Title :
Energy efficiency and performance considerations of variable frequency drives for air-cooled heat exchangers
Author :
Endrejat, Frieder ; Van Niekirk, H.R. ; Delport, G. Johan
Author_Institution :
Dept. of Electr. & Electron. Eng., Pretoria Univ., South Africa
Abstract :
The optimal operation of variable frequency drives (VFDs) are described for application on air-cooled heat exchangers (ACHEs) with multiple induction motors. The optimal excitation control of the motors is indicated for the desired airflow production. The effect of the variable airflow on the heat transfer performance of the ACHE is indicated. The effect and importance of different operating configurations of the motors are indicated
Keywords :
cooling; heat exchangers; induction motor drives; machine control; optimal control; variable speed drives; air-cooled heat exchangers; airflow production; energy efficiency; heat transfer performance; motor operating configurations; multiple induction motors; optimal excitation control; optimal operation; performance considerations; variable airflow; variable frequency drives; Core loss; Electric variables control; Energy efficiency; Fluid flow control; Frequency; Hysteresis motors; Induction motors; Mechanical variables control; Resistors; Temperature control;
Conference_Titel :
Industrial Electronics, 1998. Proceedings. ISIE '98. IEEE International Symposium on
Conference_Location :
Pretoria
Print_ISBN :
0-7803-4756-0
DOI :
10.1109/ISIE.1998.707798
