Relevant bibliographies by topics / Thyristor converters Automatic control

Academic literature on the topic 'Thyristor converters Automatic control'

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Published: 10 December 2022
Last updated: 28 January 2023

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Journal articles on the topic "Thyristor converters Automatic control"

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Kuznetsov, V. A., G. D. Polkovnikov, V. E. Gromov, V. A. Kuznetsova, and O. A. Peregudov. "High power current pulse generator based on reversible thyristor converter." Izvestiya. Ferrous Metallurgy 62, no. 12 (January 15, 2020): 964–71. http://dx.doi.org/10.17073/0368-0797-2019-12-964-971.

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In metal forming using high power current pulses, it becomes necessary to control both reproduction frequency and pulse amplitude. Description of a generator of high power current pulses with controlled thyristor converter is provided as a power source of charging device (charger) for regulating voltage (pulse amplitude) of capacitor charge. Faults of the generators associated with inrush current in capacitor charge modes are revealed, which reduces quality of supply network. To reduce time of transient processes while lowering voltage across capacitors, application of reverse thyristor converter is applied as a power source. Structural diagram of generator is considered, which includes reversible thyristor converter with separate control, power unit, capacitor recharge device, charger parameters automatic control system and capacitor charge process control system. Calculation of parameters of automatic control system regulators is presented. To obtain optimal transients, standard methodology for setting regulators to a modular optimum was used. In order to reduce overshoot at time of disturbances appearance, which can reach 100 % and higher, socalled logical device was introduced into the automatic control system. It blocks control pulses on thyristors of converter and simultaneously reduces signal at the output of current regulator to zero. Simulation model of high power current pulse generator in MatLab – Simulink environment was synthesized. Analysis of the model was carried out, and graphs are given that explain principle of device operation and transition processes under various operating modes. Generator application will allow user to adjust amplitude of current pulses with high speed and to obtain sufficiently high-quality transient processes of capacitors charge (discharge), which will have beneficial effect on supply network. Application of better converters will significantly increase frequency of reproduction of current pulses.
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Lei, Zhaoyu, Jianyi Guo, Yingfu Tian, Jiemin Yang, Yinwu Xiong, Jie Zhang, Ben Shang, and Youping Fan. "Thyristor Aging-State-Evaluation Method Based on State Information and Tensor Domain Theory." Electronics 10, no. 21 (November 5, 2021): 2700. http://dx.doi.org/10.3390/electronics10212700.

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The thyristor is the key device for the converter of the ultra-high-voltage DC (UHVDC) project to realize AC–DC conversion. The reliability of thyristors is directly related to the safe operation of the UHVDC transmission system. Due to the complex operating environment of the thyristor, there are many interrelated parameters that may affect the aging state of thyristors. To extract useful information from the massive high-dimensional data and further obtain the aging state of thyristors, a supervised tensor domain classification (STDC) method based on the adaptive syn-thetic sampling method, the gradient-boosting decision tree, and tensor domain theory is proposed in this paper. Firstly, the algorithm applies the continuous medium theory to analogize the aging state points of the thyristor to the mass points in the continuous medium. Then, the algorithm applies the concept of the tensor domain to identify the aging state of the thyristor and to transform the original state-identification problem into the state classification surface determination of the tensor domain. Secondly, a temporal fuzzy clustering algorithm is applied to realize automatic positioning of the classification surface of each tensor sub-domain. Furthermore, to solve the problem of unbalanced sample size between aging class data and normal class data in the state-identification domain, the improved adaptive synthetic sampling algorithm is applied to preprocess the data. The gradient-boosting decision tree algorithm is applied to solve the multi-classification problem of the thyristor. Finally, the comparison between the algorithm proposed and the conventional algorithm is performed through the field-test data provided by the CSG EHV Power Transmission Company of China’s Southern Power Grid. It is verified that the evaluation method proposed has higher recognition accuracy and can effectively classify the thyristor states.
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Tarasovsky, Timofey S., and Arnold O. Limberg. "System of contactless automatic voltage regulation of BARN with thyristor-reactor switching device." Innotrans, no. 2 (2021): 49–53. http://dx.doi.org/10.20291/2311-164x-2021-2-49-53.

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The functional scheme of a closed system of contactless automatic voltage regulation of a converter unit with a thyristor-reactor switching device TRSD for voltage regulation is considered. The proposed external characteristics of the converter unit with the BARN and TRSD system when using the TRSNP-12500/10 converter transformer are presented. An algorithm for generating a control signal for an executive controlled thyristor – reactor switching device by the controller of the system – the SHAUN 6 cabinet-is considered, based on which the stable external characteristics of the converter are implemented on a laboratory physical model of a converter unit with a 30 kVA converter transformer.
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Melnykov, V. "DESIGN OF THE POWER TRANSISTOR ENERGY CONVERTERS FOR AUTOMATED DC-DRIVE SYSTEMS." Electromechanical and energy saving systems 2, no. 53 (2021): 31–39. http://dx.doi.org/10.30929/2072-2052.2021.2.54.31-39.

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Purpose. One of the integral parts of modern mechatronic motion modules, where electric motors provide the conversion of electrical energy into useful mechanical action, are power semiconductor converters. At the current stage of industrial development, the use of energy converters as a part of a fully controlled semiconductor switches opens wide opportunities for the development and implementation of highly efficient resource- and energy-saving devices. Methodology. Two types of converters are widely used in automated DC electric drive systems: controlled thyristor rectifiers and pulse-width DC converters, the principle of operation of which is based on the key mode of operation of the regulating semiconductor, which periodically connects the source voltage to the output circuit. The paper presents a laboratory sample of a power semiconductor DC energy converter, which can ensure reliable motor operation in both motor and braking modes. Results. The presented transistor energy converter consists of two main parts: the first part performs the main role – control, and it includes a control unit, a microcontroller, and a device for displaying current information. The second part is a power module, which includes the necessary power supply modules, control drivers and power transistor switches of the converter. To obtain high quality transients of the electric drive system, the circuit is equipped with additional sensors of current, voltage and speed, which takes part in the formation of the control signal and in the protection systems against overvoltage and current jumps. Practical value. The paper substantiates the parameters of the components and proposes developed technical solutions for the construction of a microprocessor control system for a transistor DC energy converter. It is shown that in order to ensure a constant generator mode in automated electric drive systems, where the primary energy converter is an uncontrolled rectifier, it is expedient to install an energy discharge circuit in the DC link. References 18, figures 14.
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Metelkov, Vladimir P., and Yakov L. Liberman. "Сhoosing the Belt Conveyor Start Mode." Electrotechnical Systems and Complexes, no. 2(43) (June 28, 2019): 54–59. http://dx.doi.org/10.18503/2311-8318-2019-2(43)-54-59.

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The paper is concerned with the problems associated with starting a long conveyor driven by an induction motor. We consider the dynamic loads in the conveyor belt during start-up, which cause slippage of the conveyor belt on the traction drum leading to its premature deterioration. The relevance of the topic is associated with the high cost of the conveyor belt reaching 60% of the cost of the entire conveyor and more. The aim of the work is to ascertain the possibilities of reducing the wear of the conveyor belt, for example, through the use of the possibilities provided by the system of the electric drive. The possibility of reducing the probability of the conveyor belt slippage by increasing the initial belt tension is noted. However, constant high tension also accelerates belt deterioration. To solve this problem, the use of automatic tension control devices is proposed, as well as the reduction of dynamic loads in the belt by using soft starters based on a thyristor voltage converter, which regulates the amplitude of voltage on the motor stator. The features of an asynchronous motor heating when starting with a constant speed of rotation of the magnetic field are discussed. The interrelation between the start-up duration and the motor stator winding heating with the dynamic loads occurring in the conveyor belt in start-up modes is considered. Modeling results obtained using the Simulink package are presented. Since long start-up modes of asynchronous electric drives based on thyristor voltage converters can lead to motor overheating, especially when the conveyor is restarted under full load and in hot climates, it is advisable to use automatic conveyor belt tension control devices during start-up modes thereby reducing premature belt deterioration together with a decrease in the conveyor motor heating.
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Wang, Qin. "Design on AC/DC Converter Based on DSP56000 Processor." Applied Mechanics and Materials 539 (July 2014): 523–26. http://dx.doi.org/10.4028/www.scientific.net/amm.539.523.

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On the basis of incomplete three function mathematical principle, the method of using three point interpolation and undetermined coefficient can solve control circuit equation, which can realize the automatic conversion circuit of the AC/DC current, to achieve very good automatic control effect. In order to verify the effectiveness and reliability of the mathematical model, this paper designs twelve pulse thyristor full wave circuit current conversion experiment, the core of circuit analysis uses Web circuit computer online control system and Motorala development DSP56000 processor, and using the RAM port and the bus carry out communication. Finally, the system is introduced the design of Internet Web ideological and political education platform, to provide the technical support for the ideological and political Internet online education.
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Goun, Valentina S., Aleksandr S. Anikin, and Aleksey A. Bakin. "Experimental determination of suboptimal parameters for energy-efficient control of an induction motor." International Journal of Power Electronics and Drive Systems (IJPEDS) 11, no. 4 (December 1, 2020): 2173. http://dx.doi.org/10.11591/ijpeds.v11.i4.pp2173-2182.

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The article presents the results of experimental studies of the automatic speed control system (ASCS) of an induction motor (IM). Preliminary experimental studies have shown that the stator current minimum (power factor) is a suboptimal criterion. Optimal in terms of control is the rated power factor. Tests of IM with a thyristor voltage converter (TVC), as a power source, were conducted on an installation created at the department. A mathematical model of ASCS IM corresponding to the experimental setup has been developed. To determine the main functional dependences of IM, such as stator voltage, stator current, power factor, torque on the shaft, a program for approximating experimental data by polynomials was developed. Using the developed mathematical model, the regulatory characteristic of IM that was optimal from an energy point of view was obtained. The necessary indicators of IM and TVC are determined (thyristor control angle, stator voltage, stator current) to change existing settings in order to save electric energy. The results of experimental studies are presented, the graph shows an optimized version of the form of the regulatory characteristic according to the criterion of minimum electric energy consumption.
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Grabovskii, Vladimir. "Estimation of Damage Rotor Shaft of Turbogenerators with a Diode Brushless Excitation System." Известия высших учебных заведений. Электромеханика 64, no. 4-5 (2021): 90–98. http://dx.doi.org/10.17213/0136-3360-2021-4-5-90-98.

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The damage to the rotor shafts of high-power turbo generators is estimated as a result of the resonant in-teraction between the generator and the exciter caused by the operation of the automatic excitation regulator (AER) by mathematical modeling. The analysis covers turbo generators with a capacity of 300 to 1000 MW with a diode brushless excitation system (DBES). The simulated circuit includes a turbo generator with a block transformer, a power transmission line, an exciter in the form of a reversed synchronous generator with a rotat-ing rectifier diode converter unit, a static thyristor converter, and a sub-exciter in the form of a synchronous machine with permanent magnets. When modeling the electrical part, an approach is used from the positions of its own coordinates, which ensures maximum methodological consistency of the models of the listed devices and allows directly reproducing resonant phenomena at torsional vibration frequencies with the determination of instantaneous values of currents, voltages and electromagnetic moments of the turbo generator and exciter. The mechanical system is presented taking into account the exciter and sub-exciter as a seven-mass system. AER is introduced into the mathematical model by means of transfer functions with corresponding coefficients and time constants. The control system of the thyristor converter is represented in the model by a generator of line-arly increasing signals, a body for comparing these signals with the signal from the AER and a control pulse generator. To assess the damage rate, the deformation criterion for soft and hard loads in the zone of low-cycle fatigue and the force criterion in the zone of multi-cycle fatigue were used. A comparative quantitative assess-ment of the damage in the neck of the G-E shaft line in the resonant interaction between the exciter and the generator with different automatic excitation control systems is given. The influence of attenuation of electro-magnetic transients and damping of torsional vibrations on the damage values is analyzed. The results ob-tained can be used to analyze the functioning and determine the settings of the AER.
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Afanasev, Sergey, and Alexandr Pakhomov. "Current Limitation in the DC Electric Drive System with Modal Control and Variable Structure." Известия высших учебных заведений. Электромеханика 65, no. 4 (2022): 58–63. http://dx.doi.org/10.17213/0136-3360-2022-4-58-63.

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An effective method of current limitation in the DC electric drive closed system with modal control under various op-erating modes of the electric motor has been developed and investigated. The control object is the DC motor of inde-pendent excitation, powered by a thyristor converter. The automatic control theory methods were used to solve the problem. The method of current limitation of the DC motor armature circuit in a closed system with modal control and variable structure has been studied. The coefficients synthesis of the modal current controller and the rotation speed of the DC motor armature has been made. The simulation of transient processes of starting, braking, reversing and stopping the DC motor has been carried out. The control process quality is assessed by analyzing the transients of a closed electric drive system in the MatLab dynamic systems modeling environment. Recommendations are given on the parameter choice of relay links to ensure the effective current limitation. The operability of the electric drive system was checked with the engine parameters being varied. In general, the proposed current limiting method copes with its task successfully though being sensitive to the relay elements settings.
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Rudykh, A. V., and S. V. Sukyasov. "Power control of electric heating elements using thyristor voltage and resistance converters." iPolytech Journal 26, no. 2 (July 6, 2022): 310–19. http://dx.doi.org/10.21285/1814-3520-2022-2-310-319.

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This article investigates the energy efficiency of thyristor converters with an active load. The conversion of electric energy in a “thyristor converter – electric heating element” installation is considered from the standpoint of electromagnetic theory. The energy characteristics of the considered installation was calculated in the MATLAB environment. When thyristor voltage converters are operated under the mode of controlling the power of active load, passive power was found to be generated at the input during the non-conductive state of the converter (thyristor is locked). The use of passive power allows additional thermal energy to be obtained by means of an extensive use of voltage, without increasing the current consumption. An increase in the depth of power control of electric heating elements by thyristor voltage converters leads to a significant increase in passive power. In the active power control range (50–100% of the nominal value), the factor accounting for variations in the total power in the converter due to an incomplete use of the voltage at the input of the considered installation decreases from 1.0 to 0.93. This reduces the power factor of the load converter from 0.97 to 0.925. Despite the high value of the load power factor (in the control interval 0–50% of the rated power value), the factor accounting for variations in the total power was found to be reduced to 0.66. As a result, the power factor of the converter with the load is reduced by ~ 33%. In order to increase the efficiency of converting electrical energy to control the active load power, it is proposed to use thyristor resistance converters that vary the electrical resistance of the load over time. It is shown that unsatisfactory operation of a thyristor voltage converter can be caused by inefficient use of voltage at the input of the “thyristor converter – electric heating element” installation. When using thyristor resistance converters, the current non-sinusoidality factor does not exceed 1.5 % and the voltage non-sinusoidality factor in a 0.38 kV network does not exceed 0.2 %.
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Dissertations / Theses on the topic "Thyristor converters Automatic control"

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張華 and Hua Zhang. "Digital vector control of forced-commutated cycloconverter drives." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 1994. http://hub.hku.hk/bib/B31234574.

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Zhang, Hua. "Digital vector control of forced-commutated cycloconverter drives /." [Hong Kong] : University of Hong Kong, 1994. http://sunzi.lib.hku.hk/hkuto/record.jsp?B1594847X.

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Hadjeras, Sabrina. "Hybrid control of power converters." Thesis, Toulouse 3, 2019. http://www.theses.fr/2019TOU30087.

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Cette thèse propose la conception de lois de commandes hybrides pour les convertisseurs électroniques de puissance. Ce nouveau type de lois de commande est basé sur l'utilisation de modèles hybrides qui capturent les comportements dynamiques macroscopiques de ces dispositifs électroniques, essentiellement leur nature hybride. Dans le contexte de la régulation des convertisseurs DC-DC ou AC-DC, en appliquant la théorie des systèmes hybrides, il est ainsi prouvé que les lois de commandes proposées assurent la stabilité de la boucle fermée ainsi que certaines performances de type LQ. Pour un onduleur en demi-pont (convertisseur DC-AC), une loi de commande hybride est proposée afin que la tension de sortie suive une référence sinusoïdale souhaitée. Dans le cas d'une charge inconnue, une loi de commande adaptative est alors couplée à la commande hybride permettant l'estimation de la charge et donc une régulation ou un suivi de trajectoire plus précis. Notons que pour obtenir une régulation ou un suivi parfait, une fréquence infinie est souvent obligatoire pour les lois de contrôle proposées, ce qui est inappropriée en pratique. Pour résoudre ce problème, une régularisation de l'espace d'état ou du temps est ajoutée à la boucle fermée assurant un temps de maintien entre deux sauts consécutifs et réduisant ainsi considérablement la fréquence de commutation
This thesis proposes the design of hybrid control laws for power electronics converters. These new type of control laws are based on some hybrid models which capture the macroscopic dynamical behaviors of such electronic devices, essentially its hybrid nature. In the context of the regulation of DC-DC or AC-DC converters, applying the hybrid dynamical theory, the proposed control laws are proved to ensure the stability of the closed loop as well as some LQ performances. For a half-bridge inverter (DC-AC converter), a hybrid control law is proposed in order that the output voltage tracks a desired sinusoidal reference. In the case of unknown load, an adaptive control law is coupled to the hybrid control allowing the estimation of the load and therefore leading to a more precise regulation or tracking. Notice that in order to achieve a perfect regulation or tracking, an infinite frequency is often mandatory for the proposed control laws, which is inappropriate in practice. To tackle this problem, a space- or time-regularization are added to the hybrid closed-loop ensuring a dwell time between two consecutive jumps and reducing thus drastically the switching frequency
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Poyiadjis, Soteris. "A New Cell Bypass Arrangement and Control for Modular Multilevel Converters based on Thyristor Forced Commutation Circuit." Thesis, KTH, Skolan för elektro- och systemteknik (EES), 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-201660.

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HVDC transmission lines are a competitive and in some cases are proven to bea superior choice compared to AC transmission applications. Suitable convertershave been developed for that matter where Modulär Multilevel Converters (MMC)are highly preferred due to their low losses, no filtering requirementsand direct andfast control of AC and DC side. However, the overall eciency of the converteris higher than of a six pulse voltage source converter, it is still lower than the linecommutated converter type.In this master thesis an attempt to decrease the conduction losses of the MMC isinvestigated. A new cell structure design used in MMC is proposed along with itsassociated control strategy. The main idea is to divert the current at steady stateoperation through thyristors, which have lower conduction resistance than IGBTsthat are used in MMC topologies, at time intervals where the capacitor is bypassedfrom the cell. This new cell commutation is tested initially in the lab and thenthe whole structure operation is validated on a 3 phase MMC PSCAD model. Theresults from the lab confirmed the commutation of the new cell and the results fromthe 3 phase model showed that the new cell structure does not disturb the normaloperation of the MMC. A rough loss comparison that have been conducted betweenthe new cell structure and a half bridge that is used in a typical MMC, showed thatthe first one was less efficient. For that reason a generalized concept is introducedwhich promise higher efficiency than of the proposed concept.
HVDC transmission är ett fördelaktigt sätt att överföra eekt i jämförelse med ACtransmission. Omriktare har utvecklats för att passa applikationen, där ModularMultilevel Converters (MMC) har visat sig passa bra för HVDC på grund av de lågaförlusterna och dess obentliga krav på lter. Dessutom har de en direkt och snabbkontrollteori på både AC och DC sidan. Även om dess totala verkningsgrad är högreän hos six-pulse voltage source converter (VSC) men lägre än Line CommutatedConverter (LCC).Detta exjobb innefattar att minska ledningsförlusterna i MMCn. En ny designav cell strukturen föreslås, tillsammans med en passande kontrollteori. Idén äratt, på grund av dess lägre ledningsresistans använda tyristorer snarare än IGBTervilka annars är vanliga i MMCer, detta då kondensatorn är förbikopplad.. Dennya cellstrukturen testas initialt experimentellt i laboratorium och hela systemetvalideras genom simulering av en 3-fas MMC modell i PSCAD. De experimentellaresultaten bekräftade att den nya modellen fungerar och de simulerade resultatenvisar att den föreslagna topologin inte stör funktionen hos MMCn. En jämförelsemellan den nya topologin och den konventionella halvbridge strukturen har gjorts,där den föreslagna topologin hade lägre verkningsgrad. Istället har en generelltkoncept introducerats för att utlova en högre verkningsgrad än den först föreslagnatopologin.
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Sastry, Jyoti. "Direct AC control of grid assets." Diss., Georgia Institute of Technology, 2011. http://hdl.handle.net/1853/41109.

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The objective of the proposed research is to investigate feasible approaches to dynamic control of the power grid. Growth in the demand for electric power, and an increase in the penetration of renewable energy resources are causing congestion on an already aging power grid. Conventional grid control involves the use of static assets that operate on long time scales. These assets provide no dynamic control on the grid, and are typically used for scheduled support. Existing solutions (FACTS devices) to dynamic grid control have seen minimal market penetration because of high cost and low reliability. The proposed research provides a solution for dynamic control of the power grid that augments existing grid assets with a thin AC converter (TACC) to realize enhanced dynamic control. The TACC is a direct AC converter with filter elements and no bulk energy storage that dynamically reflects the asset value on the grid. The converter has a fail-normal mode of operation that returns the asset to its initial operating state, thereby not degrading system reliability. Some applications of TACCs include Inverter-Less STATCOMs and Controllable Network Transformers, which are realized by augmenting shunt VAR capacitors and load tap changers respectively. The principle of virtual quadrature sources is proposed to enable conditioning of AC voltages and currents. The concept is a novel method to realize control of phase angle and, or harmonics in single-phase AC converters, with no bulk energy storage. This concept is used to control the TACC and provides the asset with significantly enhanced control capabilities. Scaling of the TACC to utility voltage and power levels has been addressed by proposing a novel multilevel direct AC converter. The concept proposes the use of commercially available low cost semiconductor devices to realize high power converters. The specific application chosen to validate the concept of TACCs, through a medium voltage design, is the Inverter-less STATCOM.
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Billis, Gerald. "The design and evaluation of a microprocessor-controlled triac cycloconverter two-phase induction motor drive." Thesis, Hong Kong : University of Hong Kong, 1989. http://sunzi.lib.hku.hk/hkuto/record.jsp?B1285072X.

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Beneux, Gaëtan. "Développement de stratégies de contrôle pour le pilotage des convertisseurs avec prise en compte des aspects dynamiques événementiels." Thesis, Université de Lorraine, 2018. http://www.theses.fr/2018LORR0123/document.

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Les travaux de cette thèse portent sur l’analyse de stabilité et la synthèse de commandes robustes pour les systèmes affines à commutation en temps continu en présence d’incertitudes paramétriques constantes. On propose deux méthodes de commande permettant de garantir la stabilité asymptotique globale des systèmes affines à commutation avec paramètres inconnus. La première approche est basée sur l’estimation des paramètres inconnus et la reconstruction de l’état d’équilibre associée pour permettre d’appliquer une commande robuste adaptative. La seconde méthode est basée sur une augmentation d’état par l’ajout d’une action intégrale dans la boucle de commande qui garantit une erreur statique nulle. Pour chaque approche, deux lois de commande sont proposées. Une méthode du type « min switching » qui sélectionne la commutation la plus apte à stabiliser le système et une méthode de type « Embedded » permettant de générer une commande polytopique des différents modes possibles. Les résultats sont appliqués aux convertisseurs de puissance de topologie Flyback avec preuve de stabilité dans les deux modes de conduction (continue et discontinue)
This PhD thesis is focused on stability analysis and robust control synthesis for continuous time switching affine systems in presence of constant parametric uncertainties. Two control methods are proposed to guarantee global asymptotic stability of switching affine systems with unknown parameters. The first approach is based on the estimation of the unknown parameters and the reconstruction of the related equilibrium state to allow the application of a robust adaptive control. The second method is based on a state augmentation by adding an integral action in the control loop that guarantees a null steady state error. For each approach, two control laws are proposed. A "min switching" method that selects the most suitable mode to stabilize the system and an "Embedded" method that generates a polytopic control of the different possible modes. The results are applied to Flyback topology power converters with proof of stability in both conduction modes (continuous and discontinuous)
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Jaafar, Ali. "Contribution à la modélisation, l'analyse et l'optimisation de lois de commande pour convertisseurs DC-DC de puissance." Phd thesis, Supélec, 2011. http://tel.archives-ouvertes.fr/tel-00644419.

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L'utilisation des convertisseurs de puissance pour des applications de la vie quotidienne devient de plus en plus importante. Les applications technologiques actuelles demandent simultanément un haut niveau de précision et de performance, ainsi les convertisseurs DC-DC ont un rôle très important dans les systèmes nécessitant la conversion et l'adaptation du niveau d'énergie. Nous nous intéressons dans le cadre des travaux de cette thèse à une analyse des approches de modélisation et de synthèse de loi de commande permettant d'assurer la stabilité et un certain niveau de performances dans l'ensemble du domaine de fonctionnement défini par un cahier des charges tout en prenant en compte la problématique de leur application dans un environnement industriel. L'objectif de nos travaux de recherche est donc de proposer des lois de commandes dont la synthèse est fondée sur une approche formalisé {modélisation + commande} en vue d'obtenir des lois de commande adaptées au point de fonctionnement. Les principes exploités sont fondés sur la commande et l'observation par modes glissants d'une part, et sur la théorie de passivité pour la synthèse des lois de commande, complétées par un couple {observateur d'état + estimateur de charge} dont la synthèse est fondée sur l'exploitation des principes d'immersion et invariance, d'autre part. Le souci de la validation expérimentale et de l'implantation des structures de commande avec du matériel disponible industriellement a été en permanence un fil conducteur. Pour démontrer l'efficacité des méthodes proposées, leur application expérimentale a été effectuée sur un convertisseur de type SEPIC. Ce convertisseur présente plusieurs avantages par rapport à autres convertisseurs. Cependant, il reste peu exploité, en dépit de ces avantages, en raison des difficultés pour obtenir des lois commande performantes permettant la stabilisation de sa tension de sortie dans tout l'ensemble du domaine de fonctionnement.
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Sattouf, Mousa. "Systém snímání dat a ovládání vodní elektrárny prostřednictvím internetové techniky." Doctoral thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2015. http://www.nusl.cz/ntk/nusl-233685.

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Vodní energie se nyní stala nejlepším zdrojem elektrické energie na zemi. Vyrábí se pomocí energie poskytované pohybem nebo pádem vody. Historie dokazuje, že náklady na tuto elektrickou energii zůstávají konstantní v průběhu celého roku. Vzhledem k mnoha výhodám, většina zemí nyní využívá vodní energie jako hlavní zdroj pro výrobu elektrické energie.Nejdůležitější výhodou je, že vodní energie je zelená energie, což znamená, že žádné vzdušné nebo vodní znečišťující látky nejsou vyráběny, také žádné skleníkové plyny jako oxid uhličitý nejsou vyráběny, což činí tento zdroj energie šetrný k životnímu prostředí. A tak brání nebezpečí globálního oteplování. Použití internetové techniky k ovladání několika vodních elektráren má velmi významné výhody, jako snížení provozních nákladů a flexibilitu uspokojení změny poptávky po energii na straně spotřeby. Také velmi efektivně čelí velkým narušením elektrické sítě, jako je například přidání nebo odebrání velké zátěže, a poruch. Na druhou stranu, systém získávání dat poskytuje velmi užitečné informace pro typické i vědecké analýzy, jako jsou ekonomické náklady, predikce poruchy systémů, predikce poptávky, plány údržby, systémů pro podporu rozhodování a mnoho dalších výhod. Tato práce popisuje všeobecný model, který může být použit k simulaci pro sběr dat a kontrolní systémy pro vodní elektrárny v prostředí Matlab / Simulink a TrueTime Simulink knihovnu. Uvažovaná elektrárna sestává z vodní turbíny připojené k synchronnímu generátoru s budicí soustavou, generátor je připojen k veřejné elektrické síti. Simulací vodní turbíny a synchronního generátoru lze provést pomocí různých simulačních nástrojů. V této práci je upřednostňován SIMULINK / MATLAB před jinými nástroji k modelování dynamik vodní turbíny a synchronního stroje. Program s prostředím MATLAB SIMULINK využívá k řešení schematický model vodní elektrárny sestavený ze základních funkčních bloků. Tento přístup je pedagogicky lepší než komplikované kódy jiných softwarových programů. Knihovna programu Simulink obsahuje funkční bloky, které mohou být spojovány, upravovány a modelovány. K vytvoření a simulování internetových a Real Time systémů je možné použít bud‘ knihovnu simulinku Real-Time nebo TRUETIME, v práci byla použita knihovna TRUETIME.
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Murray, Nick. "Flexible power control in large power current source conversion : a thesis presented for the degree of Doctor of Philosophy in Electrical and Computer Engineering at the University of Canterbury, Christchurch, New Zealand /." 2008. http://hdl.handle.net/10092/2610.

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Books on the topic "Thyristor converters Automatic control"

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Faĭnshteĭn, V. G. Mikroprot͡s︡essornye sistemy upravlenii͡a︡ tiristornymi ėlektroprivodami. Moskva: Ėnergoatomizdat, 1986.

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Leonard, Sokoloff, ed. Analog and digital control systems. Englewood Cliffs, NJ: Prentice-Hall, 1988.

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Ranʹkis, I. I͡A. Optimizat͡sii͡a parametrov tiristornykh sistem impulʹsnogo regulirovanii͡a ti͡agovogo ėlektroprivoda. Riga: "Zinatne", 1985.

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Meeting, IEEE Industry Applications Society. Microprocessor control of motor drives and power converters. New York: The Society, 1991.

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Dubovoĭ, N. D. Avtomaticheskie mnogofunkt͡s︡ionalʹnye izmeritelʹnye preobrazovateli. Moskva: "Radio i svi͡a︡zʹ", 1989.

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Pérez, José Rodríguez. Predictive control of power converters and electrical drives. Chichester, West Sussex, UK: Wiley, 2012.

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Ahmed, Mohammad. Sliding mode control for switched mode power supplies. Lappeenranta: Lappeenranta University of Technology, 2004.

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Zolotova, T. M. Rezervirovanie analogovykh ustroĭstv avtomatiki. 2nd ed. Moskva: Ėnergoatomizdat, 1986.

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Henryk, Tunia, ed. Automatic control of converter-fed drives. Amsterdam: Elsevier, 1994.

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Laurila, Lasse. Analysis of torque and speed ripple producing non-idealities of frequency converters in electric drives. Lappeenranta: Lappeenranta University of Technology, 2004.

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Book chapters on the topic "Thyristor converters Automatic control"

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Arango, E., C. A. Ramos-Paja, D. Gonzalez, S. Serna, and G. Petrone. "Automatic Parameters Calculation of Controllers for Photovoltaic dc/dc Converters." In Electrical Engineering and Control, 431–40. Berlin, Heidelberg: Springer Berlin Heidelberg, 2011. http://dx.doi.org/10.1007/978-3-642-21765-4_54.

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Xie, Guang-jun, Xuan Chuan, and Lin Chen. "Nonlinear Averaged Models of Boost Converters Operating in the Continuous Conduction Mode." In 2011 International Conference in Electrics, Communication and Automatic Control Proceedings, 1311–17. New York, NY: Springer New York, 2011. http://dx.doi.org/10.1007/978-1-4419-8849-2_168.

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Schneider, F. "OPTIMUM PLASMA CONTROL USING THYRISTOR POWER CONVERTERS." In Fusion Technology 1992, 927–31. Elsevier, 1993. http://dx.doi.org/10.1016/b978-0-444-89995-8.50179-x.

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Pivnyak, G., M. Rogoza, Yu Papaika, and A. Lysenko. "Traction and energy characteristics of no-contact electric mining locomotives with AC current thyristor converters." In Power Engineering, Control and Information Technologies in Geotechnical Systems, 1–6. CRC Press, 2015. http://dx.doi.org/10.1201/b18475-1.

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Merdassi, Asma, Laurent Gerbaud, and Seddik Bach. "Automatic Modelling Approach for Power Electronics Converters: Code Generation (C S Function, Modelica, VHDL-AMS) and MATLAB/Simulink Simulation." In MATLAB for Engineers - Applications in Control, Electrical Engineering, IT and Robotics. InTech, 2011. http://dx.doi.org/10.5772/19715.

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Conference papers on the topic "Thyristor converters Automatic control"

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Soto-Sanchez, Diego, Manuel Martinez-Gomez, Ivan Andrade, and Ruben Pena. "Alternate Arm Converter with Thyristor-based Director Switches." In 2018 IEEE International Conference on Automation/XXIII Congress of the Chilean Association of Automatic Control (ICA-ACCA). IEEE, 2018. http://dx.doi.org/10.1109/ica-acca.2018.8609752.

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Leuer, Michael, Michael Lonneker, and Joachim Bocker. "Direct Model Predictive Control strategy for multi-phase thyristor matrix converters." In 2015 IEEE International Symposium on Predictive Control of Electrical Drives and Power Electronics (PRECEDE). IEEE, 2015. http://dx.doi.org/10.1109/precede.2015.7395589.

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Leuer, Michael, Michael Lonneker, and Joachim Bocker. "Model predictive control strategy for multi-phase thyristor matrix converters — Advantages, problems and solutions." In 2016 18th European Conference on Power Electronics and Applications (EPE'16 ECCE Europe). IEEE, 2016. http://dx.doi.org/10.1109/epe.2016.7695350.

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Yuqin, Xu, Wang Zengping, and Zhang Hai. "The Automatic Following Control of Arc Suppression Coil with Thyristor Switched Capacitors." In 2006 1ST IEEE Conference on Industrial Electronics and Applications. IEEE, 2006. http://dx.doi.org/10.1109/iciea.2006.257174.

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Sung-An Kim, Gab-Jin Han, Sung-Wo Han, and Yun-Hyun Cho. "Initial firing angle control of 12-pulse parallel connected thyristor dual converter for urban railway power substations." In 2016 International Symposium on Power Electronics, Electrical Drives, Automation and Motion (SPEEDAM). IEEE, 2016. http://dx.doi.org/10.1109/speedam.2016.7525954.

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Saito, Daisuke, and Shinichi Nomura. "Unity power factor control and harmonic current reduction of thyristor converters using variable series capacitors." In 2013 15th European Conference on Power Electronics and Applications (EPE). IEEE, 2013. http://dx.doi.org/10.1109/epe.2013.6634632.

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Galvis, Eduard, Carlos Andres Torres-Pinzon, Cristian Velandia, and Maximiliano Bueno-Lopez. "Current-sensorless predictive control for DC-DC converters." In 2017 IEEE 3rd Colombian Conference on Automatic Control (CCAC). IEEE, 2017. http://dx.doi.org/10.1109/ccac.2017.8276403.

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Yan, Xingda, Zhan Shu, Suleiman M. Sharkh, and Tongwen Chen. "Output-feedback switching control of DC-DC cuk converters using multiple sampling." In 2015 International Automatic Control Conference (CACS). IEEE, 2015. http://dx.doi.org/10.1109/cacs.2015.7547831.

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Misra, Banishree, and Byamakesh Nayak. "Understanding the control of 12-pulse thyristor converters in VSC-based HVDC system with passive filters." In 2018 Technologies for Smart-City Energy Security and Power (ICSESP). IEEE, 2018. http://dx.doi.org/10.1109/icsesp.2018.8376729.

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Bosich, Daniele, Andrea Vicenzutti, and Giorgio Sulligoi. "Robust voltage control in large multi-converter MVDC power systems on ships using thyristor interface converters." In 2017 IEEE Electric Ship Technologies Symposium (ESTS). IEEE, 2017. http://dx.doi.org/10.1109/ests.2017.8069292.

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