Documents disponibles écrits par cet auteur

On-load motor parameter identification using univariate dynamic encoding algorithm for searches / Jong Kwon Kim in IEEE transactions on energy conversion, Vol. 23 n°3 (Septembre 2008) 

Public ISBD [article]  in IEEE transactions on energy conversion > Vol. 23 n°3 (Septembre 2008) . - pp. 804 - 813 Titre : On-load motor parameter identification using univariate dynamic encoding algorithm for searches Type de document : texte imprimé Auteurs : Jong Kwon Kim, Auteur ; Taegyu Kim, Auteur ; Youngsu Park, Auteur Année de publication : 2008 Article en page(s) : pp. 804 - 813 Note générale : Energy conversion Langues : Anglais (eng) Mots-clés : Encoding;  induction  motors;  machine  theory;  optimisation Résumé : Parameter identification of an induction motor has long been studied either for vector control or fault diagnosis. This paper addresses parameter identification of an induction motor under on-load operation. For estimating electrical and mechanical parameters in the motor model from the on-load data, unmeasured initial states and load torque profile have to be also estimated for state evaluation. Since gradient of cost function for the auxiliary variables are hard to be derived, direct optimization methods that rely on computational capability should be employed. In this paper, the univariate dynamic encoding algorithm for searches (uDEAS), recently developed by the authors, is applied to the identification of whole unknown variables with measured voltage, current, and velocity data. Profiles of motor parameters estimated with uDEAS are reasonable, and estimation time is 2 s on average, which is quite fast as compared with other direct optimization methods. En ligne : http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=4560057&sortType%3Das [...] [article] On-load motor parameter identification using univariate dynamic encoding algorithm for searches [texte imprimé] / Jong Kwon Kim, Auteur ; Taegyu Kim, Auteur ; Youngsu Park, Auteur . - 2008 . - pp. 804 - 813. Energy conversion Langues : Anglais (eng) in IEEE transactions on energy conversion > Vol. 23 n°3 (Septembre 2008) . - pp. 804 - 813 Mots-clés : Encoding;  induction  motors;  machine  theory;  optimisation Résumé : Parameter identification of an induction motor has long been studied either for vector control or fault diagnosis. This paper addresses parameter identification of an induction motor under on-load operation. For estimating electrical and mechanical parameters in the motor model from the on-load data, unmeasured initial states and load torque profile have to be also estimated for state evaluation. Since gradient of cost function for the auxiliary variables are hard to be derived, direct optimization methods that rely on computational capability should be employed. In this paper, the univariate dynamic encoding algorithm for searches (uDEAS), recently developed by the authors, is applied to the identification of whole unknown variables with measured voltage, current, and velocity data. Profiles of motor parameters estimated with uDEAS are reasonable, and estimation time is 2 s on average, which is quite fast as compared with other direct optimization methods. En ligne : http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=4560057&sortType%3Das [...]

Performance characteristics of a capacity-modulated linear compressor for home refrigerators / Jong Kwon Kim in International journal of refrigeration, Vol. 36 N° 3 (Mai 2013) 

Public ISBD [article]  in International journal of refrigeration > Vol. 36 N° 3 (Mai 2013) . - pp. 776–785 Titre : Performance characteristics of a capacity-modulated linear compressor for home refrigerators Titre original : Caractéristiques de la performance d'un compresseur linéaire à modulation de puissance pour les réfrigérateurs domestiques Type de document : texte imprimé Auteurs : Jong Kwon Kim, Auteur ; Ji Hwan Jeong, Auteur Année de publication : 2013 Article en page(s) : pp. 776–785 Note générale : Refrigeration Langues : Anglais (eng) Mots-clés : Linear  compressor;  Free  piston;  Household  refrigerator;  Inherent  capacity  modulation;  Refrigerating  system Résumé : A linear compressor requires stroke controllers, as the piston movement is sensitive to the ambient temperature. This paper presents the performance characteristics of an inherent capacity-modulated (ICM) linear compressor. The compressor is capable of modulating its capacity independently without requiring stroke controllers. Electric parameters are designed to deliver inherent capacity modulation in accordance with variations in the cooling demand. An inherent capacity modulation method according to cooling demand levels was proposed and a prototype compressor was constructed. Its performance was evaluated with the cooling capacity ratio varying from 50 to 100% at an evaporating temperature of −26 °C and a condensing temperature of 38 °C. The total efficiency of the ICM linear compressor was as high as that of an electrical resonant system. This shows that the COP difference between the ICM linear compressor and the linear compressor controlled by an electrical resonance system appeared to be less than 1% over a wide cooling capacity ratio range of 50–100%. The results for the conventional linear compressor did not account for the power consumed by the electronic drive, so thus the ICM linear compressor had the potential improvement for energy saving. En ligne : http://www.sciencedirect.com/science/article/pii/S014070071200343X [article] Performance characteristics of a capacity-modulated linear compressor for home refrigerators = Caractéristiques de la performance d'un compresseur linéaire à modulation de puissance pour les réfrigérateurs domestiques [texte imprimé] / Jong Kwon Kim, Auteur ; Ji Hwan Jeong, Auteur . - 2013 . - pp. 776–785. Refrigeration Langues : Anglais (eng) in International journal of refrigeration > Vol. 36 N° 3 (Mai 2013) . - pp. 776–785 Mots-clés : Linear  compressor;  Free  piston;  Household  refrigerator;  Inherent  capacity  modulation;  Refrigerating  system Résumé : A linear compressor requires stroke controllers, as the piston movement is sensitive to the ambient temperature. This paper presents the performance characteristics of an inherent capacity-modulated (ICM) linear compressor. The compressor is capable of modulating its capacity independently without requiring stroke controllers. Electric parameters are designed to deliver inherent capacity modulation in accordance with variations in the cooling demand. An inherent capacity modulation method according to cooling demand levels was proposed and a prototype compressor was constructed. Its performance was evaluated with the cooling capacity ratio varying from 50 to 100% at an evaporating temperature of −26 °C and a condensing temperature of 38 °C. The total efficiency of the ICM linear compressor was as high as that of an electrical resonant system. This shows that the COP difference between the ICM linear compressor and the linear compressor controlled by an electrical resonance system appeared to be less than 1% over a wide cooling capacity ratio range of 50–100%. The results for the conventional linear compressor did not account for the power consumed by the electronic drive, so thus the ICM linear compressor had the potential improvement for energy saving. En ligne : http://www.sciencedirect.com/science/article/pii/S014070071200343X