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Steady State Analysis of an Isolated Self-Excited Dual Three-Phase Induction Generator for Renewable Energy

International Journal of Modern Nonlinear Theory and Application 2014年第5期3卷 191-198页

作者： mohamed arbi khlifi Badr M. Alshammari College of Engineering Hail University Hail KSA

In this paper modelling and analysis in autonomous mode of dual three-phase induction generator (DTPIG) with a new algorithm have been done. We develop the steady state model of a dual three-phase self-excited induction generator for stand-alone renewable generation dispensing with the segregating real and imaginary components of the complex impedance of the induction generator. The obtained admittance yields the adequate magnetizing reactance and the frequency. These two key parameters are then used to compute the self-excitation process requirements in terms of the prime mover speed, the capacitance and the load impedance on the one hand and to predict the generator steady state performance parameters on the other. Steady state performances and characteristics of different configurations are clearly examined and compared. The analytical results are found to be in good agreement with experimental results.

关键词： Dual Stator Windings Asynchronous Generator Autonomous Mode Steady State Analysis Renewable Electric Energy Generation

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Embryonal Rhabdomyosarcoma of the Uterine Cervix: Two Cases Report and Literature Review

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Open Journal of Obstetrics and Gynecology 2014年第14期4卷 868-873页

作者： khlifi Abdeljalil Boukadida Asma Mouna Kouira Hachani Faten Meddeb Sawssen Hidar Samir Bibi mohamed Essaidi Habib Khairi Hedi Department of Gynecology and Obstetrics University Teaching Hospital Farhat Hached Sousse Tunisia

Introduction:?Embryonal rhabdomyosarcoma (RMS) of the uterine cervix is a rare and extremely aggressive malignant entity. However, prognosis seems to be improved with the use of multimodality approach treatment. Cases: We report the cases of 50- and 51-year-old women, presenting with vaginal bleeding and mass. The two patients underwent radical surgery. Histological examination revealed RMS of uterine cervix. Treatment was effective in the first case but despite the chemotherapy, the second patient died two months later. Discussion and Conclusions: The prognosis of the cervical embryonal RMS depends on clinical and histological features. The current treatment protocols are based on trials done on pediatric patients. Studies on embryonal RMS treatment and outcomes are limited in women over forty years. In patients with unfavorable prognosis characteristics, the multimodality approach including surgery, adjuvant chemo and radiotherapy can be effective. Otherwise, surgery alone can effectively be proposed.

关键词： Embryonal Rhabdomyosarcoma Uterine Cervix Radiation Therapy Chemotherapy Surgery

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