Log in

Relevant bibliographies by topics / State of charge estimation / Dissertations / Theses

To see the other types of publications on this topic, follow the link: State of charge estimation.

Dissertations / Theses on the topic 'State of charge estimation'

Author: Grafiati

Published: 4 June 2021

Last updated: 26 July 2025

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Consult the top 50 dissertations / theses for your research on the topic 'State of charge estimation.'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Browse dissertations / theses on a wide variety of disciplines and organise your bibliography correctly.

1

Boman, Carl. "Embedded impedance based state-of-charge estimation." Thesis, KTH, Maskinkonstruktion (Inst.), 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-177673.

Full text

Abstract:

Estimating the battery state-of-charge is an important aspect of prolonging battery life and optimizing discharge cycles. In this thesis, a hybrid method for estimating state-of-charge for lead-acid batteries is developed and implemented in a motor controller. The method uses a combination of impedance measurements and a linear regression model for estimation. Measurements are done at stand-still. The method does not require sensors that are external to the motor controller or auxiliary battery connections other than terminal connections. The final estimation model shows good results but exhib

APA, Harvard, Vancouver, ISO, and other styles

2

Zhang, Klaus. "Comparison of Nonlinear Filtering Methods for Battery State of Charge Estimation." ScholarWorks@UNO, 2014. http://scholarworks.uno.edu/td/1896.

Full text

Abstract:

In battery management systems, the main figure of merit is the battery's SOC, typically obtained from voltage and current measurements. Present estimation methods use simplified battery models that do not fully capture the electrical characteristics of the battery, which are useful for system design. This thesis studied SOC estimation for a lithium-ion battery using a nonlinear, electrical-circuit battery model that better describes the electrical characteristics of the battery. The extended Kalman filter, unscented Kalman filter, third-order and fifth-order cubature Kalman filter, and the sta

APA, Harvard, Vancouver, ISO, and other styles

3

Bartlett, Alexander P. "Electrochemical Model-Based State of Charge and State of Health Estimation of Lithium-Ion Batteries." The Ohio State University, 2015. http://rave.ohiolink.edu/etdc/view?acc_num=osu1432640190.

Full text

APA, Harvard, Vancouver, ISO, and other styles

4

Schmidt, Alexander Patrick [Verfasser]. "A Novel Electrochemical Battery Model For State Of Charge And State Of Health Estimation / Alexander Patrick Schmidt." Aachen : Shaker, 2010. http://d-nb.info/1084536315/34.

Full text

APA, Harvard, Vancouver, ISO, and other styles

5

Hyun, Ji Hoon. "State of Health Estimation System for Lead-Acid Car Batteries Through Cranking Voltage Monitoring." Thesis, Virginia Tech, 2016. http://hdl.handle.net/10919/71796.

Full text

Abstract:

The work in this thesis is focused on the development and validation of an automotive battery monitoring system that estimates the health of a lead-acid battery during engine cranking and provides a low state of health (SOH) warning of potential battery failure. A reliable SOH estimation should assist users in preventing a sudden battery failure and planning for battery replacement in a timely manner. Most commercial battery health estimation systems use the impedance of a battery to estimate the SOH with battery voltage and current; however, using a current sensor increases the installation

APA, Harvard, Vancouver, ISO, and other styles

6

Martinsson, Patrik. "State of Charge Estimation in a High Temperature Sodium Nickel Chloride Battery Using Kalman Filter." Thesis, Linköping University, Department of Electrical Engineering, 2008. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-11173.

Full text

Abstract:

<p>In today’s heavy industry there are applications demanding high power supply in certain periods of a working cycle. A typical case might be startup of heavy machinery or just keeping a certain point in a distribution network at a certain energy level. To deal with this diﬀerent techniques might be used, one way is to introduce a battery as an energy reserve in the system. One battery studied at ABB for this purpose is the so called High Temperature Sodium Nickel Chloride battery and a model of this battery has been developed at ABB. When operating a battery of the mentioned type in an appli

APA, Harvard, Vancouver, ISO, and other styles

7

Shen, Jing Cong. "Time efficient state-of-charge estimation using open circuit voltage and the logarithmic modelling for battery management system." Thesis, University of British Columbia, 2016. http://hdl.handle.net/2429/59115.

Full text

Abstract:

Battery management systems are important devices for protecting batteries in various electrical and electronic applications. One of the most important features of a properly designed battery management system is the diagnostic techniques for estimating the remaining usable charge in batteries in a time effective manner. This thesis presents two time-efficient and reliable techniques that do not require complex electronic hardware for application. One technique concerns the open-circuit voltage characteristics of a battery while the other technique considers the logarithmic modeling of the equi

APA, Harvard, Vancouver, ISO, and other styles

8

Samolyk, Mateusz, and Jakub Sobczak. "Development of an algorithm for estimating Lead-Acid Battery State of Charge and State of Health." Thesis, Blekinge Tekniska Högskola, Sektionen för ingenjörsvetenskap, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:bth-2937.

Full text

Abstract:

In this paper, a state of charge (SOC) and a state of health (SOH) estimation method for lead-acid batteries are presented. In the algorithm the measurements of battery’s terminal voltage, current and temperature are used in the process of SOC calculation. The thesis was written in cooperation with Micropower AB. The algorithm was designed to fulfill the specific requirements of the electric vehicles application: an error below 5% of SOC, computational simplicity and the possibility of being implemented in a basic programming languages. The current used method at Micropower, Coulomb counting,

APA, Harvard, Vancouver, ISO, and other styles

9

Hu, Yiran. "Identification and State Estimation for Linear Parameter Varying Systems with Application to Battery Management System Design." The Ohio State University, 2010. http://rave.ohiolink.edu/etdc/view?acc_num=osu1281368350.

Full text

APA, Harvard, Vancouver, ISO, and other styles

10

Narayan, Anand. "State and Parametric Estimation of Li-Ion Batteries in Electrified Vehicles." Thesis, KTH, Elkraftteknik, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-217124.

Full text

Abstract:

The increasing demand for electric vehicles (EVs) has led to technological advancementsin the field of battery technology. State of charge (SOC) estimation is a vital function ofthe battery management system - the heart of EVs, and Kalman filtering is a commonmethod for SOC estimation. Due to the non uniformities in tuning and testing scenarios,quantifying performance of SOC estimation algorithms is difficult. Gathering data fordifferent operational scenarios is also cumbersome. In this thesis, SOC estimation algorithmsare developed and tested for a variety of scenarios like varying sensor noi

APA, Harvard, Vancouver, ISO, and other styles

11

Schaal, Peter. "Observer-based engine air charge characterisation : rapid, observer-assisted engine air charge characterisation using a dynamic dual-ramp testing method." Thesis, Loughborough University, 2018. https://dspace.lboro.ac.uk/2134/33247.

Full text

Abstract:

Characterisation of modern complex powertrains is a time consuming and expensive process. Little effort has been made to improve the efficiency of testing methodologies used to obtain data for this purpose. Steady-state engine testing is still regarded as the golden standard, where approximately 90% of testing time is wasted waiting for the engine to stabilize. Rapid dynamic engine testing, as a replacement for the conventional steady-state method, has the potential to significantly reduce the time required for characterisation. However, even by using state of the art measurement equipment, dy

APA, Harvard, Vancouver, ISO, and other styles

12

Andersson, Joakim. "Lifetime estimation of lithium-ion batteries for stationary energy storage system." Thesis, KTH, Skolan för kemivetenskap (CHE), 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-212987.

Full text

Abstract:

With the continuing transition to renewable inherently intermittent energy sources like solar- and wind power, electrical energy storage will become progressively more important to manage energy production and demand. A key technology in this area is Li-ion batteries. To operate these batteries efficiently, there is a need for monitoring of the current battery state, including parameters such as state of charge and state of health, to ensure that adequate safety and performance is maintained. Furthermore, such monitoring is a step towards the possibility of the optimization of battery usage su

APA, Harvard, Vancouver, ISO, and other styles

13

Varia, Adhyarth C. "In-Situ Capacity and Resistance Estimation Algorithm Development for Lithium-Ion Batteries Used in Electrified Vehicles." The Ohio State University, 2014. http://rave.ohiolink.edu/etdc/view?acc_num=osu1408665208.

Full text

APA, Harvard, Vancouver, ISO, and other styles

14

Merlinge, Nicolas. "State estimation and trajectory planning using box particle kernels." Thesis, Université Paris-Saclay (ComUE), 2018. http://www.theses.fr/2018SACLS425/document.

Full text

Abstract:

L'autonomie d'un engin aérospatial requière de disposer d'une boucle de navigation-guidage-pilotage efficace et sûre. Cette boucle intègre des filtres estimateurs et des lois de commande qui doivent dans certains cas s'accommoder de non-linéarités sévères et être capables d'exploiter des mesures ambiguës. De nombreuses approches ont été développées à cet effet et parmi celles-ci, les approches particulaires présentent l'avantage de pouvoir traiter de façon unifiée des problèmes dans lesquels les incertitudes d’évolution du système et d’observation peuvent être soumises à des lois statistiques

APA, Harvard, Vancouver, ISO, and other styles

15

Urbain, Matthieu. "Modélisation électrique et énergétique des accumulateurs Li-Ion. Estimation en ligne de la SOC et de la SOH." Thesis, Vandoeuvre-les-Nancy, INPL, 2009. http://www.theses.fr/2009INPL028N/document.

Full text

Abstract:

Ce mémoire traite de la modélisation électrique des accumulateurs lithium-ion, de l’estimation de leur état de charge (SOC) et de leur état de santé (SOH). Le premier chapitre revient sur les généralités concernant la technologie lithium-ion : caractéristiques, performances, constitution de l’élément de stockage, choix et nature des électrodes, conséquences qui en découlent d’un point de vue énergétique. Le principe de fonctionnement et les équations générales des phénomènes électrochimiques sont aussi développés. Des exemples d’application dans différents secteurs industriels sont ensuite pro

APA, Harvard, Vancouver, ISO, and other styles

16

Cambron, Daniel. "A Lithium Battery Current Estimation Technique Using an Unknown Input Observer." UKnowledge, 2016. http://uknowledge.uky.edu/ece_etds/84.

Full text

Abstract:

Current consumption measurements are useful in a wide variety of applications, including power monitoring and fault detection within a lithium battery management system (BMS). This measurement is typically taken using either a shunt resistor or a Hall-effect current transducer. Although both methods have achieved accurate current measurements, shunt resistors have inherent power loss and often require isolation circuitry, and Hall-effect sensors are generally expensive. This work explores a novel alternative to sensing battery current by measuring terminal voltages and cell temperatures and us

APA, Harvard, Vancouver, ISO, and other styles

17

Haines, Sam P. "Design and application of a smart battery management system for a small electric vehicle." Thesis, Queensland University of Technology, 2022. https://eprints.qut.edu.au/228154/1/Sam_Haines_Thesis.pdf.

Full text

Abstract:

This thesis outlines the development and application of a battery management system for a small electric vehicle, and the hardware required to test and validate these systems. The project applies state-of-the-art methods for estimating the remaining charge of a battery pack in a real-world environment. In doing so, the limitations of existing estimation methods are identified and addressed.

APA, Harvard, Vancouver, ISO, and other styles

18

Urbain, Matthieu. "Modélisation électrique et énergétique des accumulateurs Li-Ion. Estimation en ligne de la SOC et de la SOH." Electronic Thesis or Diss., Vandoeuvre-les-Nancy, INPL, 2009. http://www.theses.fr/2009INPL028N.

Full text

Abstract:

Ce mémoire traite de la modélisation électrique des accumulateurs lithium-ion, de l’estimation de leur état de charge (SOC) et de leur état de santé (SOH). Le premier chapitre revient sur les généralités concernant la technologie lithium-ion : caractéristiques, performances, constitution de l’élément de stockage, choix et nature des électrodes, conséquences qui en découlent d’un point de vue énergétique. Le principe de fonctionnement et les équations générales des phénomènes électrochimiques sont aussi développés. Des exemples d’application dans différents secteurs industriels sont ensuite pro

APA, Harvard, Vancouver, ISO, and other styles

19

Biserica, Monica Ionela. "Observabilité et reconstitution d'état des réseaux de distribution du futur." Thesis, Grenoble, 2011. http://www.theses.fr/2011GRENT085/document.

Full text

Abstract:

Dans le futur, les réseaux de distribution deviendront intelligents et actifs et seront utilisés au plus près de leurs limites car l'avènement de la dérégulation avec l'introduction massive de la production décentralisée induira une optimisation des infrastructures de l'énergie pour des besoins environnementaux d'une part, mais aussi par l'introduction de la concurrence dans un secteur autrefois monopolistique. Si on veut utiliser pleinement le potentiel des productions décentralisées dans les réseaux de distribution, on devra rendre ces réseaux observables au moyen de mesures qui seront intég

APA, Harvard, Vancouver, ISO, and other styles

20

Beyersmann, Jan. "On change in length of stay associated with an intermediate event estimation within multi-state models and large sample properties /." [S.l. : s.n.], 2005. http://deposit.ddb.de/cgi-bin/dokserv?idn=975570293.

Full text

APA, Harvard, Vancouver, ISO, and other styles

21

Bartholomäus, Ralf, and Henning Wittig. "Modellierung und Ladezustandsdiagnose von Lithium-Ionen-Zellen." TU Bergakademie Freiberg, 2019. https://tubaf.qucosa.de/id/qucosa%3A38498.

Full text

Abstract:

In diesem Beitrag wird ein neuer Ansatz zur Modellierung von Lithium-Ionen-Zellen vorgestellt, bei dem neben einem Modell zur Beschreibung des Nominalverhaltens der Zelle ein Unbestimmtheitsmodell parametriert wird, welches die unvermeidbare Abweichung zwischen dem Nominalmodell und dem tatsächlichen Zellverhalten quantifiziert. Für diese Modellbeschreibung wird ein neuer Algorithmus zur Ladezustandsdiagnose entwickelt, der anstelle eines einzelnen (fehlerbehafteten) Wertes für den Ladezustand ein Vertrauensintervall angibt sowie Artefakte im zeitlichen Verlauf des geschätzten Ladezustandes ve

APA, Harvard, Vancouver, ISO, and other styles

22

Yu, Kan Chi Kent. "Harmonic State Estimation and Transient State Estimation." Thesis, University of Canterbury. Electrical and Computer Engineering, 2006. http://hdl.handle.net/10092/1108.

Full text

Abstract:

This thesis describes the algorithms and techniques developed for harmonic state estimation and transient state estimation, which can be used to identify the location of disturbance sources in an electrical power system. The previous harmonic state estimation algorithm is extended to include the estimation of time-varying harmonics using an adaptive Kalman filter. The proposed method utilises two covariance noise models to overcome the divergence problem in traditional Kalman filters. Moreover, it does not require an optimal covariance noise matrix of the Kalman filter to be used. The co

APA, Harvard, Vancouver, ISO, and other styles

23

Zhu, Dan. "Energy management of the embedded hydride tanks considering efficiency degradation and life span on fuel cell vehicles." Thesis, Bourgogne Franche-Comté, 2020. http://www.theses.fr/2020UBFCA008.

Full text

Abstract:

Le développement des sources d'énergie alternatives devient très important en raison de l'effet du changement climatique et de l'épuisement des combustibles fossiles. L’hydrogène est prometteur grâce à sa ressource illimité, sa densité énergétique élevée, sa grande flexibilité technologique et sa nature respectueuse de l’environnement. Avec un potentiel élevé en matière de sécurité et de fiabilité, le stockage d'hydrogène avec des hydrures métalliques (MH) est considéré comme la meilleure méthode. Cette thèse contribue à l'étude des performances des systèmes de stockage de l’hydrogène MH embou

APA, Harvard, Vancouver, ISO, and other styles

24

Farzanehrafat, Ali. "Power Quality State Estimation." Thesis, University of Canterbury. Electrical and Computer Engineering, 2014. http://hdl.handle.net/10092/9830.

Full text

Abstract:

Traditional state estimation whereby the state of the system is assessed based on a limited number of measurements is a well established tool for steady-state situations where the frequency of the system is 50 Hz. Previous contributions have looked at extending this concept to the power quality area. This area of research is called Power Quality State Estimation (PQSE) and represents a class of techniques. Under the umbrella of PQSE, the main contribution of this work is taking Transient State Estimation (TSE) on step further. A new three-phase formulation for TSE using the Numerical Integrato

APA, Harvard, Vancouver, ISO, and other styles

25

Renfrow, Steven N. (Steven Neal). "Charge State Distributions in Molecular Dissociation." Thesis, University of North Texas, 1998. https://digital.library.unt.edu/ark:/67531/metadc278340/.

Full text

APA, Harvard, Vancouver, ISO, and other styles

26

Chiang, Meng-Che, and 江孟哲. "On-line State-of-Charge Estimation." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/17476118472509160459.

Full text

Abstract:

碩士<br>國立中央大學<br>光機電工程研究所<br>99<br>This thesis is to develop an on-line state-of-charge(SOC) estimation. Use the micro-controller, field programmable gate array and integrated circuit to construct it. Finally, using an algorithms to find Index(SOC) and look up table method can estimate SOC accurately.

APA, Harvard, Vancouver, ISO, and other styles

27

Vairamohan, Baskar. "State of charge estimation for batteries." 2002. http://etd.utk.edu/2002/VairamohanBaskar.pdf.

Full text

Abstract:

Thesis (M.S.)--University of Tennessee, Knoxville, 2002.<br>Title from title page screen (viewed Feb. 26, 2003). Thesis advisor: John Chiasson. Document formatted into pages (ix, 77 p. : ill. (some col.). Vita. Includes bibliographical references (p. [64]-65).

APA, Harvard, Vancouver, ISO, and other styles

28

Chang, Hui-pu, and 張惠普. "State-of-charge estimation for lithium battery." Thesis, 2007. http://ndltd.ncl.edu.tw/handle/56748432263100731912.

Full text

Abstract:

碩士<br>國立中央大學<br>光機電工程研究所<br>95<br>One of the most important tasks of the power lithium - ion battery management systems is to precisely estimate the current state of charge (SOC) of the batteries online.This paper presents a new, online, battery state-of-charge estimation and monitoring system for discharge periods of lithium - batteries, commonly used in telecommunication power systems. Our battery management system can perform both the online monitoring and SOC estimation tasks by the use of the same low-cost 8-bit micro-controller. The state equation for battery model and the system dynamic

APA, Harvard, Vancouver, ISO, and other styles

29

Yang, Hsin-Ying, and 楊欣穎. "Design and Implementation of a Contactless Charger with State-of-Charge Estimation." Thesis, 2007. http://ndltd.ncl.edu.tw/handle/45038137954471766871.

Full text

Abstract:

碩士<br>國立彰化師範大學<br>電機工程學系<br>95<br>Since the contactless charge system does not need any metallic contacts, it does not cause any contacting sparks and dust while the electric power is transmitting by electromagnetic coupling. It is also useful for safe protection due to avoiding dangers of leak and electric shock. Because of its contactless characteristic, the system can overcome some problems like dampish contact and aging rustiness. It also can apply to the special working place with high density of gas, or the place which is easy to be weathering due to salt and moisture. These thesis disc

APA, Harvard, Vancouver, ISO, and other styles

30

Liang, Keng-ju, and 梁耿儒. "A Microcontroller-Based Charger with State-of-Charge Estimation for LiCoO2 Battery." Thesis, 2012. http://ndltd.ncl.edu.tw/handle/05414250649366754556.

Full text

Abstract:

碩士<br>大同大學<br>電機工程學系(所)<br>100<br>In this thesis, a microcontroller-based charger of the LiCoO2 battery module is realized. The main structure of the proposed system is the power factor corrector device with a full-bridge phase-shift converter, its power factor upgrade close to 1.0, as well as to change the charging strategy according to the battery module’s state of charge. Furthermore, the full-bridge phase-shift converter control chip communicates with battery management system via the I2C interface, to change the full-bridge phase-shift converter charging strategy to short the charging tim

APA, Harvard, Vancouver, ISO, and other styles

31

Wu, Tsung-Hsi, and 吳宗禧. "State-of-Charge Estimation with State-of-Health Calibration for Rechargeable Batteries." Thesis, 2018. http://ndltd.ncl.edu.tw/handle/rt22yh.

Full text

Abstract:

博士<br>國立中山大學<br>電機工程學系研究所<br>106<br>This dissertation is focused on the improvement of state-of-charge (SOC) estimation with the coulomb counting method for rechargeable batteries by means of state-of-health (SOH) calibration. The proposed approach intends to provide an easy-to-use solution for on-line indication with high accuracy to estimate the battery status without the need of demanding calculations or hard-earned databases. To estimate the SOC of an aged battery more accurately, the degradation of its full capacity has to be taken into account. By scheduling the battery’s charging/discha

APA, Harvard, Vancouver, ISO, and other styles

32

Dong, Xin-Hong, and 董信宏. "Estimation of Battery Charge State in Solar PV System." Thesis, 2016. http://ndltd.ncl.edu.tw/handle/03286364109455567014.

Full text

Abstract:

碩士<br>國立臺灣大學<br>機械工程學研究所<br>104<br>This thesis aims to investigate how to improve the estimation of the battery performance of Independent Solar PV System. The first part of this thesis is to predict SOC (State Of Charge) of the brand-new battery in Independent Solar PV System. The second part of this research focus on SOC determination of fading batteries. SOC determination came with error due to the battery capacity loss. Hence, diagnosis of the battery degradation is necessary. If we can estimate SOH (State Of Health) accurately so that the result of SOH prediction could make SOC determinat

APA, Harvard, Vancouver, ISO, and other styles

33

Chen, Kai-Jui, and 陳開瑞. "State-of-Charge Estimation Method for LiFePO4Electric Vehicle Batteries." Thesis, 2012. http://ndltd.ncl.edu.tw/handle/70857444178419966994.

Full text

Abstract:

碩士<br>國立中山大學<br>電機工程學系研究所<br>100<br>Battery is the sole electrical energy source when electric vehicle(EV) is moving. To reduce traveling anxiety, an effective energy management system to indicate the state-of-charge (SOC) of the battery and make a balance between vehicle performance and endurance is very important. This research is aimed to develop a SOC estimation system with high accuracy. The proposed method in this thesis is based on under load voltage and multilevel Peukert''s equation to estimate the SOC. The proposed method is compared with the open circuit voltage method for

APA, Harvard, Vancouver, ISO, and other styles

34

Chen, Chih-Chung, and 陳志忠. "ESTIMATION OF THE STATE OF CHARGE FOR LI-ION BATTERY ON CHARGE STATE BY EQUIVALENT CIRCUIT MODEL." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/8ak5fz.

Full text

Abstract:

碩士<br>大同大學<br>電機工程學系(所)<br>102<br>For now electric devices work style are different. But most of the power sources are rechargeable Li-ion batteries. So Li-ion battery became life necessities. Therefore users must know behavior of battery. And they need to know state of charge (SOC). Then they can evaluate if the battery is able to complete the remaining work. If the remaining capacity is insufficient to use, users can replace the battery or charge immediately. That’s the purpose of this SOC estimation. In this thesis, we use an equivalent circuit model (ECM) (a RC circuit) to represent Li-ion

APA, Harvard, Vancouver, ISO, and other styles

35

Chang, Teng-yao, and 張登堯. "THE STATE OF CHARGE ESTIMATION FOR LI-ION BATTERY ON CHARGE AND DISCHARGE STATE BY EXTENDED KALMAN FILTER." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/88q2n9.

Full text

Abstract:

碩士<br>大同大學<br>電機工程學系(所)<br>102<br>To increase the life of the lithium-ion battery,and to improvethe safety andefficiency of the battery used, the accurate determination the battery's capacity is very important. Because of the complexity chemical and physical processes, the battery information that we can use is fewer and fewer. So estimation the state of charge is very difficult. In order to determine the state of charge, open-circuit voltage and battery's internal resistance are the important parameters for estimation the state of charge. Accurate estimation the state of charge can

APA, Harvard, Vancouver, ISO, and other styles

36

Chen, Hong-jhih, and 陳弘志. "ESTIMATION OF THE STATE OF CHARGE FOR LI-ION BATTERY ON CHARGE STATE BY FUZZY C-REGRESSION MODEL." Thesis, 2012. http://ndltd.ncl.edu.tw/handle/99376887103222302108.

Full text

Abstract:

碩士<br>大同大學<br>電機工程學系(所)<br>100<br>The Lithium-ion battery has high energy density, low self discharge and longer life. Thus, it is an excellent candidate for the HEV (hybrid electric vehicle). In order to increase the life of the lithium battery in HEV, so it is very important to determine the battery capacities, such as state of charge (SOC). SOC define the amount of charge. In order to determine SOC of battery, these two measures, open circuit voltage (OCV) and internal resistance of the battery are indispensable parameters that are obtained with difficulty through direct measurement. The st

APA, Harvard, Vancouver, ISO, and other styles

37

Hung, Min-Hsuan, and 洪敏軒. "Estimation Technique of State-of-Charge and State-of-Health Based on Dynamic Impedance and Applications for LiFePO4 Charger." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/vs3gt6.

Full text

Abstract:

博士<br>大同大學<br>電機工程學系(所)<br>102<br>This dissertation proposes a dynamic impedance method and a projection method to respectively estimate the state-of-charge (SOC) and the state-of-health (SOH) of batteries. For the proposed methods, we defined the ratio between the changes in voltage and the changes in current during the charging and discharging processes of battery modules as the dynamic impedance, which further served as the basis to calculate the SOC of the battery. The proposed techniques do not require initial values, and the proposed dynamic impedance can better reflect the true electric

APA, Harvard, Vancouver, ISO, and other styles

38

Wu, Ting-Tsai, and 吳丁財. "ESTIMATION OF THE STATE OF CHARGE FOR LI-ION BATTERY DISCHARGE." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/ns5sv7.

Full text

Abstract:

碩士<br>大同大學<br>電機工程學系(所)<br>102<br>In today’s society, portable electric devices are more popular. So what kind of battery it used very important. Rechargeable Li-ion battery fit portable electric devices required. But the behavior of battery is difficult to predict. So battery management system (BMS) became an important course. It provided for management, monitoring, and diagnosis optimum performance of a battery. And measurement of SOC is one basis function of the BMS, which indicates the remaining charge of the battery so that users can be reminded to charge the battery prior to its de

APA, Harvard, Vancouver, ISO, and other styles

39

Li, Jia-Xuan, and 李珈瑄. "THE STATE OF CHARGE ESTIMATION FOR LITHIUM BATTERY AT DYNAMIC TEMPERATURE." Thesis, 2016. http://ndltd.ncl.edu.tw/handle/45451026436219048159.

Full text

Abstract:

碩士<br>大同大學<br>電機工程學系(所)<br>104<br>In thesis, we will consider the relationship between state of charge (SOC) and temperature effect of lithium battery. The batteries are tested at 10℃~ 45℃. A first-order RC model is adopted as the equivalent circuit model (ECM) for the lithium battery. We will apply direct current internal resistance (DCIR) test to obtain the relationship between the parameters of the ECM and the SOC at 10℃~ 45℃ for the lithium battery. Besides, we will apply open circuit voltage (OCV) test to obtain the relationship of OCV with SOC. Polynomial function will be adopted to

APA, Harvard, Vancouver, ISO, and other styles

40

Hsiao, Yen-Jen, and 蕭硯仁. "STATE OF CHARGE ESTIMATION OF LI-ION BATTERY BY H∞ OBSERVER." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/96473716881414362926.

Full text

Abstract:

碩士<br>大同大學<br>電機工程學系(所)<br>101<br>Reliable and accurate state of charge (SOC) estimation can improve battery performance and reliability and prolong battery lifetime. The equivalent circuit model (ECM) is applied to approximate characteristic of the Li-ion battery. In order to obtain the unknown parameters of the ECM, the open circuit voltage (OCV) method and direct current internal resistance (DCIR) method are used to find the relationship between the parameters and SOC of the Li-ion battery. And then, the parameters will be calculated by the proposed method. The fuzzy c-regression model (FCR

APA, Harvard, Vancouver, ISO, and other styles

41

Lin, Ting-Da, and 林廷達. "Battery Modeling and State-of-Charge Estimation on Lithium-Ion Batteries." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/91936475872556799493.

Full text

Abstract:

碩士<br>國立東華大學<br>電機工程學系<br>99<br>This thesis introduces battery modeling and state-of-charge (SOC) estimation on lithium-ion batteries. Repeated many times intermittent discharge experiment on battery, and analysed the battery terminal voltage curve to find an appropriate battery model and equations of the battery model parameters. The model is based on circuit elements. It can simulate the battery voltage curve on charge or discharge. Approximate the dynamic behavior of the battery to save the battery test time spent. Finally, the battery model will then be used to form a real-time SOC estima

APA, Harvard, Vancouver, ISO, and other styles

42

Bibin, Nataraja Pattel. "An evaluation of the moving horizon estimation algorithm for online estimation of battery state of charge and state of health." Thesis, 2014. http://hdl.handle.net/1805/6293.

Full text

Abstract:

Indiana University-Purdue University Indianapolis (IUPUI)<br>Moving Horizon Estimation (MHE) is a powerful estimation technique for tackling the estimation problems of the state of dynamic systems in the presence of constraints, nonlinearities and disturbances and measurement noises. In this work, the Moving Horizon Estimation approach is applied in estimating the State of Charge (SOC) and State of Health (SOH) of a battery and the results are compared against those for the traditional estimation method of Extended Kalman Filter (EKF). The comparison of the results show that MHE provides

APA, Harvard, Vancouver, ISO, and other styles

43

Liu, Sung-Hsun, and 劉松洵. "Model-Based State of Charge and State of Health Estimation Method for Lithium-Ion Battery." Thesis, 2018. http://ndltd.ncl.edu.tw/handle/7dpawd.

Full text

Abstract:

碩士<br>大同大學<br>電機工程學系(所)<br>106<br>In this thesis, a state of charge (SOC) and state of health (SOH) estimation method for lithium-ion (Li-ion) battery is proposed. The proposed estimation method can be divided into three parts: (1) parameters identification; (2) SOH estimation; (3) and SOC estimation. A first-order RC model is adopted as the equivalent circuit model (ECM) of the battery in this thesis. The aging models are established by experiments. The parameters of the battery are identified by the proposed aging level estimation method and the recursive least square (RLS) method. A proper

APA, Harvard, Vancouver, ISO, and other styles

44

Chan, Bo-Ran, and 陳伯任. "Design and Implementation of Charger for Lead-Acid Battery with Function of State of Charge Estimation." Thesis, 2010. http://ndltd.ncl.edu.tw/handle/31276470242101400138.

Full text

Abstract:

碩士<br>聖約翰科技大學<br>電機工程系碩士班<br>98<br>This thesis proposed a novel charger for lead-acid battery with function of state of charge (SOC) estimation. The charger contains three kinds of charging mode: the constant current (CC) mode, the constant voltage (CV) mode and the constant pulse current (CPC) mode. Based on the modified coulometric method, the proposed charger used a digital signal processor (DSP) to estimate the SOC and residual charging time. An accurate and reliable estimation method of SOC for the lead acid battery is of considerable importance for continuity of service. But the dynamics

APA, Harvard, Vancouver, ISO, and other styles

45

Ding, Ci-syun, and 丁啟巡. "ONLINE STATE OF CHARGE ESTIMATION OF LI-ION BATTERY BY KALMAN FILTER." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/8j38m3.

Full text

Abstract:

碩士<br>大同大學<br>電機工程學系(所)<br>102<br>Lithium-ion batteries are commonly used in electronic products, in order to reduce unnecessary energy consumption, accurate state of charge estimation is necessary. This thesis will adopt the extended Kalman filter to estimation state of charge of the batteries. Firstly, a first order RC equivalent circuit model is adopted to simulate the battery characteristics. In order to find the parameters of the equivalent circuit model, we will use hybrid pulse current tests to simulate variety of battery usage. The experimental data show that these parameters with s

APA, Harvard, Vancouver, ISO, and other styles

46

Lin, Geng-da, and 林庚達. "State-of-Charge Estimation of Lithium Iron Phosphate Battery Using Grey Theory." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/10843025183841468003.

Full text

Abstract:

碩士<br>國立高雄第一科技大學<br>系統資訊與控制研究所<br>99<br>The lithium iron phosphate battery is a promising power source for electric vehicles (EVs) and hybrid electric vehicles (HEVs) due to its high specific energy and power. To ensure the batteries be reliable and capable of delivering power and energy when required, an accurate determination of available capacity, i.e., state-of-charge (SOC), is necessary. Moreover, it will prevent the battery from being over-charged or over -discharged and manage the energy flows of the vehicle. This research describes a real-time SOC indication method which combines open-

APA, Harvard, Vancouver, ISO, and other styles

47

Cai, Ming-Feng, and 蔡明峰. "The Study of Integrated State of Charge Estimation Method for LiFePO4 Battery." Thesis, 2012. http://ndltd.ncl.edu.tw/handle/86916966404929205441.

Full text

Abstract:

碩士<br>聖約翰科技大學<br>電機工程系碩士班<br>100<br>The thesis proposed a novel integrated state of charge (SOC) estimation method for LiFePO4 battery. The proposed integrated SOC estimation method is based on the Coulometric estimation method. By combining the open-circuit voltage estimation method, the weighted current estimation method and the modified Coulometric estimation method, the proposed estimation method can improve the accuracy of the conventional Coulometric estimation method. Using the battery as a continuous power supply, the estimation of SOC and residual using time is very important. Besides

APA, Harvard, Vancouver, ISO, and other styles

48

Li, Jheng-Sheng, and 李政昇. "Implementation of the Intelligent State of Charge Estimation System for Electric Motorcycle." Thesis, 2012. http://ndltd.ncl.edu.tw/handle/18925753314895924525.

Full text

Abstract:

碩士<br>高苑科技大學<br>電機工程研究所<br>100<br>This thesis utilizes the probabilistic neural network approach to develop the intelligent battery state of charge (SOC) estimation network. Based on the 8051 single-chip microprocessor, the electric motorcycle intelligent battery SOC estimation system is developed by embedding the probabilistic neural network SOC modeling firmware. Because of the advantage of the high power density, C-LiFePO4 battery is applied to develop the battery system to improve use efficiency and increase the electric motor load endurance. According to the random operational power disch

APA, Harvard, Vancouver, ISO, and other styles

49

Chen, Ruei-Ji, and 陳瑞基. "State-of-Charge Estimation Based on Kalman Filter for Lithium Ion Batteries." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/93493958931307903146.

Full text

Abstract:

碩士<br>國立東華大學<br>電機工程學系<br>99<br>Battery researchers often spend a lot of time in the processes of charging and discharging cycles. Evidently, the reason is that to study upon the batteries, charging and discharging on the batteries for several times are inevitable. However, if there is an appropriate and accurate battery model, simulations are possible and so that battery experiments are no longer so indispensable. On the other hand, the induced over-voltage while the battery is charged or discharged renders the directly measured loaded battery voltage inadequate to be an accurate index for th

APA, Harvard, Vancouver, ISO, and other styles

50

Chen, Jun-Yi, and 陳俊義. "State of Charge Estimation for LiFePO4 Battery Using Dual Extended Kalman Filter." Thesis, 2019. http://ndltd.ncl.edu.tw/handle/cwxf9k.

Full text

Abstract:

碩士<br>國立中山大學<br>電機工程學系研究所<br>107<br>This thesis proposes a dual Extended Kalman Filter (EKF) technique to estimate the State of Charge (SOC) of LiFePO4 battery based on a second-order RC equivalent model. Cell charging and discharging experiments are conducted to observe the changes in the circuit parameters and its effect of SOC estimation errors by using EKF. Taking into account of state of health and based on the SOC estimation errors after various numbers of charging and discharging cycles, suitable parameter update intervals are suggested to minimize SOC estimation. Battery module consist

APA, Harvard, Vancouver, ISO, and other styles

We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!