TECHICAL Series MATHEMATICS • INFORMATICS • PHYSICS Series PHILOLOGY Series ECONOMIC SCIENCES Sereies EDUCATIONAL SCIENCES Series LAW AND SOCIAL SCIENCES Series
Optimal Design of Electromechanical Systems Propeller Fans
(Proiectarea unui ventilator pentru optimizarea sistemelor electromecanice)
Vol LVIII • No. 2bis/2006
Anca Petrişor, Marius Constantin Popescu
University of Craiova
e-mail: mrpopescu@em.ucv.ro

 Keywords    

 Abstract
In this paper it is presented the optimal design problem of an impeller with a view to electromechanical systems optimization. The mathematical model, used for power loss determination in the time unit due to the fluid rotational movement, it is obtained starting from impulse equation [1], [2], [3].
The optimization problem is solved used the calculus of variations method. Finally, the optimal values of the variables which define the impeller are obtained.
In the case of using an induction motor it isn't a big difference between the flow and pressure theoretical values resulted following the optimization process and those are resulted in fact due to an efficient propeller fan drive.

 Rezumat
In lucrare este prezentată problema proiectării optimale a unui ventilator pentru optimizarea sistemelor electromecanice. Modelul matematic utilizat pentru determinarea pierderilor în unitatea de timp, datorită mişcării de rotaţie a fluidului, se obţine pornind de la ecuaţia impulsului [1], [2], [3].
Problema de optimizare se rezolvă folosind metoda de calcul variaţional. In final se obţin valorile optime ale variabilelor care definesc ventilatorul.
În cazul utilizării unui motor de inducţie, nu există deosebiri semnificative între valorile teoretice ale debitului şi presiunii rezultate în urma procesului de optimizare şi cele rezultate de fapt datorită antrenării eficiente a ventilatorului.



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