Thematische Bibliographien / Dymola

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Auswahl der wissenschaftlichen Literatur zum Thema „Dymola“

Autor: Grafiati

Veröffentlicht am 4. Juni 2021

Zuletzt aktualisiert am 25. April 2022

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Zeitschriftenartikel zum Thema "Dymola"

Roberts, Neil, Mike Dempsey und Alessandro Picarelli. „Detailed Powertrain Dynamics Modelling in Dymola - Modelica“. IFAC Proceedings Volumes 46, Nr. 21 (2013): 434–39. http://dx.doi.org/10.3182/20130904-4-jp-2042.00111.

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Li, Zhi Hua, Hong Guang Yang, Jun Yu und You Ping Gong. „Modeling and Simulation of the PMSM-Precision Reducer System with Modelica“. Applied Mechanics and Materials 201-202 (Oktober 2012): 202–7. http://dx.doi.org/10.4028/www.scientific.net/amm.201-202.202.

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There is still lack of effective modeling and simulation method for complex electromechanical coupling system. Modelica is a multi-domain unified modeling language to solve the modeling and simulation problems of the complex and heterogeneous physical systems. Dymola is a Modelica-based modeling and simulation platform for the complex physical systems. In this paper, the dynamics model of the permanent magnet synchronous motor (PMSM)-precision reducer system is established using Lagrange-Maxwell equation. The simulation model of this system is set up with Modelica language. The simulation of the system is realized in Dymola. Results show that the system can respond to good static and dynamic characteristics under a given speed for different loads. The dynamics model of the PMSM-precision reducer system can be further used in system control and optimization. The proposed modeling and simulation method based on Modelica may be commonly applied to other complex electromechanical systems.

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Ferretti, Gianni, Gianantonio Magnani, Paolo Rocco und Luca Viganò. „Modelling and simulation of a gripper with Dymola“. Mathematical and Computer Modelling of Dynamical Systems 12, Nr. 1 (Februar 2006): 89–102. http://dx.doi.org/10.1080/13873950500071405.

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Rodríguez, F., L. J. Yebra, M. Berenguel und S. Dormido. „MODELLING AND SIMULATION OF GREENHOUSE CLIMATE USING DYMOLA“. IFAC Proceedings Volumes 35, Nr. 1 (2002): 79–84. http://dx.doi.org/10.3182/20020721-6-es-1901.01322.

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M. Trajković, Dragana, und Branislav Dimitrijević. „BOND GRAPH MODEL OF THE SUBMERSIBLE PUMP“. Knowledge International Journal 28, Nr. 4 (10.12.2018): 1335–39. http://dx.doi.org/10.35120/kij28041335d.

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This paper presents application of the bond graph in modelling of the submersible pump. It is shown on this practical example that the use of Dymola software package will simplify the modelling and simulation. The bond graph modelling of the UPP pump is presented in this paper.

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Qiong-Zhong Chen, Yu-Feng Mo und Guang Meng. „Dymola-based modeling of SRD in aircraft electrical system“. IEEE Transactions on Aerospace and Electronic Systems 42, Nr. 1 (Januar 2006): 220–27. http://dx.doi.org/10.1109/taes.2006.1603417.

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Bhatkar, V. W. „DYNAMIC SIMULATION OF REFRIGERATION SYSTEM USING DYMOLA BEHAVIOR MODELING“. JP Journal of Heat and Mass Transfer 25 (01.01.2022): 99–107. http://dx.doi.org/10.17654/0973576322006.

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Dahl, Johan, und Daniel Andersson. „Engine air path management and exhaust condition modeling in Dymola“. International Journal of Engine Research 15, Nr. 8 (09.10.2014): 993–1008. http://dx.doi.org/10.1177/1468087414551908.

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Mehlhase, A. „A Python Package for Simulating Variable-Structure Models with Dymola“. IFAC Proceedings Volumes 45, Nr. 2 (2012): 1081–86. http://dx.doi.org/10.3182/20120215-3-at-3016.00191.

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Magallán, Guillermo A., Luis I. Silva, Cristian H. De Angelo und Guillermo O. García. „Rapid prototyping of electric vehicle controllers combining Dymola and Simulink“. International Journal of Electric and Hybrid Vehicles 4, Nr. 2 (2012): 197. http://dx.doi.org/10.1504/ijehv.2012.048357.

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Dissertationen zum Thema "Dymola"

Idnani, Sunil Charan 1964. „An ACSL interface for DYMOLA“. Thesis, The University of Arizona, 1991. http://hdl.handle.net/10150/291863.

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This MS thesis proposes the use of DYMOLA, an object-oriented language for modeling hierarchically structured systems, to generate ACSL simulation programs for continuous system analysis. An ACSL model described in terms of time dependent non-linear differential equations or transfer functions can be generated from a hierarchical model description of the system using DYMOLA. The model description in DYMOLA can be an equation description or a non-linear hierarchical bond graph abstraction to describe the system under investigation. The interface provides an automated method to generate ACSL simulation programs, hence eliminating the need for manual coding. The provision to specify an experiment description for run-time analysis and additional model statements is implemented. The implementation of the compiler's code generator includes parsing, error checking and system dependent file handling routines. Implementation techniques, model and control file specifications, and validation with examples in several application areas are described.

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Lannerhed, Petter. „Structural Diagnosis Implementation of Dymola Models using Matlab Fault Diagnosis Toolbox“. Thesis, Linköpings universitet, Fordonssystem, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-138753.

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Models are of great interest in many fields of engineering as they enable prediction of a systems behaviour, given an initial mode of the system. However, in the field of model-based diagnosis the models are used in a reverse manner, as they are combined with the observations of the systems behaviour in order to estimate the system mode. This thesis describes computation of diagnostic systems based on models implemented in Dymola. Dymola is a program that uses the language Modelica. The Dymola models are translated to Matlab, where an application called Fault Diagnosis Toolbox, FDT is applied. The FDT has functionality for pinpointing minimal overdetermined sets of equations, MSOs, which is developed further in this thesis. It is shown that the implemented algorithm has exponential time complexity with regards to what level the system is overdetermined,also known as the degree of redundancy. The MSOs are used to generate residuals, which are functions that are equal to zero given that the system is fault-free. Residual generation in Dymola is added to the original methods of the FDT andthe results of the Dymola methods are compared to the original FDT methods, when given identical data. Based on these tests it is concluded that adding the Dymola methods to the FDT results in higher accuracy, as well as a new way tocompute optimal observer gain. The FDT methods are applied to 2 models, one model is based on a system ofJAS 39 Gripen; SECS, which stands for Secondary Enviromental Control System. Also, applications are made on a simpler model; a Two Tank System. It is validated that the computational properties of the developed methods in Dymolaand Matlab differs and that it therefore exists benefits of adding the Dymola implementations to the current FDT methods. Furthermore, the investigation of the potential isolability based on the current setup of sensors in SECS shows that full isolability is achievable by adding 2 mass flow sensors, and that the isolability is not limited by causality constraints. One of the found MSOs is solvable in Dymola when given data from a fault-free simulation. However, if the simulation is not fault-free, the same MSO results in a singular equation system. By utilizing MSOs that had no reaction to any modelled faults, certain non-monitored faults is isolated from the monitored ones and therefore the risk of false alarms is reduced. Some residuals are generated as observers, and a new method for constructing observers is found during the thesis by using Lannerheds theorem in combination with Pontryagin’s Minimum Priniple. This method enables evaluation of observer based residuals in Dymola without any selection of a specific operating point, as well as evaluation of observers based on high-index Differential Algebraic Equations, DAEs. The method also results in completely different behaviourof the estimation error compared to the method that is already implemented inthe FDT. For example, one of the new observer-implementations achieves both an estimation error that converges faster towards zero when no faults are implementedin the monitored system, and a sharper reaction to implemented faults.

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Ahmed, Umair. „Racing Driver Model in Dymola Vehicle Dynamics Library (VDL) : Steering Controller Design“. Thesis, Karlstads universitet, Avdelningen för fysik och elektroteknik, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:kau:diva-11858.

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Racing drivers always want to traverse path at vehicle’s maximum performance limits while keeping the vehicle at its ideal trajectory. The main objective of this report is to elaborate strategy for the path following problem in which driver has to follow the predefined 2D roads. New steering controller design for closed loop racing driver model in Dymola vehicle dynamics library is developed. The methodology proposed by Sharp et al. [2] is followed with the optimal velocity profile that tries to mimic the actions of the real drivers in real time scenarios. Vehicle handling limits i.e. longitudinal and lateral limits are defined before simulation. While travelling in the neighbourhood of optimal velocity on the straight road as well as during the curves, the performance of the steering controller is tested by conducting the test on J turn, Clothoid, Extended chicane and the closing curve path and also tested during the different environment effects e.g. when there is a side wind affecting the vehicle. Performance of existing and new steering controllers discussed and compared in result chapter. It is ensured that the drawbacks in the existing steering controller are eliminated by using the proposed methodology in new implemented steering controller. Key Words: Driver Model, Steering Controller, Path following, Velocity profile

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Karlén, Johan. „Uncertainty Quantification of a Large 1-D Dynamic Aircraft System Simulation Model“. Thesis, Linköpings universitet, Reglerteknik, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-120189.

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A 1-D dynamic simulation model of a new cooling system for the upcoming Gripen E aircraft has been developed in the Modelica-based tool Dymola in order to examine the cooling performance. These types of low-dimensioned simulation models, which generally are described by ordinary differential equations or differential-algebraic equations, are often used to describe entire fluid systems. These equations are easier to solve than partial differential equations, which are used in 2-D and 3-D simulation models. Some approximations and assumptions of the physical system have to be made when developing this type of 1-D dynamic simulation model. The impact from these approximations and assumptions can be examined with an uncertainty analysis in order to increase the understanding of the simulation results. Most uncertainty analysis methods are not practically feasible when analyzing large 1-D dynamic simulation models with many uncertainties, implying the importance to simplify these methods in order to make them practically feasible. This study was aimed at finding a method that is easy to realize with low computational expense and engineering workload. The evaluated simulation model consists of several sub-models that are linked together. These sub-models run much faster when simulated as standalone models, compared to running the total simulation model as a whole. It has been found that this feature of the sub-models can be utilized in an interval-based uncertainty analysis where the uncertainty parameter settings that give the minimum and maximum simulation model response can be derived. The number of simulations needed of the total simulation model, in order to perform an uncertainty analysis, is thereby significantly reduced. The interval-based method has been found to be enough for most simulations since the control software in the simulation model controls the liquid cooling temperature to a specific reference value. The control system might be able to keep this reference value, even for the worst case uncertainty combinations, implying no need to further analyze these simulations with a more refined uncertainty propagation, such as a probabilistic propagation approach, where different uncertainty combinations are examined. While the interval-based uncertainty analysis method lacks probability information it can still increase the understanding of the simulation results. It is also computationally inexpensive and does not rely on an accurate and time-consuming characterization of the probability distribution of the uncertainties. Uncertainties from all sub-models in the evaluated simulation model have not been included in the uncertainty analysis made in this thesis. These neglected sub-model uncertainties can be included using the interval-based method, as a future work. Also, a method for combining the interval-based method with aleatory uncertainties is proposed in the end of this thesis and can be examined.

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Capodaglio, Cristina. „Modellazione in ambiente Dymola di una sottostazione di scambio termico bidirezionale per reti di teleriscaldamento attive“. Master's thesis, Alma Mater Studiorum - Università di Bologna, 2021.

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La commissione europea introduce i traguardi in ambito energetico da raggiungere entro il 2030, in particolare stabilisce la riduzione delle emissioni inquinanti, l’aumento della quota per le energie rinnovabili e il miglioramento dell'efficienza energetica. Inoltre, considerando che gli edifici rappresentano il più grande consumatore di energia in Europa, soprattutto per il riscaldamento degli ambienti e la produzione di ACS, si trovano a svolgere un ruolo determinante, in questo contesto energetico, le reti di teleriscaldamento. A tal proposito, è stato sviluppato, con l’ausilio del software Dymola, il modello dinamico di una sottostazione di scambio termico bidirezionale per reti di teleriscaldamento attive. I punti chiave per la realizzazione del modello sono: la bidirezionalità dei flussi termici, l’interazione tra gli scambiatori di calore e la gestione dei sistemi di controllo che regolano le logiche di funzionamento della sottostazione. La prima validazione del modello è stata eseguita con 7 simulazioni in regime stazionario che si distinguono per i livelli energetici di richiesta e produzione. Successivamente sono state svolte 8 prove in regime dinamico che rappresentano la transizione tra differenti scenari al variare nel tempo delle condizioni al contorno. Per ogni simulazione verrà riportato un confronto tra i risultati numerici e i dati sperimentali ottenuti dai test condotti da Eurac Research sul prototipo della sottostazione.

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Andreou, Spyros 1956. „Simulation of a solar-heated house using the bond graph modeling approach and the DYMOLA modeling software“. Thesis, The University of Arizona, 1990. http://hdl.handle.net/10150/277286.

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This thesis discusses the application of the bond graph modeling technique directly coded into the Dynamic Modeling Language (DYMOLA) for simulating a solar-heated house. Scientists throughout the years have investigated the exploitation of solar radiation for space heating. In this thesis, the physical behavior of such a system is modeled and simulated in a convenient, robust and fast manner. The bond graph modeling methodology has found widespread use in a wide range of systems. DYMOLA is a modeling language well suited to represent bond graphs. DYMOLA is a program generator that can map a topological system description, such as a bond graph, into a state-space description expressed in the form of a DESIRE simulation program.

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Maaraoui, Samer. „Étude et conception d'une pompe à chaleur résidentielle intégrant un stockage par chaleur latente“. Thesis, Paris, ENMP, 2013. http://www.theses.fr/2013ENMP0014/document.

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L'introduction des énergies renouvelables intermittentes, la mise en place d'une réglementation thermique qui baisse les besoins de chauffage d'un facteur 5 à 10, entraîne une re-conception des moyens de chauffage intégrant efficacité énergétique et effacement d'équipements domestiques lors des heures de pointe. Cette thèse comporte l'étude et la conception d'une PAC intégrant un stockage thermique par chaleur latente dans son condenseur. Ce stock permettra un effacement d'au moins deux heures. Les besoins d'une maison basse consommation (BBC) ont été évalués ainsi que la quantité de chaleur à stocker afin d'assurer cet effacement. Une étude sur le phénomène de changement de phase et les MCP a été menée afin de sélectionner un matériau adapté à cette application. Le phénomène de changement de phase a été modélisé en régime dynamique. Quatre matériaux candidats ont été sélectionnés et analysés par colorimétrie différentielle (DSC) avec ajustement par méthode inverse. Plusieurs structures de l'échangeur stockeur ont été proposées, simulées et optimisées et deux ont été choisies et réalisées. Les deux échangeurs réalisés ont été testés seuls et intégrés dans un système de PAC. La dernière génération a donné des résultats très encourageants pour le développement d'une PAC à stockage efficace. Finalement, l'apport de stockage a été évalué en termes d'efficacité énergétique et d'émissions de CO2. Cette PAC présente une amélioration potentielle du COP saisonnier de 20 à 30 % comparativement à des PAC air/eau et air/air du fait de la gestion intelligente du stockage/déstockage d'énergie en faisant fonctionner la PAC pendant les heures les plus favorables de la journée et en évitant les cycles courts de fonctionnement correspondant aux besoins thermiques faibles
The introduction of intermittent renewable energies, the implementation of a thermal regulation, which decreases heating needs of a factor between 5 and 10, causes a redesign of heating systems integrating energy efficiency and the cut-off of domestic equipments during peak hours. This thesis involves the study and design of a heat pump incorporating a latent thermal storage in its condenser. This storage will allow a cut-off during at least two hours. The heating needs of a low-energy consumption house (BBC) have been estimated as well as the heat amount to be stored so as to ensure such a cut-off. A study on the phase-change phenomenon and the PCM has been carried out in order to select suitable materials for this application. A dynamic model of the phase change was also developed. Four candidate materials were selected and analyzed by tuned Differential Scaning Calorimetry (DSC) with adjustment by the inverse method. Several storing-exchanger structures have been proposed, simulated, and optimized; two of them have been realized. Both heat exchangers have been tested alone and then integrated into a heat pump system. The final generation gave very promising results for the development of an efficient heat pump with storage. Finally, the heat storage effect has been evaluated in terms of energy efficiency and CO2 emissions. This heat pump presents potential improvement of the seasonal COP between 20% and 30% compared to air-to-water and air-to-air heat pumps because of the smart monitoring of the energy storage/delivery due to the heat pump operation during the most favorable hours of the day and by avoiding short cycles operation corresponding to low heating needs

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Wendelius, Ludvig. „Development of a SimulationModel of an Automatic Gearbox“. Thesis, Umeå universitet, Institutionen för fysik, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-58488.

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A simulation model for an automatic gearbox with primary retarder has been constructedand implemented, in this thesis. Together with other modelled vehicle components, thismodel could for example be used for fuel consumption estimation or optimizing vehicleparameters.The mechanical components and the control system inside the automatic gearbox weremodelled separately and then assembled into the nal gearbox model, using the objectorientedprogramming language Modelica. Modelica ensures that each individual componentcan be reused in other models.The gearbox model was validated through a number of test cycles designed to capturedierent vehicle behaviours. The test cycles were recreated in the simulation environmentand the simulation results could be compared to a real vehicle performing the same tests.Validation showed that the model succeeded in its goal, that the implemented model isreproducing similar behaviour as the real gearbox. With gear shifts taking place in aboutthe same situations and converter locking/unlocking occurring the same time in the simulationsas in the real vehicle testing.
I det här examensarbetet har en simuleringsmodell för en automatisk växellåda med primär retarder utvecklats och implementerats. Tillsammans med andra modeller från fordonoch drivlina skulle denna simuleringsmodell kunna användas för att uppskatta ett fordonsbränsleförbrukning eller till att optimera olika fordonsparametrar.De olika mekaniska komponenterna samt kontrollsystemet i växellådan modellerades separat.Dessa modeller kunde sedan sammanfogas för att bygga den slutliga växellådsmodellen.Alla modeller implementerades i det objektorienterade programmeringsspråket Modelica,som tillåter en stor återanvändningsbarhet till vardera enskild komponent.Den implementerade modellen verierades genom ett antal provcykler, utformade för attfånga olika beteenden hos växellådan. Dessa cykler har återskapats i simuleringsmiljön ochmed det kunde resultat från simuleringar jämföras mot data från ett verkligt fordon somutförde samma prov.Från verieringen har slutsatsen dragits att modellen uppfyllde målen med projektet. Målen var, att den slutliga simuleringsmodellen visar ett liknande beteende som en växellåda i ett verkligen fordon. Växlingar och låsning/upplåsning hos momentomvandlareninträande vid ungefär samma situationer i simuleringarna som i provningen med det verkligafordonet.

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Noguer, Nicolas. „Aide à l'analyse fiabiliste d'une pile à combustible par la simulation“. Thesis, Belfort-Montbéliard, 2015. http://www.theses.fr/2015BELF0261/document.

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Le fonctionnement de la pile à combustible (PAC) de type PEM (à membrane polymère) est encore soumis à de nombreuses incertitudes, aux natures différentes, qui affectent ses performances électriques, sa fiabilité et sa durée de vie. L'objectif général de cette thèse est de proposer une méthode d'aide à l'évaluation de la fiabilité des PAC par la simulation ; la fiabilité étant vue ici comme la garantie d’accéder à un niveau de performance électrique donné dans les différentes conditions d’usage envisagées pour la PAC. La démarche proposée s’appuie sur un couplage physico-fiabiliste où la complexité des phénomènes physiques présents dans la pile est prise en compte par une modélisation de connaissance, dynamique, symbolique et acausale, développée dans l’environnement Modelica - Dymola. La modélisation retenue, monodimensionnelle, non isotherme inclut une représentation diphasique des écoulements fluidiques pour mieux retranscrire la complexité des échanges d’eau dans le coeur de la pile PEM. La modélisation permet aussi d’intégrer des incertitudes sur certains de ses paramètres physiques et semi-empiriques (classés en trois catégories : opératoires, intrinsèques et semi-empiriques) puis d’entreprendre, par des tirages de Monte-Carlo, la modélisation probabiliste des conséquences des incertitudes injectées sur la performance d’une PAC. Il est ainsi possible, par la suite, d’estimer la fiabilité d’une PAC par le calcul de la probabilité que la performance électrique reste supérieure à un seuil minimal à définir en fonction de l’application. Une analyse physico-fiabiliste détaillée a été menée en introduisant à titre d’exemple une incertitude sur la valeur de la porosité de la couche de diffusion cathodique d’une PAC de type PEM (coefficients de variation retenus : 1%, 5% et 10%). L’étude des conséquences de cette incertitude sur la tension et l’impédance d’une PAC a été menée en réalisant un plan d’expériences numériques et en mettant en oeuvre différents outils d’analyse statistique : graphes des effets, analyses de la variance, graphes des coefficients de variation des distributions en entrée et sortie du modèle déterministe. Dans cet exemple d’analyse et dans les conditions d’usages considérées, le taux de fiabilité prévisionnel (probabilité pour que la cellule de pile fournisse un minimum de tension de 0.68V) a été estimé à 91% avec un coefficient de variation d’entrée à 10%
The Proton Exchange Membrane Fuel Cell (PEMFC) operation is subject to inherent uncertainty in various material, design and control parameters, which leads to performance variability and impacts the cell reliability. Some inaccuracies in the building process of the fuel cell (in the realization of the cell components and also during the assembly of the complete fuel cell stack), some fluctuations in the controls of the operating parameters (e.g. cell and gas temperatures, gas pressures, flows and relative humidity rates) affect the electrical performance of the cell (i.e. cell voltage) as well as its reliability and durability. For a given application, the selections of the different materials used in the various components of the electrochemical cell, the choices in the cell design (geometrical characteristics / sizes of the cell components) correspond to tradeoffs between maximal electrical performances, minimal fuel consumption, high lifespan and reliability targets, and minimal costs.In this PhD thesis, a novel method is proposed to help evaluating the reliability of a PEMFC stack. The aim is to guarantee a target level of electrical performance that can be considered as sufficient to meet any application requirements. The approach is based on the close coupling between physical modeling and statistical analysis of reliability. The complexity of the physical phenomena involved in the fuel cell is taken into account through the development of a dynamical, symbolic, acausal modeling tool including physical and semi-empirical parameters as well. The proposed knowledge PEMFC model is one-dimensional, non-isothermal and it includes a two-phase fluidic flow representation (each reactant is considered as a mix of gases and liquid water) in order to better take into account the complexity of the water management in the cell. The modeling is implemented using the MODELICA language and the DYMOLA software; one of the advantages of this simulation tool is that it allows an effective connection between multi-physical modeling and statistical treatments. In this perspective, the modeling is done with the aim of having as much relevant physical parameters as possible (classified in our work as operating, intrinsic, and semi-empirical parameters). The different effects of these parameters on the PEMFC electrical behavior can be observed and the performance sensitivity can be determined by considering some statistical distributions of input parameters, which is a step towards reliability analysis.A detailed physical and reliability analysis is conducted by introducing (as an example) an uncertainty rate in the porosity value of the cathodic Gas Diffusion Layer (coefficients of variance equal to 1%, 5% and 10%). The study of the uncertainty consequences on the cell voltage and electrical impedance is done through a design of numerical experiments and with the use of various statistical analysis tools, namely: graphs of the average effects, statistical sensitivity analyses (ANOVAs), graphs displaying the coefficients of variances linked with the statistical distributions observed in the inputs and outputs of the deterministic model. In this example of analysis and in the considered cell operating conditions, the provisional reliability rate (probability that the cell voltage is higher than 0.68V) is estimated to 91% with an input coefficient of variance equal to 10%

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Bengtsson, Sara. „Modelling of a Power System in a Combined Cycle Power Plant“. Thesis, Uppsala universitet, Elektricitetslära, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-149318.

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Simulators for power plants can be used for many different purposes, like training for operators or for adjusting control systems, where the main objective is to perform a realistic behaviour for different operating conditions of the power plant. Due to an increased amount of variable energy sources in the power system, the role of the operators has become more important. It can therefore be very valuable for the operators to try different operating conditions like island operation. The aim of this thesis is to model the power system of a general combined-cycle power plant simulator. The model should contain certain components and have a realistic behaviour but on the same time be simple enough to perform simulations in real time. The main requirements are to simulate cold start, normal operation, trip of generator, a controlled change-over to island operation and then resynchronisation. The modelling and simulations are executed in the modelling software Dymola, version 6.1. The interface for the simulator is built in the program LabView, but that is beyond the scope of this thesis. The results show a reasonable performance of the power system with most of the objectives fulfilled. The simulator is able to perform a start-up, normal load changes, trip of a generator, change-over to island operation as well as resynchronisation of the power plant to the external power grid. However, the results from the changing-over to island operation, as well as large load losses during island operation, show an unreasonable behaviour of the system regarding the voltage magnitude at that point. This is probably due to limitations in calculation capacity of Dymola, and the problem has been left to further improvements due to lack of time. There has also been a problem during the development of a variable speed regulated induction motor and it has not been possible to make it work due to lack of enough knowledge about how Dymola is performing the calculations. Also this problem has been left to further improvements due to lack of time.

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Bücher zum Thema "Dymola"

Ritchie, Anne Thackeray. Mrs. Dymond. Stroud, Gloucestershire: Sutton Pub., 1997.

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The Dymock poets. Bridgend, Mid Glamorgan: Seren, 1994.

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Williams, KaShamba. Dymond in the rough. Bear, Del: Precioustymes Entertainment, 2004.

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Quick, Amanda. Dymka v zerkalakh: Roman. Moskva: AST, 2005.

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Mechell, Audrey. Dyma fy stori, dyma fy nghân. [s.l.]: [s.n.], 2001.

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Tessa, Krailing. Dyma drwbwl. Caerdydd: Gwasg Addysgol Drake, 2002.

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Gordon, Mike. Dyma fi. Caerdydd: C.B.A.C., 1995.

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Hughes, Ann Tegwen. Dyma Gerallt. Penygroes: Gwasg Dwyfor, 1989.

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Jones, Richard. Dyma fy stori. Caernarfon: Gwasg Gwynedd, 1986.

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Cowley, Joy. Dyma Guto'n dod. Pontypridd: Uned Iaith Genedlaethol Cymru, 1991.

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Mehr Quellen

Buchteile zum Thema "Dymola"

Weinmann, Alexander. „DYMOLA“. In Computerunterstützung für Regelungsaufgaben, 43–45. Vienna: Springer Vienna, 1999. http://dx.doi.org/10.1007/978-3-7091-6389-4_5.

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Hockey, Thomas. „Dymond, Joseph“. In Biographical Encyclopedia of Astronomers, 629. New York, NY: Springer New York, 2014. http://dx.doi.org/10.1007/978-1-4419-9917-7_393.

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Smoller, Laura Ackerman, Michelle Chapront‐Touzé, Mihkel Joeveer, Ian T. Durham, M. J. Martres, David M. Rust, Jacques Lévy et al. „Dymond, Joseph“. In The Biographical Encyclopedia of Astronomers, 320. New York, NY: Springer New York, 2007. http://dx.doi.org/10.1007/978-0-387-30400-7_393.

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Khare, C. P. „Astragalus sarcocola Dymock.“ In Indian Medicinal Plants, 1. New York, NY: Springer New York, 2007. http://dx.doi.org/10.1007/978-0-387-70638-2_172.

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Gilbert, Bob, Richard Kemmerer, Christopher Kruegel und Giovanni Vigna. „Dymo: Tracking Dynamic Code Identity“. In Lecture Notes in Computer Science, 21–40. Berlin, Heidelberg: Springer Berlin Heidelberg, 2011. http://dx.doi.org/10.1007/978-3-642-23644-0_2.

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Georgiadis, Dimosthenis, Panagiotis Germanakos, George Samaras, Constantinos Mourlas und Eleni Christodoulou. „An Intelligent Web-Based Healthcare System: The Case of DYMOS“. In Annals of Information Systems, 19–46. Boston, MA: Springer US, 2010. http://dx.doi.org/10.1007/978-1-4419-1274-9_3.

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Vilajosana, Xavier, Daniel Lázaro, Joan Manuel Marquès und Angel A. Juan. „DyMRA: A Decentralized Resource Allocation Framework for Collaborative Learning Environments“. In Intelligent Collaborative e-Learning Systems and Applications, 147–69. Berlin, Heidelberg: Springer Berlin Heidelberg, 2009. http://dx.doi.org/10.1007/978-3-642-04001-6_10.

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Mannaerts, Pieter. „Letetur Hybernia, Jubilans Antverpia: The Chant and Cult of St Dympna of Gheel“. In Ritus et Artes, 123–59. Turnhout: Brepols Publishers, 2017. http://dx.doi.org/10.1484/m.ritus-eb.5.111068.

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Savage, Anne. „Clothing Paternal Incest in The Clerk’s Tale, Émaré and the Life of St Dympna“. In Medieval Women: Texts and Contexts, 345–61. Turnhout: Brepols Publishers, 2000. http://dx.doi.org/10.1484/m.mwtc-eb.3.3651.

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Sydow, Achim, Thomas Lux, Peter Mieth, Matthias Schmidt und Steffen Unger. „The DYMOS Model System for the Analysis and Simulation of Regional Air Pollution“. In Modellierung und Simulation im Umweltbereich, 209–19. Wiesbaden: Vieweg+Teubner Verlag, 1997. http://dx.doi.org/10.1007/978-3-322-90906-0_11.

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Konferenzberichte zum Thema "Dymola"

Shen, Jiwu, Konstanty Masiulaniec und Abdollah Afjeh. „Turbojet Engine Simulation Using Dymola“. In 42nd AIAA/ASME/SAE/ASEE Joint Propulsion Conference & Exhibit. Reston, Virigina: American Institute of Aeronautics and Astronautics, 2006. http://dx.doi.org/10.2514/6.2006-4796.

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Uddin, Kotub, und Alessandro Picarelli. „Phenomenological Li ion battery modelling in Dymola“. In the 10th International Modelica Conference, March 10-12, 2014, Lund, Sweden. Linköping University Electronic Press, 2014. http://dx.doi.org/10.3384/ecp14096327.

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Picarelli, Alessandro, Eduardo Galindo und Gonzalo Diaz. „Thermal shock testing for Engines in Dymola“. In the 10th International Modelica Conference, March 10-12, 2014, Lund, Sweden. Linköping University Electronic Press, 2014. http://dx.doi.org/10.3384/ecp1409689.

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Deuring, Andreas, Johannes Gerl und Harald Wilhelm. „Multi-Domain Vehicle Dynamics Simulation in Dymola“. In The 8th International Modelica Conference, Technical Univeristy, Dresden, Germany. Linköping University Electronic Press, 2011. http://dx.doi.org/10.3384/ecp1106313.

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Dempsey, Mike. „Dymola for Multi-Engineering Modelling and Simulation“. In 2006 IEEE Vehicle Power and Propulsion Conference. IEEE, 2006. http://dx.doi.org/10.1109/vppc.2006.364294.

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Chen, Xiangping, Qinmu Wu, Zetao Li und Minhui Wang. „Investigation of a CHP-EES based on Dymola“. In 2015 IEEE International Conference on Signal Processing, Communications and Computing (ICSPCC). IEEE, 2015. http://dx.doi.org/10.1109/icspcc.2015.7338938.

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Braun, Marco, Roland Caesar, Dirk Limperich, Katrin Prölß und Gerhard Schmitz. „Simulation of a Vehicle Refrigeration Cycle with Dymola/Modelica“. In SAE 2005 World Congress & Exhibition. 400 Commonwealth Drive, Warrendale, PA, United States: SAE International, 2005. http://dx.doi.org/10.4271/2005-01-1899.

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Fořtová, Anna, und Filip Ježek. „VVER 1000 Pressurizer System and Control Modelling in Dymola“. In 2018 26th International Conference on Nuclear Engineering. American Society of Mechanical Engineers, 2018. http://dx.doi.org/10.1115/icone26-81263.

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Annotation:

The pressurizer is responsible for controlling the pressure and temperature in the primary circuit of the nuclear power plant. It is basically a pressure vessel, filled partially with water and partially with steam at saturation state. The controlling process can be described by two regimes, either by the self-control regime or by the automatic control regime. This paper is describing the simplified automatic control regime on the model of the pressurizer in the primary circuit of VVER 1000 made in Dymola software with the ClaRa library. Reactor power change and corresponding steam generator power change are the actuators in the simulation. The behaviour of the coolant level and pressure in the pressurizer is simulated in the model and it is then compared with data provided by the supplier of VVER 1000.

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Åkesson, Johan, Ulf Nordström und Hilding Elmqvist. „Dymola and Modelica_EmbeddedSystems in Teaching – Experiences from a Project Course“. In The 7 International Modelica Conference, Como, Italy. Linköping University Electronic Press, 2009. http://dx.doi.org/10.3384/ecp09430086.

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Edrén, J., M. Jonasson, A. Nilsson, A. Rehnberg, F. Svahn und A. S. Trigell. „Modelica and Dymola for education in vehicle dynamics at KTH“. In The 7 International Modelica Conference, Como, Italy. Linköping University Electronic Press, 2009. http://dx.doi.org/10.3384/ecp09430112.

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