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Comparison of different controllers for variable speed compressor and electronic expansion valve / Orhan Ekren in International journal of refrigeration, Vol. 33 N° 6 (Septembre 2010) 

Public ISBD [article]  in International journal of refrigeration > Vol. 33 N° 6 (Septembre 2010) . - pp. 1161-1168 Titre : Comparison of different controllers for variable speed compressor and electronic expansion valve Titre original : Comparaison de plusieurs régulateurs de la vitesse variable du compresseur et du détendeur électronique Type de document : texte imprimé Auteurs : Orhan Ekren, Auteur ; Savas Sahin, Auteur ; Yalcin Isler, Auteur Année de publication : 2010 Article en page(s) : pp. 1161-1168 Note générale : Génie Mécanique Langues : Anglais (eng) Mots-clés : Refrigeration  system  Cooling-scroll  compressor  Electronic  expansion  valve-comparison  Control  Variable  speed  Fuzzy  logic  Neural  network Index. décimale : 621.5 Energie pneumatique. Machinerie et outils. Réfrigération Résumé : This study deals with effects of different control methods on variable speed compressor (VSC) and electronic expansion valve (EEV) in a chiller system. The chiller system has a scroll type VSC and a stepper motor controlled EEV. Two different procedures were applied to control EEV and VSC: controlling each part individually while the other was set to a constant value and controlling both parts together using the same algorithm. Three different control algorithms such as proportional, integral, differential (PID), fuzzy logic and Artificial Neural Network (ANN) were experimented. In the first case, PID controller presented reasonable control solution for more stable SH and Two values in the steady state. In the second case, ANN controller pair was selected to achieve minimum power consumption and more stable SH and Two values against to a disturbance. In this manner, ANN controller showed lower power consumption of 8.1 percent and 6.6 percent than both PID and Fuzzy controllers, respectively. DEWEY : 621.5 ISSN : 0140-7007 En ligne : http://www.sciencedirect.com/science/article/pii/S0140700710000915 [article] Comparison of different controllers for variable speed compressor and electronic expansion valve = Comparaison de plusieurs régulateurs de la vitesse variable du compresseur et du détendeur électronique [texte imprimé] / Orhan Ekren, Auteur ; Savas Sahin, Auteur ; Yalcin Isler, Auteur . - 2010 . - pp. 1161-1168. Génie Mécanique Langues : Anglais (eng) in International journal of refrigeration > Vol. 33 N° 6 (Septembre 2010) . - pp. 1161-1168 Mots-clés : Refrigeration  system  Cooling-scroll  compressor  Electronic  expansion  valve-comparison  Control  Variable  speed  Fuzzy  logic  Neural  network Index. décimale : 621.5 Energie pneumatique. Machinerie et outils. Réfrigération Résumé : This study deals with effects of different control methods on variable speed compressor (VSC) and electronic expansion valve (EEV) in a chiller system. The chiller system has a scroll type VSC and a stepper motor controlled EEV. Two different procedures were applied to control EEV and VSC: controlling each part individually while the other was set to a constant value and controlling both parts together using the same algorithm. Three different control algorithms such as proportional, integral, differential (PID), fuzzy logic and Artificial Neural Network (ANN) were experimented. In the first case, PID controller presented reasonable control solution for more stable SH and Two values in the steady state. In the second case, ANN controller pair was selected to achieve minimum power consumption and more stable SH and Two values against to a disturbance. In this manner, ANN controller showed lower power consumption of 8.1 percent and 6.6 percent than both PID and Fuzzy controllers, respectively. DEWEY : 621.5 ISSN : 0140-7007 En ligne : http://www.sciencedirect.com/science/article/pii/S0140700710000915