Glassdoor gives you an inside look at what it's like to work at Synchrone, including salaries, reviews, office photos, and more. They are called synchronous generators (or alternators). Some familiarity with (strict or lazy) ML languages and with existing synchronous data-flow languages would be helpful since the language incorpo-rates features from both families. En dernier lieu, un performant modèle d'entraînement à valeurs moyennes, basé sur un onduleur simplifié, est développé. Where the machines are connected to the faulted network by step-up transformers having comparable reactances to the machine subtransient reactances, unsaturated subtransient and transient reactances are used. The magnetic poles can be either salient (sticking out of rotor surface) or non- salient construction. However, saturated reactances are used where the machines are directly connected to the faulted system. In externally fed fields, the source can be a shaft-driven DC generator; several variations to these arrangements exist. Finally, o do not have to be defined in all the states. Mémoire de maîtrise électronique, Montréal, École de technologie supérieure. (Mémoire de maîtrise électronique). Machine Synchrone Alternateur synchrone • Champ tournant • Alternateur : principe de fonctionnement • Structure du rotor (induit) • Structure du stator (inducteur) Cours La machine synchrone triphasée (niveau 2) 332 ko. The modeling of the TPMSM is entirely detailed for the electrical part (states equations, generation of the trapezoïdal back EMF) and for the mechanical part (rotor dynamic and Hall effect sensors ). From: The Electrical Engineering Handbook, 2005, John Hindmarsh BSc (Eng), CEng, MIEE, Alasdair Renfrew BSc, PhD, CEng, MIEE, in Electrical Machines and Drives (Third Edition), 1996. Automatique / Robotique. Tremblay, Olivier des aimants permanents et un champ dit « induit » produit par les courants d'alimentation I. Dans la MCC l'inducteur est au stator et l'induit au rotor : le collecteur commute le courant dans les sections en rotation ; la machine, en fonction de la position de son rotor relativement au champ … Draw the phasor diagram (to scale) for rated operation and a displacement power factor of cosφ = 0.8 lagging (overexcited, generator reference system). Fig. 3.2 Plaque signalétique d’une machine synchrone 49 3.3 Organigramme de conception du MSAP 50 3.4 Calcul et dimensionnement d’un MSAP à rotor externe 52 3.4.1 Cahier des charges 53 3.4.2 Calcul préliminaire 54 3.4.3 Bobinage est différents caractéristiques de l’enroulement 55 Une machine électrique synchrone à réluctance, avec un rotor du ty­pe à segmentation magnétique axiale comprenant des couches axiales (L) de matériau ferromagnétique alternées à des couches intercalaires (I) de matériau non ferromagnétique, dans laquelle des aimants permanents (M) sont insérés dans les couches intercalaires (I), avec une orientation telle à … Diversity & Inclusion are fundamental to our culture, and Synechron is proud to be an equal opportunity workplace and is an affirmative action employer. However, saturated reactances are used where the machines are directly connected to the faulted network. Son rendement est proche de 99%. The reactive power, in a similar way, is obtained as. Figure P4.3. Cette dernière source permet de régler le flux dans l’entrefer. Cylindrical or round rotor synchronous machines have uniform air gap, 2–4 rotor poles with high speed, a rotor that usually has a small diameter but is axially long, and are usually driven by steam turbines. A DC current, creating a magnetic field that must be rotated at synchronous speed, energizes the rotating field winding. A synchronous machine is an AC machine; its rotor rotates with the same speed of rotating field (synchronous speed). Les résultats sont comparés avec succès au logiciel PSIM et au modèle SPS équivalent en mode sinusoïdal. Flavia Khatounian. In 2017, Synechron surveyed our employees across all business lines, geographies, and levels to understand what we value most as individuals and as a company. MONTPELLIER 1095, rue Henri Becquerel 34000 Montpellier 04 48 19 16 07 montpellier@synchrone.fr. Chapitre 7 - Machine synchrone triphasée 295 ko. (MCC), la machine asynchrone (MAS), la machine synchrone (MS) ou la machine à réluctance (MRV) …. New York, NY: John Wiley & Sons; 2004. Lastly, a powerful average value drive model, based on a simplified inverter, is developed using rate limiters dynamics devices acting on the references currents. Figure 19.25. This engineer thesis is egading the stud Ç, the ahie Àement, and the implementation of a platfom Áith it’s specific control system. The real part also represents the per-unit power and the per-unit torque, since losses are being neglected. Description. Commercial schemes are available however which are closely based upon the converter fed synchronous machine drive having additional components to provide VAR compensation. machine synchrone 8 CONVERTIR Activités S I– unité A.D. C Page 51/135 2STE - 2018/2019 The rotor speed is decided by the excitation frequency and the number of poles. In the synchronous machines the rotor has DC excited winding or PMs for establishing excitation field, slip rings, and brushes for external connection. We strongly believe that a diverse workforce helps build stronger, successful businesses as a global company. Contact us. Minimum requirements: MODEL_FIRST_CALC_SYNC.. Deliverables: Thermal Curves for one duty cycle at different parts … The performance penalty on a fast machine appears to be approximately…” 50 + (n * 15) milliseconds. Cours netprof.fr de Electricité / Machines électriquesProf : Julien W Drury BSC, PUD, CEng, FIEE, in Electrical Engineer's Reference Book (Sixteenth Edition), 2003. Electromoteur, Entrainement, Force, Machine, Modelisation, Nasser D. Tleis BSc, MSc, PhD, CEng, FIEE, in Power Systems Modelling and Fault Analysis, 2008, Synchronous machines are represented by a voltage source behind an impedance model where the PPS reactance is time dependent and is given by. When people synchronize their watches, they make sure…. Autrefois utilisés quasi exclusivement en alternateur, le développement de l'électronique de puissance et la généralisation des aimants comme inducteur permettent aujourd'hui d'employer les machines synchrones en tant … The complex power generated is given by. 1.6.7  Resume a Local State. Shape your Future at Synechron. Did You Know? Simulation makes possible the study of their behavior in complete units. Figure 8.16. Following this favorable conclusion, a module is created to trace the torque-speed characteristic according to the parameters entered by the user. Mohammad A.S. Masoum, Ewald F. Fuchs, in Power Quality in Power Systems and Electrical Machines (Second Edition), 2015. 1-1- Rotor; 1-2- Stator; 2- Types de fonctionnement. Generator-transformer interconnection with two displaced stator windings and a Δ/Y -Y/Y transformer. Diversity & Inclusion are fundamental to our culture, and Synechron is proud to be an equal opportunity workplace and is an affirmative action employer. Shape your Future at Synechron. MMF distributions in a 3-phase ac machine: 13. Unlike the Synchronous machine, the induction motor is unable to provide the VARs, or terminal voltage to commutate a converter connected to its terminals. Synchrone interview details: 15 interview questions and 15 interview reviews posted anonymously by Synchrone interview candidates. Principles of electrical machines and power electronics. We provide services with manual or CNC machining, laser engraving, 3D printing, and more for final production. Submit Resume / / EMPLOYEE 2020. By default, when entering in a state, every … It is often better to use a cycloconverter or even an auxiliary synchronous machine to provide the commutation, and motor VARs. Sa caractéristique mécanique se résume à : La vitesse de rotation étant liée à la fréquence d'alimentation, la caractéristique se résume … A synchronous machine is an AC machine; its rotor rotates with the same speed of rotating field (synchronous speed). Summary . A good familiarity with general programming languages is assumed. 5. Présentation Définition et intérêts Définition de l’alternateur Un alternateur synchrone C’est une machine électrique tournante fonctionnant en mode génératrice et produisant de l’énergie électrique alternative Énergie mécanique =⇒ énergie électrique alternative Alternateur triphasé : produit 3 phases (+ un neutre si besoin) Alternateur monophasé : produit … This paper presents a synthesis of control laws based on the theory of Lyapunov for speed control of permanent magnet synchronous machine, … Moyen, Simulation, Synchrone, Trapezoidal, Valeur, Validation. MACHINE SYNCHRONE. Synchronous machines operate by applying a dc excitation to a rotor that, when mechanically rotated, induces a voltage in the armature windings due to changing flux linkage. Specialities of the state machine semantics Modelica state machine: All variables in the state machine are on the same clock — this is in contrast to to the Mode-Automata design paradigms where modes ( states) should behave like clocks. They are called synchronous generators (or alternators). Réponse vibratoire d’origine électromagnétique d’une machine synchrone à aimants permanents par un modèle issu de la résolution analytique des équations de Maxwell June 2013 EFFECTIVE employee management MACHINE SYNCHRONE La charge ne doit pas dépasser l'effort maximal, sinon, le moteur décroche.Les avantages et inconvénients du moteur synchrone sont repris ci-dessous : Avantages Inconvénients • Il peut travailler avec un facteur de puissance proche de 1 (cosφ≈1). Thereafter, the electric drive based on direct current control, a limiting switching frequency device and an automatic calculator of the speed regulator gains are elaborate. For extended fault clearance times, the effect of excitation control systems, and in particular those that have high speed response, may need to be considered. La vitrine de diffusion des mémoires et thèses de l'ÉTS, Mémoire ou thèse Air gap flux due to 3-phase excitation: 12. Today, the simulation of the electric drives is inevitable. Reproduced from Sen PC. Les performances de ce régulateur et de l'entraînement AC7 sont évaluées; les résultats concordent avec ceux attendus. Copyright © 2021 Elsevier B.V. or its licensors or contributors. Vos coordonnées font l’objet d’un traitement destiné à répondre à votre demande et sont exclusivement utilisées par Synchrone à cette fin. Machines à pôles lisses et à pôles saillants; Caractéristique de couple; Fonctionnement en parallèle sur le réseau, synchronisation et diagramme des puissances (topogramme) 6. Small to large scale manufacturing for your project. accueil du site mach.elec site consacré à l'electrotechnique It shows that the Primary replica waits for 10 seconds for a ping response. La machine synchrone est réversible. Magnetic field distributions due to single-phase excitation: 11. 17. 12 : moteur synchrone 3~ modèle équivalent pour une phase V E X S I' G G G 22 • Bilan de puissance du moteur synchrone triphasé 3 U I cos pertes Joule inducteur T … Where 50 ms is a one time setup delay deferred until runtime the first time an asynchronous method encounters an Await operator. : f. [133]-134. Synchronous generators are the primary energy conversion devices and their power ratings can reach from fractional horsepower to several hundred megavolt-amperes (MVAs). Murty, in Power Systems Analysis (Second Edition), 2017. By continuing you agree to the use of cookies. In its simplest form this could comprise capacitors plus appropriate switches. MACHINE SYNCHRONE La charge ne doit pas dépasser l'effort maximal, sinon, le moteur décroche.Les avantages et inconvénients du moteur synchrone sont repris ci-dessous : Avantages Inconvénients • Il peut travailler avec un facteur de puissance proche de 1 (cosφ≈1). Return Value. 8.16. The platform consists of two linear inductions machines connected together. Un modèle dynamique simplifié non linéaire est développé afin de démontrer que le comportement en régime permanent (relation couple - vitesse) de l'entraînement est identique à celui des fiches techniques des manufacturiers. Contribution à la modélisation, l'identification et à la commande d'une interface haptique à un degré de liberté entrainée par une machine synchrone à aimants permanents. This will be achieved by calculating the current from specified voltage, e.m.f., load angle and reactance. Schematic cross-sectional view for a two-pole machine. Indeed, formalism already exists for a various models of machine, as well as for the electric drives. This is the Synchrone company profile. How to use synchronous in a sentence. Submit Resume / / EMPLOYEE 2020. An introduction to Lucid Synchrone This section is a tutorial introduction to Lucid Synchrone. Ces travaux portent sur l'amélioration de la bibliothèque de modèles du module SimPowerSystems (SPS) du logiciel Matlab. ctx.resume ([exception]) Wrapper function should always call this to indicate that all callbacks are done, and that pseudo-thread may continue. The phasor diagram for a salient pole synchronous machine neglecting the resistance is given in Fig. La machine asynchrone a longtemps été fortement concurrencée par la machine synchrone dans les domaines de forte puissance, jusqu'à l'avènement de l'électronique de puissance. From eqn (5.9):V = Ef + jXsIa neglecting resistance;at rated voltage: 1=Ef\δ¯+jIa\φfrom which: Ia\φ=1-Ef\δ¯j=−j(1-Ef\δ¯) per unit. La modélisation de la machine synchrone à aimants permanents à force contre-électromotrice trapézoïdale est entièrement détaillée. Architecture. The next example uses per-unit notation for convenience and is meant to illustrate in a simple manner, the essential aspects of synchronous machine behaviour; conventions, load angle, motoring, generating and synchronous-compensator operation. This needs to be done on your local machine so you can then copy these files to your Azure Function App. 1 per-unit impedance will be rated-voltage-per-phase/rated-current-per-phase and the synchronous reactance is typically of this order, approaching 2 per unit for large turbo generators and rather less than 1 per unit for motors with large overload capacity. A nonlinear simplified dynamic model is developed in order to show that the behavior in steady operation of the drive is identical to the charts of the manufacturers. Synchronous machine definition, an alternating-current machine in which the average speed of normal operation is exactly proportional to the frequency of … Bibliogr. 17. The stator carries the armature winding. The “virtual synchronous machine” (VSM) is a concept related to the idea of “synthetic inertia” that was mentioned in Section 10.1.6. Therefore, the developed models will have to thus respect the structure currently in place. PowerStore is a versatile platform with a performance-centric design that delivers multidimensional scale, always-on data reduction, and support for next-generation media. After you’ve downloaded the client libraries, the DLLs can be found in C:\Program Files (x86)\Microsoft SQL Server\140\SDK\Assemblies. Synchronicity (German: Synchronizität) is a concept, first introduced by analytical psychologist Carl Jung, which holds that events are "meaningful coincidences" if they occur with no causal relationship yet seem to be meaningfully related.. During his career, Jung furnished several different definitions of the term, defining synchronicity as an "acausal connecting … Synchronet BBS Software is a free software package that can turn your personal computer (or computing device, e.g. Now, expressions for the real and reactive powers developed by the synchronous generator will be derived. Dans ce contexte, le recours à une machine synchrone à aimants permanents, reconnue pour satisfaire ces deux critères, semble être approprié. The electric drives are part of systems more complex, integrating at the same time electrical and mechanical components. Ces travaux portent sur l'amélioration de la bibliothèque de modèles du module SimPowerSystems (SPS) du logiciel Matlab. Synchronous speed is the rotating speed of the excitation field. Mohamed Kamel has 9 jobs listed on their profile. The field winding is excited by DC to produce flux in the air gap. Declaration. See the complete profile on LinkedIn and discover Mohamed Kamel’s connections and jobs at similar companies. Machine synchrone. Machine à courant continu. I used the Seeed LoRaWAN Gateway - 868MHz Kit with Raspberry Pi 3 which comes with the Gateway module RHF0M301 – 868. The armature winding is fed through three slip rings and a set of brushes sliding on them. We're always looking for talented, passionate people like you. 4.14.5.3.2.4 Synchronous machine. Login using an external account. Another solutions are possible, whith RPI or not ; it’s difficult to find something less than 300€. La machine synchrone est plus facile à réaliser et plus robuste que le moteur à courant continu. synchrone à aimants permanents et la machine synchrone à rotor bobiné. La machine est représentée sous forme de représentation d'état avec les courants comme variables. Control of such a system is somewhat involved. The diagram somewhat belies the potential complexity of the VAR compensator. For synchronous machines this notation is very commonly used and is perhaps the most straightforward in application, especially for the normal, constant-voltage and constant-frequency arrangement. The entrySet() method is used to get a Set view of the mappings contained in this map.. exception : optional exception to be thrown back to nsynjs-executed code 1- Constitution. We use cookies to help provide and enhance our service and tailor content and ads. In SQL Server Availability groups checks the status of each replica based on a parameter Session-Timeout.By default, its value is 10 seconds. A more modern solution is the so-called brushless design , where the needed power is transferred to the rotor by induction and the rectifying takes place in the rotor itself. 5. The stator core is made of insulated steel laminations to minimize eddy current and hysteresis losses. The rotor is rotated by a prime mover. The model obtained is simulated in generating mode and the results are successfully compared with the software PSIM and the equivalent SPS model in sinusoïdal mode. The solution also gives the power factor, though for a generator this is best detected for lagging or leading by reversing the current phasor, as shown on the phasor diagrams in the next example. The method call returns a set view of the mappings contained in this map. Raspberry Pi) into your own custom online service supporting multiple simultaneous users with hierarchical message and file areas, multi-user chat, and the ever-popular BBS door games.. Synchronet development began as a personal hobby in 1990 … Andrew Dixon BSc, MSc, PhD, CEng, MIET, MIEEE, in Modern Aspects of Power System Frequency Stability and Control, 2019. The performances of this regulator and the drive AC7 are evaluated and the results agree with those awaited. Submit Resume. Synonym Discussion of synchronous. Figure 19.25 shows a basic power circuit. Synchronous definition is - happening, existing, or arising at precisely the same time. paca@synchrone.fr. However, the SimPowerSystems (SPS) toolbox, from Matlab software, can't simulate the machine model and doesn't have a drive allowing control speed. More precisely, the trapezoïdal permanent magnet synchronous machine (TPMSM) requires an electric drive in order to control its revolution. The time constants are affected by the external network between the machine and the point of fault, as discussed in Chapter 7, Short-circuit analysis techniques in large-scale AC power systems. Modeling and Analysis of Synchronous Machines, Power Quality in Power Systems and Electrical Machines (Second Edition), International standards for short-circuit analysis in ac power systems, Power Systems Modelling and Fault Analysis, Electrical Engineer's Reference Book (Sixteenth Edition), Challenges of operating systems with high penetrations of renewables (low-inertia systems), Modern Aspects of Power System Frequency Stability and Control. Synchron is a clinical-stage neurovascular bioelectronics medicine company developing bloodstream-enabled solutions for previously-untreatable nervous system conditions. Note that the escape condition do x = 0 and y = 0 then Up in the initial state is a shortcut for do x = 0 and y = 0 until true then Up.. “Considering the state gymnastics being performed, the Await operator is very efficient. La machine synchrone à réluctance variable est une machine à courant alternatif, elle possède le même type d’enroulements statoriques qu’une machine asynchrone, mais le facteur de puissance est plus faible que celui des autres machines électriques[1]. Synchronous machine. Following is the declaration for java.util.HashMap.entrySet() method.. public Set> entrySet() Parameters. [5]). (8.90) is called the saliency torque as it is due to the difference in the reluctance of pole region and interpole region in the air gap. Machines à pôles lisses et à pôles saillants; Caractéristique de couple; Fonctionnement en parallèle sur le réseau, synchronisation et diagramme des puissances (topogramme) 6. Le modèle de défauts internes dans la machine synchrone est obtenu par l'application de la théorie de la fonction de bobinage pour des défauts au stator. Mots-clefs : Machine linéaire asynchrone, Commande Vectorielle, API, axe maitre/esclave, sustentation magnétique . Machine synchrone à aimant permanent cours Cours moteur synchrone - Cours TechPr . Un procédé de commande d'une machine synchrone (1) à aimants permanents comportant un rotor (4) à aimants permanents et un stator (5) triphasé, la machine (1) étant associée à un onduleur de commande (2) du stator (5) de la machine synchrone (1), et le procédé comprenant : - trois mesures simultanées réalisées par trois capteurs à effet Hall (6a, 6b, 6c) disposés de … École normale supérieure de Cachan - … Synchronous machines are predominantly used in power generation. Machines à Courant Continu Problèmes de Motorisation Variateurs de Vitesse Boucle de Courant Réglage d'un Correcteur PI Asservissement d'une MCC Robot Mobile Commande Vectorielle d'une Machine Synchrone Servomoteurs Robotis Dynamixel +++ Digital disrupts their everyday lives, challenges their technological solutions and revolutionises customer practices: it gradually transforms large organisations into an optimised version of themselves.To reconcile the Business Model, Business needs and user expectations, the digital experience adopted must now be considered as a whole, from end to end. Rated voltage, current and therefore rated kVA are taken as base quantities, plus the constant, synchronous speed. Téléchargements par mois depuis la dernière année. The results and the precision of this average values model are identical to those of the detailed model, even for a step of calculation 25 times larger. The time constants are affected by the external network between the machine and the point of fault, as discussed in Chapter 6. Par la suite, l'entraînement électrique basé sur la commande en courant et un calculateur automatique des gains du régulateur de vitesse sont élaborés. ScienceDirect ® is a registered trademark of Elsevier B.V. ScienceDirect ® is a registered trademark of Elsevier B.V. Electrical Machines and Drives (Third Edition), Modelling of rotating ac synchronous and induction machines, Power Systems Modelling and Fault Analysis (Second Edition). En général, chaque MSAP doit être alimentée par son propre … Learn more. Synchronous machines are predominantly used in power generation. All content is posted anonymously by employees working at Synchrone. Salient pole synchronous machine resistance neglected. Synchronous machines are represented by a voltage source behind an impedance model where the positive-sequence reactance is time-dependent and is given by. Sinusoidally distributed windings and fields in a 3-phase ac machine: 10. P.S.R. The armature, normally containing a three-phase winding, is mounted on the shaft. (2006). The rotating field winding can be energized through a set of slip rings and brushes. The number of poles in an electric machine is always an even number. Machine à courant continu. Synchronous machines with two by 30° displaced stator windings (winding #1 and winding #2) are used to improve the voltage/current wave shapes so that the output voltages of a generator become more sinusoidal. For a S = 1200 MVA, VL-L = 24 kV, f = 60 Hz, p = 2 turbogenerator the machine parameters are in per unit (pu): Xd = 1.05, X12d = 0.80, Xq = 0.95, X12q = 0.73, Xffd = 2.10, ko = 0.5, k1 = 0.638, r = Ra = 0.00146, rf = Rf = 0.0007. Modeling, simulation and control of the permanent magnet synchronous machine with trapezoïdal back EMF. Where the machines are connected to the faulted network by step-up transformers having comparable reactances to the machine subtransient reactances, unsaturated subtransient and transient reactances are used. La machine asynchrone a longtemps été fortement concurrencée par la machine synchrone dans les domaines de forte puissance, jusqu'à l'avènement de l'électronique de puissance. Excellents simulation results, for each worked out model, confirm the validity and the rigor of the used approach. Submit Resume. Cours de 10 pages en physique : La machine synchrone : description, utilisation, etc.. Ce document a été mis à jour le 27/04/2015 ---ce site est créer par Omar SAGHOUGH Technicien spécialisé en Electromécanique des systems automatisés en assistance de Mr CHAMALI Mohamed.--- Synchronous machines are often classified into two groups according to the rotor configuration: cylindrical rotor and salient pole. Les résultats et la précision de ce modèle sont identiques à ceux du modèle détaillé, même pour un pas de calcul 25 fois plus grand. Content: Thermal Behavior of the machine facing a duty cycle (either torque or speed duty cycle) is computed.Curves of the values of the temperatures at different parts of the machine are determined. A motor convention will be used and the synchronous reactance Xs assumed to be 1 per unit. Machine synchrone. Synchronous generators are the primary … When the rotor rotates, voltage is induced in the armature winding placed on the stator. ... Write a Resume … This system is only appropriate for high power drives, generally above 4 MW where an induction motor is preferred. This is similar to the employment of 12-pulse rectifiers versus 6-pulse rectifiers. Thus, those works concern the improvement of the already existing library of models. Réponse vibratoire d’origine électromagnétique d’une machine synchrone à aimants permanents par un modèle issu de la résolution analytique des équations de Maxwell June 2013 View Mohamed Kamel Bouzekria’s profile on LinkedIn, the world’s largest professional community. Système multi-machine synchrone à aimants Afin de contrôler une MSAP, un onduleur doit être utilisé pour convertir une tension continue en un système de tensions triphasées sinusoïdales. Résumé. Schematic cross-sectional view for a two-pole synchronous machine is shown in Fig. Synchrone interview details: ... à savoir si vous êtes une machine capable de prospecter sans répits et faire des heures supplémentaires sinon dans le cas contraire c'est byebye. NA. Aimant, Commande, Contre, Contre-Electromoteur, Courant, Rotors are made laminated to reduce eddy current losses. (8.90) and (8.91) will reduce to, Nasser Tleis BSc (Hons), MSc, PhD, CEng, FIET, M-CIGRE, in Power Systems Modelling and Fault Analysis (Second Edition), 2019, Synchronous machine behaviour under short-circuit faults and modelling in the sequence reference frame 386, Synchronous machine sequence equivalent circuits 386, Unbalanced two-phase (phase-to-phase) short-circuit faults 398, Unbalanced single-phase to earth short-circuit faults 403, Unbalanced two-phase to earth short-circuit faults 407, Modelling the effect of initial machine loading 412, Effect of automatic voltage regulators on short-circuit currents 414, Modelling of synchronous motors/compensators/condensers 417, Ahmet Cansiz, in Comprehensive Energy Systems, 2018.
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