Approach to measure the degree of the unbalanced power in induction motor for energy-efficient use

The Journal of Engineering

Joseph Girgis Massoud¹  Eyhab El-Kharashi³ 

[1] Machines Department, Ain Shams University, 1st El-Sarayat Street, Abdou Basha Square, Abbassia, 11517 Cairo, Egypt;Egyptian Electricity Holding Company (EEHC), Ramsis Street, Abbassia, P.O. Box 11517 Cairo, Egypt;Faculty of Engineering, Electrical Power &

关键词: reactive PUF;    machine performance;    MATLAB/Simulink;    motor performance;    power unbalance factors;    power factor;    rotor;    stator;    energy efficiency;    copper losses;    induction motor;    electromagnetic torque;    rotor speed;    energy-efficient use;   

DOI  :  10.1049/joe.2017.0155

学科分类：工程和技术（综合）

来源: IET

【 摘 要 】

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.

【 授权许可】

CC BY