Approach to measure the degree of the unbalanced power in induction motor for energy‐efficient use. Issue 8 (16th August 2017)

• Record Type: Journal Article
• Authors: El‐Kharashi, Eyhab; Girgis Massoud, Joseph
• Is Part Of: Journal of engineering. Volume 2017:Issue 8(2017)
• Page Start: 452
• Page End: 465
• Publication Date: 2017-08-16
• Subjects: rotors (mechanical) -- stators -- energy conservation -- induction motors; energy efficiency -- rotor -- stator -- rotor speed -- electromagnetic torque -- machine performance -- reactive PUF -- MATLAB/Simulink -- power factor -- copper losses -- motor performance -- power unbalance factors -- energy‐efficient use -- induction motor; Engineering -- Periodicals; Engineering; Electronic journals; Periodicals; 620.005
• DOI: 10.1049/joe.2017.0155
• Languages: English
• ISSNs: 2051-3305

Abstract

Abstract : This study utilises the power unbalance factors (PUFs) to determine the output precisely of the induction motor (IM) subjected to unbalanced supply voltage, and use them to analyse motor performance [i.e. copper losses, motor efficiency, power factor, input active and reactive powers, electromagnetic torque and derating factor (DF)]. The analysis of IM is applied using the approach of symmetrical component. Furthermore, MATLAB/Simulink is used to examine the behaviour of IM during balanced and unbalanced operations. Results illustrate that the reactive PUF ( K Q ) provides accurate assessment for the machine performance. Three cases of the unbalanced condition were selected to provide various scenarios, which may IM subjected to them. The influence of cases on electromagnetic torque, rotor speed, stator and rotor current, active and reactive input powers has been investigated. DF is investigated and tuned to improve energy efficiency during unbalanced operations.