Ghoneam, S., Abdel-Rahman, S., El–Gazzar,, D. (2011). VIBRATION ANALYSIS OF CENTRIFUGAL PUMP WITH VARIABLE SPEED DRIVES. JES. Journal of Engineering Sciences, 39(No 3), 565-579. doi: 10.21608/jesaun.2011.127663
Sobhy, M. Ghoneam; Samir, M. Abdel-Rahman; Dalia, M. El–Gazzar,. "VIBRATION ANALYSIS OF CENTRIFUGAL PUMP WITH VARIABLE SPEED DRIVES". JES. Journal of Engineering Sciences, 39, No 3, 2011, 565-579. doi: 10.21608/jesaun.2011.127663
Ghoneam, S., Abdel-Rahman, S., El–Gazzar,, D. (2011). 'VIBRATION ANALYSIS OF CENTRIFUGAL PUMP WITH VARIABLE SPEED DRIVES', JES. Journal of Engineering Sciences, 39(No 3), pp. 565-579. doi: 10.21608/jesaun.2011.127663
Ghoneam, S., Abdel-Rahman, S., El–Gazzar,, D. VIBRATION ANALYSIS OF CENTRIFUGAL PUMP WITH VARIABLE SPEED DRIVES. JES. Journal of Engineering Sciences, 2011; 39(No 3): 565-579. doi: 10.21608/jesaun.2011.127663
VIBRATION ANALYSIS OF CENTRIFUGAL PUMP WITH VARIABLE SPEED DRIVES
1Professor, Department of Production & Design Engineering, Faculty of Engineering, Menoufia University,
2Associate Professor, Mechanical & Electrical Research Institute, National Water Research Center
3Researcher Assistant, Mechanical & Electrical Research Institute, National Water Research Center,
Abstract
Variable speed drives (VSD) improve operation and performance of pumping system and allowing them to operate efficiently, match fluctuations in the water demand and hence saving energy over the required range of field operation. Variation of speed may considerably lead to coinciding of stationary speed with the critical speed. For VSD applications, the excitation frequencies become variable and the likelihood of encountering a resonance condition within the continuous operating speed range is greatly increased. Vibration tests were done to obtain the optimum Dynamic performance and its sensitivity due to speed variation. The present work was done on a test rig of a centrifugal pump unit with a variable speed drive. Forced vibration measurements were done at different operating speed ranged from 25 Hz to 50 Hz to determine vibration levels and exciting frequencies. Experimental modal testing was done at different conditions to simulate the design and installation cases. Operational modal analysis is done to simulate the actual operating conditions. Dangerous frequencies are well determined to avoid operation at resonance. Finite element model was done using ANSYS software to obtain the dynamic characteristics of the pump model analytically.
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