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Studies on the heating capacity control of a multi-type heat pump system applying a multi-input multi-output (MIMO) method in Revue internationale du froid, vol 34, issue 2 (mars 2011)
[article]
Titre : Studies on the heating capacity control of a multi-type heat pump system applying a multi-input multi-output (MIMO) method Titre original : Etudes sur la régulation de la puissance thermique d'un système à pompe à chaleur de type multiple employant une méthode comportant plusieurs grandeurs d'entrée et de sortie Type de document : texte imprimé Année de publication : 2012 Article en page(s) : pp. 416-428 Langues : Anglais (eng) Français (fre) Catégories : 621.5 : Technique pneumatique, du vide, des basses températures Mots-clés : Régulation de la puissance; Grandeurs d'entrée; Grandeurs de sortie; Pompe à chaleur; Système; Régulation; Variable; Intégral Index. décimale : 621.56 Technique des basses températures : réfrigération, pompe à chaleur Résumé : This paper describes a method to control capacity of a multi-type heat pump system. Because indoor units are interconnected, alteration of the heating or cooling setting of one indoor unit can influence the performance of the other indoor units. Proportional-integral (PI) controllers were used to assess system performance, and the PI controllers’ gain values were optimized by using a genetic algorithm. A system model was established following a system identification optimization process, and a pseudo random binary sequence was selected as the system identification input signal. A multi-input multi-output (MIMO) controller was more effective in reducing such cross-coupling effects than a single-input single-output (SISO) controller. The temperature at the secondary fluid outlet in the condenser and the saturation pressure at the evaporator were selected as the control variables in the MIMO controller. The experimental results showed that an optimized MIMO controller could reduce overshoot by up to 40% compared with the results using a SISO controller.
in Revue internationale du froid > vol 34, issue 2 (mars 2011) . - pp. 416-428[article] Studies on the heating capacity control of a multi-type heat pump system applying a multi-input multi-output (MIMO) method = Etudes sur la régulation de la puissance thermique d'un système à pompe à chaleur de type multiple employant une méthode comportant plusieurs grandeurs d'entrée et de sortie [texte imprimé] . - 2012 . - pp. 416-428.
Langues : Anglais (eng) Français (fre)
in Revue internationale du froid > vol 34, issue 2 (mars 2011) . - pp. 416-428
Catégories : 621.5 : Technique pneumatique, du vide, des basses températures Mots-clés : Régulation de la puissance; Grandeurs d'entrée; Grandeurs de sortie; Pompe à chaleur; Système; Régulation; Variable; Intégral Index. décimale : 621.56 Technique des basses températures : réfrigération, pompe à chaleur Résumé : This paper describes a method to control capacity of a multi-type heat pump system. Because indoor units are interconnected, alteration of the heating or cooling setting of one indoor unit can influence the performance of the other indoor units. Proportional-integral (PI) controllers were used to assess system performance, and the PI controllers’ gain values were optimized by using a genetic algorithm. A system model was established following a system identification optimization process, and a pseudo random binary sequence was selected as the system identification input signal. A multi-input multi-output (MIMO) controller was more effective in reducing such cross-coupling effects than a single-input single-output (SISO) controller. The temperature at the secondary fluid outlet in the condenser and the saturation pressure at the evaporator were selected as the control variables in the MIMO controller. The experimental results showed that an optimized MIMO controller could reduce overshoot by up to 40% compared with the results using a SISO controller.