/34562.
Повний текст джерелаFain, Daniel Ian. "A dual input bidirectional power converter for charging and discharging a PHEV battery." Connect to this title online, 2009. http://etd.lib.clemson.edu/documents/1252424759/.
Повний текст джерелаWang, Dian. "Microgrid based on photovoltaic energy for charging electric vehicle stations : charging and discharging management strategies in communication with the smart grid." Thesis, Compiègne, 2021. http://www.theses.fr/2021COMP2584.
Повний текст джерелаThe rapid development of electric vehicles (EVs) increases the power demand, which causes an extra burden on the public grid increasing the load fluctuations, therefore, hindering the high penetration of EVs. A real-time rule-based algorithm for electric vehicle (EV) charging stations empowered by a DC microgrid is proposed to deal with the uncertainties of EV users’ behaviour considering its arbitrary and random choices through the human-machine interface, meanwhile considering most of the users’ choices. The simulation results obtained under MATLAB/Simulink verify the feasibility of the proposed management strategy that presents a good performance in terms of precise control. In addition, EV shedding and restoration optimization algorithms (SROA) for battery charging power can be used to meet user needs while maintaining EV charging station power balance, taking into consideration the intermittency of the photovoltaic (PV) source, the capacity limitation of the storage, and the power limitation of the public grid. The simulation results show that compared with rule-based algorithm, the proposed SROA respect the user's choice while reducing total charging time, increasing the full rate, and maximizing the available power utilization, which shows the feasibility and effectiveness of SROA. Furthermore, a PV based charging station for EVs can participate to solve some peak power problems. On the other hand, vehicle to grid (V2G) technology is designed and applied to provide ancillary services grid during the peak periods, considering the duality of EV battery “load-source”. So, a dynamic searching peak and valley algorithm, based on energy management, is proposed for an EV charging station to mitigate the impact on the public grid, while reducing the energy cost of the public grid. Simulation results demonstrate the proposed searching peak and valley algorithm effectiveness, which can guarantee the balance of the public grid, meanwhile satisfy the charging demand of EV users, and most importantly, reduce the public grid energy cost
Nishikawa, Kei. "Mass transfer of Li[+] ion accompanied by charging and discharging reaction of Li battery electrode." Kyoto University, 2006. http://hdl.handle.net/2433/135558.
Повний текст джерела0048
新制・課程博士
博士(エネルギー科学)
甲第12623号
エネ博第141号
新制||エネ||34(附属図書館)
UT51-2006-S631
京都大学大学院エネルギー科学研究科エネルギー基礎科学専攻
(主査)教授 尾形 幸生, 教授 八尾 健, 教授 福中 康博
学位規則第4条第1項該当
Mansour, Samah. "Performance optimization of hybrid, centralized, and decentralized adaptive charging/discharging schemes for plug-in electric vehicles." Thesis, McGill University, 2014. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=121588.
Повний текст джерелаCette thèse propose une méthodologie décentralisée pour la planification et la coordination des activités de charge et décharge des véhicules électriques (VEs) au sein des réseaux intelligents. La formulation d'optimisation est ensuite étendue vers une approche hybride qui peut être considérée comme un compromis entre l'approche centralisée et l'approche décentralisée. La fonction objectif des différents mécanismes de coordination proposés maximise l'écrê tage de pointe du point de vue de l'opérateur du système électrique. Les algorithmes proposés sont examinés de façon multidisciplinaire par moyen d'analyse et de co-simulation de la puissance électrique et de communication intelligente, sur une infrastructure de communications basées sur des technologies convergentes haut-débit optique et sans-fil. L'objectif principal de cette thèse est de réaliser une étude comparative entre les méthodes centralisée, décentralisée et hybride. La comparaison des méthodes proposées avec un algorithme de référence centralisé révèle le compromis de performances entre les trois approches. La comparaison tient compte de plusieurs métriques du réseau, telles que la demande de puissance, les pertes, les amplitudes de tension nodale, et, du point de vue des communications, la largeur de bande requise et le délai. L'adoption d'un algorithme parmi les trois proposés dépend de plusieurs facteurs, cependant le nombre de VEs semble être le facteur principal. Les algorithmes centralisés démontrent des performances optimales pour des taux relativement faibles de pénétration des VEs, alors que les systèmes décentralisés sont nécessaires lorsqu'il y a un nombre croissant de VEs. D'autre part, les systèmes hybrides sont capables de répondre aux pics de demandes successives résultant de systèmes décentralisés avec des taux de pénétration très élevés.
Wu, Wenzhuo. "Charging time estimation and study of charging behavior for automotive Li-ion battery cells using a Matlab/Simulink model." Thesis, KTH, Skolan för elektro- och systemteknik (EES), 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-194490.
Повний текст джерелаEn noggrann estimering av laddtiden hos batterier avsedda för traktionsapplikationer kräver kunskap kring batteriets och dess tillhörande laddsystems parametervärden. Utan tillgång till denna information kan laddtiden endast uppskattas från fordonsägarens tidigare erfarenheter vilket försvårar t.ex. ruttplanering. En estimering av laddtiden med tillräcklig noggrannhet kan även möjliggöra bättre utnyttjade av laddutrusting inklusive nyttjandet av publika laddstationer. I detta examensarbete har en algoritm, implementerad i Matlab/Simulink, för att estimera laddtiden hos ett litiumjonbatteripack bestående av 32 celler på vardera 40 Ah tagits fram. Med hjälp av modellen har olika laddstrategier och metoder för att balansera cellerna studerats. Ett antal olika batterimodeller har jämförts i termer av noggrannhet och krav på beräkningsprestanda. En elektriskt ekvivalent krets från referens [1], bestående av en serieresistans samt två ZARC-element, valdes slutligen för att representera battericellen. Den ekvivalenta kretsens parametrar uppdateras vid förändringar i SOC, ström och temperatur. Hela simuleringsmodellen består av en laddregulator (i vilken laddstrategin är implementerad), cellbalanseringregulator och modeller för cell och cellbalanseringens hårdvara. Ett antal metoder för att balanser cellerna har jämförts med hänsyn till påverkan på den resulterande laddtiden. En traditionell samt modifierad CCCV laddstrategi har implementerats och jämförts med avseende på variationer i inledande SOC, total laddtid samt åldring. Experimentella resultat från en hardware-in-the-loop simulering har använts för att delvis kunna verifiera de framtagna resultaten.
Huttin, Magalie [Verfasser], and M. [Akademischer Betreuer] Kamlah. "Phase-field modeling of the influence of mechanical stresses on charging and discharging processes in lithium ion batteries / Magalie Huttin. Betreuer: M. Kamlah." Karlsruhe : KIT-Bibliothek, 2014. http://d-nb.info/1049730585/34.
Повний текст джерелаDudley, Paul. "Optimal time-related charging in competitive markets with particular reference to electricity." Thesis, Loughborough University, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.297117.
Повний текст джерелаDresler, Jan. "Tester akumulátorů s modulem ESP32." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2019. http://www.nusl.cz/ntk/nusl-400923.
Повний текст джерелаJhala, Kumarsinh. "Coordinated electric vehicle charging with renewable energy sources." Thesis, Kansas State University, 2015. http://hdl.handle.net/2097/19767.
Повний текст джерелаDepartment of Electrical and Computer Engineering
Balasubramaniam Natarajan
Anil Pahwa
Electric vehicles (EVs) are becoming increasingly popular because of their low operating costs and environmentally friendly operation. However, the anticipated increase of EV usage and increased use of renewable energy sources and smart storage devices for EV charging presents opportunities as well as challenges. Time-varying electricity pricing and day-ahead power commitment adds another dimension to this problem. This thesis, describes development of coordinated EV charging strategies for renewable energy-powered charging stations at homes and parking lots. We develop an optimal control theory-based charging strategy that minimizes power drawn from the electricity grid while utilizing maximum energy from renewable energy sources. Specifically, we derive a centralized iterative control approach in which charging rates of EVs are optimized one at a time. We also propose an algorithm that maximizes profits for parking lot operators by advantageously utilizing time-varying electricity pricing while satisfying system constraints. We propose a linear programming-based strategy for EV charging, and we specifically derive a centralized linear program that minimizes charging costs for parking lot operators while satisfying customer demand in available time. Then we model EV charging behavior of Active Consumers. We develop a real-time pricing scheme that results in favorable load profile for electric utility by influencing EV charging behavior of Active Consumers. We develop this pricing scheme as a game between electric utility and Active Consumers, in which the electric utilities decide optimal electricity prices that minimize peak-to-average load ratio and Active Consumers decide optimal charging strategy that minimizes EV charging costs for Active Consumers.
Sadeghi, Meykola Seyedhafez. "Decreasing charging time of Lithium-Ion Battery by controlling temperature during the process." Thesis, Högskolan i Halmstad, Akademin för ekonomi, teknik och naturvetenskap, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:hh:diva-42265.
Повний текст джерелаSilva, F?bio Oliveira. "Sistema para controle de carga e descarga com balanceamento de carga para bateria de chumbo ?cido com c?lulas ligadas em s?rie." Universidade Estadual de Feira de Santana, 2016. http://localhost:8080/tede/handle/tede/474.
Повний текст джерелаMade available in DSpace on 2017-07-12T21:44:11Z (GMT). No. of bitstreams: 1 PGCA_Dissertacao_Fabio.pdf: 17456050 bytes, checksum: 0e14f30b37a0f91b865c29f80d2ff377 (MD5) Previous issue date: 2016-08-18
Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior - CAPES
There are presently market a wide range of batteries. These batteries come to meet the need of electric power supply for electronic devices unable to be connected to a source of electricity for a certain period of time. For this to happen, a battery goes through a cycle involving a charge period and a discharge period. Another point to be noted is that the vast majority of applications that utilize lead acid batteries have a supply voltage above 2 volts, the voltage which is provided by a single cell. For higher voltages, it is necessary to link various cells in series. According to manufacturers of lead acid batteries, if loading and unloading are carried out in accordance with the specifications provided for the product, ensures the maximum utilization of battery life, but failure to comply with these specifications can shorten the life of a battery lead acid in more than 50%. Given the above, this paper describes the design of a system to charge control, discharge control and load balancing for lead acid batteries for better efficiency and maximum utilization of the useful life of the batteries.
Atualmente, existe no mercado uma grande gama de baterias. Estes acumuladores v?m para suprir a necessidade de fornecimento de energia el?trica para dispositivos eletroeletr?nicos impossibilitados de serem conectados a uma fonte geradora de energia el?trica por um determinado per?odo de tempo. Para que isso aconte?a, uma bateria passa por um ciclo que envolve um per?odo de carga e um per?odo de descarga. Outro ponto a ser observado ? que a grande maioria das aplica??es que utilizam baterias de chumbo ?cido possuem tens?o de alimenta??o superiores a 2 volts, que ? a tens?o fornecida por uma ?nica c?lula. Para obter tens?es maiores, faz-se necess?ria a liga??o de v?rias c?lulas em s?rie. Segundo os fabricantes das baterias de chumbo ?cido, se forem realizadas cargas e descargas em conformidade com as especifica??es fornecidas para o produto, garante-se o aproveitamento m?ximo da vida ?til da bateria, mas a inobserv?ncia destas especifica??es pode diminuir a vida ?til de uma bateria de chumbo ?cido em mais de 50%. Diante do exposto, este trabalho descreve o projeto de um sistema para controle de carga, controle de descarga e balanceamento de carga para baterias de chumbo ?cido que garanta uma melhor efici?ncia e o m?ximo aproveitamento da vida ?til destas baterias.
Janíček, Zdeněk. "Stabilita katodového materiálu pro LI-ion akumulátory." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2014. http://www.nusl.cz/ntk/nusl-220974.
Повний текст джерелаKulíková, Barbora. "Sledování vlivu teploty na vlastnosti lithium-iontové baterie." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2019. http://www.nusl.cz/ntk/nusl-399541.
Повний текст джерелаPisca, Marek. "Tester akumulátorů." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2014. http://www.nusl.cz/ntk/nusl-220712.
Повний текст джерелаSahani, Nitasha. "Optimal Charging Scheduling for Electric Vehicles Based on a Moving Horizon Approach." Thesis, Virginia Tech, 2019. http://hdl.handle.net/10919/96544.
Повний текст джерелаM.S.
There is an enhanced rate of global warming due to emissions and increased usage of fossil fuels in the transportation sector. As a feasible solution, electrification of transportation has become a necessary step towards an environment-friendly future. The escalation in plug-in electric vehicles (PEVs) has increased the impact on loading and voltage fluctuations in the distribution grid due to uncoordinated charging. This puts on extra stress on the grid system and compromises the system performance. As a measure to control the vehicle charging in a residential setup, a real-time optimal charging scheduling algorithm is developed which is implemented at the neighborhood level. To increase the charging performance with the limited available resources, an aggregator is introduced. The charging profit is maximized as the PEV charging problem is solved optimally by the aggregator. This facilitates the reduction in night-time grid congestion and maximization of number of PEVs getting charged with limited dependency on communication to avoid long delays in charging control. The proposed technique guarantees the complete charging of the selected PEVs in the stipulated time while considering the power grid operational constraints. It also reduces the impact of peak load demand by flattening the base load demand curve. To demonstrate the efficiency of the proposed mixed integer linear programming optimization algorithm, numerical tests for an IEEE 13 node feeder are performed. The results are discussed to give an outlook on the balance between system and user requirements by meeting the demand of the PEV users.
Prachař, Vojtěch. "Inteligentní Li-ion akumulátor." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2018. http://www.nusl.cz/ntk/nusl-377066.
Повний текст джерелаTonar, Karel. "Zkoumání uhlíku jako aditiva záporné aktivní hmoty olověného akumulátoru pro hybridní elektrická vozidla." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2010. http://www.nusl.cz/ntk/nusl-218568.
Повний текст джерелаLei, Guo. "Value of time and marginal driving costs for private car drivers with data from Stockholm congestion charging trial." Thesis, KTH, Transportvetenskap, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-41550.
Повний текст джерелаPřívozník, Tomáš. "Vliv přítlaku a aditiv na životnost olověného akumulátoru pro hybridní elektrická vozidla." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2012. http://www.nusl.cz/ntk/nusl-219748.
Повний текст джерелаVojtíšek, Miloš. "Studium vnitřního odporu článku olověného akumulátoru pro hybridní elektrická vozidla." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2013. http://www.nusl.cz/ntk/nusl-220111.
Повний текст джерелаČada, Miroslav. "Vliv různých typů AGM separátorů na parametry olověných akumulátorů pro hybridní elektrická vozidla." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2013. http://www.nusl.cz/ntk/nusl-220075.
Повний текст джерелаZimmerman, Nicole P. "Time-Variant Load Models of Electric Vehicle Chargers." PDXScholar, 2015. https://pdxscholar.library.pdx.edu/open_access_etds/2297.
Повний текст джерелаSaifuzzaman, Mohammad. "Modelling the effects of Stockholm Congestion Charges – A comparison of the two dynamic models: Metropolis and Silvester." Thesis, KTH, Transportvetenskap, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-42355.
Повний текст джерелаŘihák, Pavel. "Zkoumání vlivu oxidu titaničitého na životnost olověných akumulátorů s aplikovaným přítlakem." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2013. http://www.nusl.cz/ntk/nusl-220183.
Повний текст джерелаAli, Haider Adel Ali, and Ziad Namir Abdeljawad. "THERMAL MANAGEMENT TECHNOLOGIES OF LITHIUM-ION BATTERIES APPLIED FOR STATIONARY ENERGY STORAGE SYSTEMS : Investigation on the thermal behavior of Lithium-ion batteries." Thesis, Mälardalens högskola, Akademin för ekonomi, samhälle och teknik, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:mdh:diva-48904.
Повний текст джерелаKubizňák, Jan. "Bezobslužná nabíjecí stanice pro elektromobily." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2010. http://www.nusl.cz/ntk/nusl-218357.
Повний текст джерелаKarlén, Albin, and Sebastian Genas. "Marginaler för morgondagen : En kvantitativ analys av flexibiliteten hos aggregerade laddande elbilar." Thesis, Linköpings universitet, Energisystem, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-177967.
Повний текст джерелаThe electrification of the car fleet is taking place at a frenetic pace. Additionally, demand for electricity from other sectors of the Swedish society is expected to grow considerably in the coming decades, which in combination with an increasing proportion of intermittent energy sources puts increasing pressure on the electrical grid and prompts a need to adapt to these changes. A proposed solution to part of the power system's upcoming challenges is to utilize the flexibility available from charging electric vehicles (EVs) by letting an aggregator control a large number of EV chargers and sell the extra capacity to, for example, Svenska kraftnät's balancing markets. To quantify how much flexibility charging EVs can contribute with, the aggregator needs to make forecasts of how much power that is most likely available at a given time – a point forecast – but also an estimate of what power level the aggregator almost certainly will exceed – a quantile forecast. In this study, an investigation has been made of how the forecast error changes if the amount of aggregated EV chargers is increased, and how much an aggregator can lower their margins when selling the flexibility to be able to deliver according to the bid with certainty. This was done by quantifying the flexibility of 1000 EV chargers located at mainly workplaces, and by scaling up and down the data through random sampling. For these groups, probabilistic forecasts of the flexibility were then made with a moving average forecast as well as an ARIMA model. Based on the forecasts, potential revenues were finally simulated for the case where the aggregator uses the available flexibility for up-regulation to the balancing market FCR-D up, which is a frequency containment reserve that is activated in the event of disturbances. The results show that a tenfold increase in the number of aggregated EV chargers more than halves the forecast error. The two forecast models proved to have comparable precision, which suggests that the moving average forecast is recommended due to its lower complexity compared to the ARIMA model. The increased precision in the forecasts also resulted in higher revenues per charger. The average income from delivering flexibility from 1000 aggregated electric car chargers to FCR-D amounted to SEK 6900 per month, or SEK 0.8 per session – figures that would probably have been higher without the corona pandemic's increased share of work done from home. A 99 percent confidence level for the quantile forecast resulted in a safety margin of varying size, which on average was around 90 percent for 100 chargers, 60 percent for 1000 chargers and 30 percent for 10,000 chargers. Most flexibility was shown to be available on weekday mornings when approximately 600 kW was available at most for 1000 chargers. By examining frequency data for the Nordic power grid from the past ten years, the joint probability that a more than 50 percent activation of the FCR-D bid would coincide with the outcome for the available capacity being one-in-a-hundred-low, was concluded to be nearly non-existent – likely only once in about 511 years. For the aggregator to place bids based on a 99 percent confidence level can thus be considered safe.
Pospíchal, Martin. "Vliv přítlaku na životnost olověných akumulátorů u hybridních elektrických vozidel." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2012. http://www.nusl.cz/ntk/nusl-219878.
Повний текст джерелаAlghamdi, Turki. "Interactions of Connected Electric Vehicles with Modern Power Grids in Smart Cities." Thesis, Université d'Ottawa / University of Ottawa, 2021. http://hdl.handle.net/10393/42513.
Повний текст джерелаKonečný, Zdeněk. "Vliv oxidu titaničitého na vlastnosti olověných akumulátorů pracujících v režimu hybridních vozidel." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2012. http://www.nusl.cz/ntk/nusl-219871.
Повний текст джерелаCirkovský, Jaroslav. "Vliv iontů manganu ve struktuře hydroxidu nikelnatého na vlastnosti elektrod." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2010. http://www.nusl.cz/ntk/nusl-218706.
Повний текст джерелаGeorgescu, Ionut. "Rare-gas clusters in intense VUV laser fields." Doctoral thesis, Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2009. http://nbn-resolving.de/urn:nbn:de:bsz:14-ds-1226316004337-66645.
Повний текст джерелаGeorgescu, Ionut. "Rare-gas clusters in intense VUV laser fields." Doctoral thesis, Technische Universität Dresden, 2008. https://tud.qucosa.de/id/qucosa%3A24072.
Повний текст джерелаPapaix, Claire. "Mise en œuvre des instruments de politique publique allant dans le sens d’une mobilité bas carbone des personnes en milieu urbain." Thesis, Paris Est, 2015. http://www.theses.fr/2015PEST0059.
Повний текст джерелаThis PhD thesis deals with the reconciliation of the global challenge that is climate change and the local and sectoral solutions that need to be accurately designed to remedy to it the most efficiently, equitably and acceptably possible. More specifically, we investigate the conditions for a successful implementation of climate policy at the scale of the urban mobility of passengers
Leitman, Valentín. "Koncept nabíjecí stanice s možností off-grid provozu pro elektrokola." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2017. http://www.nusl.cz/ntk/nusl-319544.
Повний текст джерелаKUMAR, NITIN. "PERFORMANCE ANALYSIS OF LATENT HEAT THERMAL ENERGY STORAGE SYSTEM USING FINS." Thesis, 2023. http://dspace.dtu.ac.in:8080/jspui/handle/repository/19964.
Повний текст джерелаHuang, You-chun, and 黃宥鈞. "Charging/discharging circuit for battery test system." Thesis, 2018. http://ndltd.ncl.edu.tw/handle/66d77h.
Повний текст джерела國立中山大學
電機工程學系研究所
106
In the conventional battery test system, charging and discharging currents go through several stages of AC-to-DC and DC-to-DC power converters causing power conversion losses during formatting and grading processes. An H-bridge converter is interleaved between two tested batteries, which are paired up to counterbalance the charging and discharging powers by properly arranging the manufacturing schedule. To cope with the designated formatting and grading profiles, each battery is attached by a bidirectional flyback converter to complement the insufficient current into or remove the excessive current from the tested battery. A great amount of energy can be saved in battery production for a battery test system with fewer power conversion stages and less power transfer between the tested batteries and the DC-bus. Experiments on two pair-up batteries with the proposed charging/discharging circuit are conducted to accomplish the profiles of constant-current discharging and constant-current constant-voltage charging. Experimental results demonstrate that the power losses can be effectively reduced by 50 % during the grading process as compared with that of the conventional battery test system.
Syu, Kai-Chen, and 徐愷辰. "SPICE Model of Battery Charging and Discharging." Thesis, 2019. http://ndltd.ncl.edu.tw/handle/fyk7f9.
Повний текст джерела國立交通大學
機械工程系所
107
Battery is the most widely used electrical energy storage device nowadays. From electronics such as notebook computers, mobile phones and remote controls to high-power devices such as uninterruptible power systems, airplanes and electric vehicles, battery applications can be seen. The capacitor of a battery is the most concerned information about the use of batteries. In the past, battery models often obtained the relationship between the capacity and the battery terminal voltage through experimental measurements and used polynomial or table lookup. The disadvantage is that the correlation between the battery model and the physical world is lacking. In this study a new battery model base on different combination structure of capacitors is used to analogous to the relationship between battery voltage and the capacity. Batteries are charged/discharge by the electronically load. Record the terminal voltage and current to obtain the charging/discharging curve of the battery. Analysis the relationship between the voltage and experimental result and finds the of the battery variable capacitance equivalent circuit model of the battery under test.
Liu, Feng-Chi, and 劉峰其. "Nonlinear Lithium Battery Modelsfor Battery Charging and Discharging." Thesis, 2010. http://ndltd.ncl.edu.tw/handle/89841116009443647499.
Повний текст джерела國立中央大學
電機工程研究所
98
Nowadays, lithium battery circuit models, some are too simple, can not simulate the cycle time and temperature effects. One with fully functioning model can only simulate discharging behavior, not charging. In addition, at this stage, circuit models are only for specific manufacturer, not an universal solution. This paper presents the circuit model for both battery charging and discharging. Based on the manufacturer’s data sheet, the model parameters are extracted to derive the coefficients of the expressions of the major components in the circuit model. This experiment used Lithium iron phosphate ion battery for a comparison. Results show that, at the battery discharging and charging conditions, the errors between the measurement results and the simulated results. In discharging condition, when the battery voltage reaches cut-off voltage 2.5V, the time is 6480 seconds, the error is 3.12%. And the maximum error voltage is 16mV, in 0.501%. In charging condition, when the battery voltage reaches a predetermined nomial voltage 3.65V, the time is 2880 seconds, the error is 0.712%. And the maximum error voltage is 37mV, in 1.072%. Thus, the proposed circuit model can be used for battery simulation. It not only diminishes the risk of experimental safety but also decreases the cost from battery manufacturer.
Wan-YiHorng and 洪琬宜. "Balance Charging/Discharging Method for Series-Connected Batteries." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/29600486172482592417.
Повний текст джерела國立成功大學
電機工程學系碩博士班
101
A novel balancing method for series connected batteries is proposed in this thesis. A balancing circuit applying this method is activated when the voltage of the corresponding cell reaches rated charge or discharge voltage. Based on the cell voltage, this method does not suffer the problem, occurring in conventional methods, of overcharge or overdischarge due to estimation errors of state-of-charge (SOC). In addition, the control circuit and designing process is simple without current feedback. The operating principles and energy transferring patterns for series connected batteries system and battery module system are analyzed. A flyback converter with the leakage inductance recycling mechanism is adopted as balancing circuit to realize the proposed method. Finally, a battery module composed of four series 3.3-V 15-Ah lithium iron phosphate (LiFePO4) batteries, balancing circuits for each battery, and a bidirectional converter is implemented to demonstrate the feasibility of the proposed balancing method.
Yi-YuanChung and 鍾義元. "Voltage Clamping Balance for Charging/Discharging Battery Module." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/5kyae4.
Повний текст джерела國立成功大學
電機工程學系
102
Battery power module (BPM) plays an important role in the applications of rechargeable batteries for its great flexibility and high reliability. Moreover, the unbalance phenomenon between batteries in different BPMs can be eliminated by controlling the power flow though BPMs. In conventional BPM balancing method, the output current between BPMs is distributed according to the state of charge (SOC) of each BPM. However, the accurate SOC is difficult to evaluate and the control scheme for battery balance is very complex. In order to solve these problems, this thesis proposes a battery system composed of several BPMs and a central control circuit with a novel battery balancing method. The control circuit of the battery system manages the input current/output voltage by adjusting the input/output power of battery modules. There are many advantages in the proposed method, including large total discharging capacity, simple control scheme, highly reliable and can be achieved without evaluating SOC. The BPM in this thesis is composed of four LiFePO4 batteries and a bidirectional converter. The central control circuit in the BPM is realized by using an analog IC to regulate the output voltage of the system or achieve the charging function of BPMs. Finally, the experimental results of the battery charging/discharging verify the feasibility of the proposed battery balancing method and high system reliability.
Lin, Yi-quan, and 林憶全. "Experiment of Charging and Discharging Strategies forRe-used Battery." Thesis, 2018. http://ndltd.ncl.edu.tw/handle/p227wp.
Повний текст джерела國立中山大學
電機工程學系研究所
107
Energy storage systems are considered important in the integration of large scale renewables in the power system. However, due to their high initial cost, the deployment of batteries in large renewable power plants to smooth the intermittent outputs are less popular. Due to the adoption of electrified transportation, large amount of used electrical vehicle batteries with state-of-health (SOH) that is good enough for backup power applications are becoming available. In this thesis, a DC-DC converter considering various levels of SOH and state-of-charge (SOC) of used batteries, a charging and discharging strategy is proposed to fully utilize the second life of the batteries. The control algorithm adopted is to seek for the equality of the SOC during the charging and discharging process such that the left capacity of the batteries could be fully utilized. Study results indicate that using the proposed strategies, it can reduce the initial cost of storage system to satisfy the load requirement and increase value of the batteries.
Wu, Huai-De, and 吳懷德. "STUDY OF CHARGING/DISCHARGING CONTROL SYSTEMS FOR LEAD-ACID BATTERYZENG." Thesis, 1995. http://ndltd.ncl.edu.tw/handle/97383621864833301370.
Повний текст джерелаChen, Cheng-Ping, and 陳正平. "Dynamics Analysis and Controller Design for Battery Charging and Discharging." Thesis, 2012. http://ndltd.ncl.edu.tw/handle/5s4q2j.
Повний текст джерела國立臺北科技大學
電機工程系研究所
100
This paper uses half bridge converter structure and PWM signal to control DC / DC converter high side and low side MOSFET switches. The proposed technique can achieve bi-direction energy transmission where the battery is charged when an outer source is attached, whereas the battery can also provide stable voltage when a load is attached. In order to ensure both charge and discharge modes can work well, we start from the state equations, derive the error equations, and find controller parameters. Then we can implement battery charge and discharge controller using the same state feedback gains. We use simulation software to verify feasibility and apply the obtained controller parameters on actual circuit to achieve both charge and discharge purpose. This structure is with advantages of simplifying circuit structure and cost reducing.
Yeh, Ing-Jye, and 葉英杰. "Contactless Bidirectional Charging and Discharging System for Complex Apartment Parking Lot." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/80524863341916671928.
Повний текст джерела國立中興大學
電機工程學系所
101
Contactless bidirectional charge and discharge technologies are promising technologies to be used in the vehicles which could be used to extend the usage of energy stored in the vehicle battery. As daily life of the vehicle battery is charged by the combustion engine, battery energy is mostly stayed in the saturated status. Since most energy requirement is provided by the alternator, energy stored in the battery is not fully used which causes a waste of energy. The purpose of this thesis is to develop a contactless charging and discharging system for the vehicle which is able to send the excessive battery energy to the energy storage system in the complex apartment parking lot and is able to be rechanged from the energy storage system. The idea "Many a little makes a mickle" to accumulate all vehicles’ excessive battery energy to boost the use of battery energy. To verify applicability of this energy conversion system, the simulation study has been conducted using the Protel Altium Designer 10 Software, which is used to select the components and determine related parameter values. Hardware implementation is also presented. Keywords: contactless bidirectional charging and discharging device, magnetic energy conversion, the resonant circuit
Cheng, Hung-Wei, and 鄭弘偉. "Optimal Charging and Discharging Control for Electric Vehicles in Parking Lot." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/hrjm85.
Повний текст джерела國立臺北科技大學
自動化科技研究所
102
Recently, there are a lot of issues regarding energy demand. For example, Some issers related to the nuclear and electricity, etc, is it an important to effectively use energy. Electric cars are the best representatives of environmental protection and the effective of energy. In this paper, we use the latest V2G(vehicle-to-grid) technology. So that the energy can contribute to the grid , and the solution will satisfy the power companies, car industry, and users .We use fuzzy inference system (Fuzzy Inference System) to calculate weighting factors and linear programming (linear programming) to find the optimal solution, It is different with other papers. In this paper, we design fuzzy theory to solve the problem of electric vehicle charging and discharging in a real-time systems, and we can reasonably explain that electric vehicles charging priorities or discharging priorities, and the solution satisfy the power companies, car industry, and the users.
Hsieh, Jia-Da, and 謝佳達. "Battery Charging/Discharging Test and Control System with Energy Saving Features." Thesis, 2009. http://ndltd.ncl.edu.tw/handle/15252270095035061998.
Повний текст джерела國立中正大學
電機工程所
97
This thesis presents development of battery charging/discharging test and control system with Energy-Saving features. This system is composed of an AC/DC bidirectional inverter with Power Factor Correction, a DC/DC bidirectional converter, a buck charger, a boost discharger and a LabVIEW human-machine interface. This system allows batteries to be charging and discharging at the same time. The discharged energy of the batteries can be recycled to charge batteries, and the excess discharged energy can be recycled with grid-connection, greatly reducing power consumption in the battery charging and discharging test process. The charging and discharging Current and Voltage waveforms can be recorded by the LabVIEW software package. In this study, we develop three chargers, three dischargers and a LabVIEW human-machine interface to verify the energy-recycle function. Comparing this system with the conventional one reveals that this system can save energy up to 73 %.
Chen, Jai-Bin, and 陳嘉斌. "Study of Charging and Discharging Characteristics of Battery for Electric Vehicle." Thesis, 1999. http://ndltd.ncl.edu.tw/handle/35295884701402166991.
Повний текст джерела國立彰化師範大學
工業教育學系
87
The purpose of this thesis is to study the charging and discharging characteristics of the battery usded in an electric vehicle. The electric vehicles are not yet widely accepted for replacement with conventional internal combustion engine cars, due to some unsolved technical problems. The main problem is long battery charging time. In the thesis, different charging techniques were analyzed to find out the charging techniques with shortest charging time and the highest charging efficiency. Another difficult problem associated with the development of electric vehicles is battery residual capacity prediction. A new approach to develop a battery state of charge indictor used in an electric vehicle is discribed and studied. This approach determines the state of charge by combining the open voltage and coulombmetric measurement technique. After elongated testing, the optimum prediction parameters were obtained and summarized.