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All Journal International Journal of Electrical and Computer Engineering Bulletin of Electrical Engineering and Informatics
Ali Dalabeeh
Al-Balqa Applied University
Computer Science & IT Electrical & Electronics Engineering

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Modeling and analysis of energy losses under transient conditions in induction motors Ayman Y. Al-Rawashdeh; Ali Dalabeeh; Ashraf Samarah; Abdallah Ershoud Alzyoud; Khalaf Y. Alzyoud
International Journal of Electrical and Computer Engineering (IJECE) Vol 12, No 4: August 2022
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/ijece.v12i4.pp3388-3395

Abstract

The present study is mainly concerned with solving the problems associated with energy losses resulting from starting transient conditions. In the present study, the possibilities of decreasing starting transient condition energy losses are investigated. Additionally, a comparison of the energy losses using different starting methods is also conducted. In this work, a complete description for deriving the equations used to calculate energy losses, mathematical analysis of the energy losses, the models of the different methods in this work were simulated using MATLAB/Simulink; and the results of energy losses and the dynamic characteristics are provided. Simulation results showed that the minimum starting energy losses were accomplished by soft starting method, in which the starting current could be reduced to the minimum value.
The tooth factor effect on the harmonics of large electrical machines Ayman Y. Al-Rawashdeh; Ali Dalabeeh; Abdallah Al-Zeyod; Ashraf Samarah; Ghazi Qaryouti; Omar Albarbarawi
Bulletin of Electrical Engineering and Informatics Vol 9, No 4: August 2020
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (831.127 KB) | DOI: 10.11591/eei.v9i4.1565

Abstract

In the current study, the general mathematical model for the calculation and analysis of asynchronous systems and transient cases in asynchronous synchronous large electrical machines was developed. The theory of magnetic fields in the teeth's circuits with a smooth surface of the rotor was used and at the same time, high harmonics of magnetic fields and its effect on the transient cases was also calculated. Performance curves were investigated using Matlab codes and evaluated under different values of  factor. The results confirmed the possibility of improving the noise harmonics on the sinusoidal wave form, which is reflected on the machines starting.
Increasing the required slip range of wound induction generator in wind power systems Ali Dalabeeh; Al-Mofleh Anwar; Tariq M. Younes; Ayman Al-Rawashdeh; Ayman Hindi
Bulletin of Electrical Engineering and Informatics Vol 9, No 2: April 2020
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (300.266 KB) | DOI: 10.11591/eei.v9i2.1795

Abstract

Eddy currents losses in the rotor in high power generators do not allow operators, under high values of slip, to regulate voltage and control of reactive power flow. The paper presents a method that can accurately estimate the eddy current losses in electric machines with a less complicated procedure. The suggested method allows researchers to analyze and reduce the losses, and consequently, to improve the wind turbine induction generators efficiencies. The given approach, based on the conventional electric machine theory and the parameters supplied by the manufacturers, predicts the eddy current losses theoretically without the need of the measured material loss data or BH curve. Increasing the range of slip variation of induction motor can be achieved by using a rotor of two layers in the radial direction with different parameters. The first layer is a laminated layer of height (h), and the second is a solid (the rotor yoke). The computation of eddy current losses is useful to change the design of the machine to minimize the losses. This paper presents a detailed modeling of the effect parameters on the eddy current losses in wind turbine induction generator.
Co-Authors Abdallah Al-Zeyod Abdallah Ershoud Alzyoud Al-Mofleh Anwar Ashraf Samarah Ayman Al-Rawashdeh Ayman Hindi Ayman Y. Al-Rawashdeh Ayman Y. Al-Rawashdeh Ghazi Qaryouti Khalaf Y. Alzyoud Omar Albarbarawi Tariq M. Younes