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ABSTRACT: The cross-flow water turbine generation system is, as any distributed grid connected generator, sensitive to all kind of power grid disturbances. The goal of this paper is to show how this system, by the means of its controls, is able to reject polluting harmonics. The fault ride through following voltage gaps is also proven. Experimental results obtained with a hybrid real-time test rig validate the correct operation of this system under grid disturbances.
PowerTech, 2009 IEEE Bucharest; 08/2009
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ABSTRACT: A study of the stand-alone mode of operation for cross-flow-water-turbine-based generation systems is presented in this paper. This system is considered to feed a mainly resistive load via a power electronics interface which allows the use of advanced integrated controls. It should guarantee the imposed voltage parameters in the absence of energy storage elements. Experimental tests have been performed in order to validate the control loop responses and the operating strategy of the turbines.
Industrial Technology, 2009. ICIT 2009. IEEE International Conference on; 03/2009
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ABSTRACT: This paper deals with the up-to-date issue of renewable energy production systems. For their exploitation these systems need advanced integrated controls that include power electronics facilities. A study of a micro- hydro water turbine based energy production system is presented. This study is oriented on controlling the micro- hydro generation system in grid-connected and in islanded operation. For each of this two operation modes, the roles of power electronics converters have been assigned and control structures have been proposed. Simulations and experimental tests have been realized to verify the feasibility of the system and the response of the control loops.
Power Electronics Specialists Conference, 2008. PESC 2008. IEEE; 07/2008
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ABSTRACT: Résumé -L'étude de l'intégration d'une chaîne de production à base d'hydrolienne est présentée dans cet article. Une turbine hydrolienne à axe vertical est considérée. Le système est d'abord modélisé, puis des contrôles commandés sont synthétisés pour d'une part, assurer classiquement la poursuite du maximum de puissance, puis dans un second temps, d'injecter au réseau des formes d'onde propres. La partie expérimentale est conçue de manière à corroborer les attentes de la théorie: la turbine est émulée à l'aide d'une machine à courant continu commandée en courant. Une génératrice synchrone à aimants permanents est ainsi entraînée. La connexion au réseau électrique est faite via deux onduleurs triphasées têtes bêche. Les résultats expérimentaux obtenus vérifient bien la théorie. Abstract -The study of the integration of a production line based hydrolian is presented in this article. A vertical axis hydrolian turbine is considered. The system is modelled first, then control orders are synthesized for a classically ensure the continuation of the maximum power, then in a second time to inject own network waveforms. The experimental part is designed to corroborate expectations theory: the turbine is emulated by using a machine controlled DC current. A permanent magnet synchronous generator is so driven. The electrical grid connection is made through two three-phase UPS heads spade. The experimental results obtained verify the theory well. Mots clés: Hydrolienne -Axe vertical -Injection au réseau -Machine CC -MPPT.
01/2008; 11:4-493.
