Browsing by Author "Morsy, A. S."
Now showing items 1-6 of 6
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An active damping technique for a current source inverter employing a virtual negative inductance
Morsy, A. S.; Ahmed, S.; Enjeti, P.; Massoud, Ahmed (2010 , Conference Paper)A grid connected CSI requires a CL filter stage. In this work, the isolation transformer leakage inductance constitutes this filter inductance. This CL filter is lightly damped for efficiency constraints. Hence, it is ... -
Harmonic rejection using multi-synchronous reference frame technique for CSI-based distributed generation with grid voltage distortion
Morsy, A. S.; Tawfeek, M.; Lotfy, A.; Ahmed, S.; Massoud, Ahmed ( IEEE , 2011 , Conference Paper)In the midst of the growing penetration of renewable energy resources and Distributed Generation (DG), power quality is one of the main concerns. Achieving low total harmonic distortion (THD) of exported current using low ... -
Open loop V/f control of multiphase induction machine under open-circuit phase faults
Morsy, A. S.; Abdelkhalik, A. S.; Abbas, A.; Ahmed, S.; Massoud, Ahmed ( IEEE , 2013 , Conference Paper)One of the main advantages of multiphase induction machines is their higher fault-tolerant capability. Under phase(s) loss, the machine currents can be optimally controlled to satisfy certain optimization criteria. In this ... -
Phase locked loop with fast tracking over wide stability range under grid faults
Morsy, A. S.; Enjeti, P.; Ahmed, S.; Massoud, Ahmed ( Institute of Electrical and Electronics Engineers Inc. , 2014 , Conference Paper)This paper introduces a PLL characterized by fast dynamics, wide stability range and minimal deviations. The proposed PLL is based on a frequency adaptive filtering stage to minimize the frequency and phase deviations under ... -
Sensorless field oriented control of five-phase induction machine under open-circuit phase faults
Morsy, A.S.; Abdel-Khalik, A.S.; Ahmed, S.; Massoud, Ahmed ( IEEE , 2013 , Conference Paper)Recently, multiphase machine is promoted to replace three-phase drives in high power safety-critical applications. Among the numerous advantages of multiphase induction machine drives, operation and self-starting under ... -
Sensorless V/f control with MRAS speed estimator for a five-phase induction machine under open-circuit phase faults
Morsy, A.S.; Abdel-Khalik, A.S.; Ahmed, S.; Massoud, Ahmed ( IEEE , 2013 , Conference Paper)This paper introduces a sensorless scalar controller with MRAS speed estimator based on simple Proportional Resonant PR controllers to provide a disturbance-free operation to a five-phase induction machine under phase open ...