Exploració per autor "Ghias, Amer M.Y.M."
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Analysis of a voltage balancing technique with reduced switching transitions in a flying capacitor multilevel converter
Ghias, Amer M.Y.M.; Pou Félix, Josep; Agelidis, Vassilios; Ciobotaru, M. (2013)
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Accés obertThis paper reports the analysis of a voltage balancing technique based on optimal switching transitions for a flying capacitor (FC) multilevel converter using phase disposition pulse-width modulation. Since multiple switching ... -
Dynamic behaviour of a back-to-back five-level flying capacitor converter with reduced DC bus capacitance
Ghias, Amer M.Y.M.; Ciobotaru, M.; Agelidis, Vassilios; Pou Félix, Josep (2012)
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Accés restringit per política de l'editorialDue to extensive research, advanced voltage source converter (VSC) such as multilevel and multi-module have been proposed for high power applications. These advanced VSCs must provide secure as well as, intelligent power ... -
Initial capacitor charging in grid-connected flying capacitor multilevel converters
Ghias, Amer M.Y.M.; Pou Félix, Josep; Agelidis, Vassilios; Ciobotaru, Mihai (2014-07-01)
Article
Accés restringit per política de l'editorialThis letter reports a method for the initial charging of capacitors in grid-connected flying capacitor (FC) multilevel converters. A resistor is inserted between each phase of the FC converter and the grid. A voltage ... -
On improving phase-shifted PWM for flying capacitor multilevel converters
Ghias, Amer M.Y.M.; Pou Félix, Josep; Capellá Frau, Gabriel José; Acuna, Pablo; Agelidis, Vassilios (2016-08-01)
Article
Accés restringit per política de l'editorialThis letter proposes a phase-shifted pulse-width modulation (PS-PWM) technique for the flying capacitor (FC) multilevel converter that improves the quality of the line-to-line voltages. In traditional PS-PWM, the line-to-line ... -
Optimum state voltage balancing method for stacked multicell converters
Ghias, Amer M.Y.M.; Pou Félix, Josep; Agelidis, Vassilios; Ciobotaru, Mihai (2013)
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Accés obertThis paper presents a voltage balancing method for stacked multicell converters based on phase disposition pulse-width modulation. This method is based on minimizing a cost function to determine the optimum redundant state ... -
Performance evaluation of a five-level flying capacitor converter with reduced DC bus capacitance under two different modulation schemes
Ghias, Amer M.Y.M.; Pou Félix, Josep; Ciobotaru, M.; Agelidis, Vassilios (2012)
Text en actes de congrés
Accés restringit per política de l'editorialIn flying capacitor (FC) converters, phase-shifted pulse-width modulation (PS-PWM) provides natural voltage balancing. However, for a practical application, a more robust balancing mechanism of maintaining the FC voltages ... -
Single-carrier phase-disposition PWM implementation for multilevel flying capacitor converters
Ghias, Amer M.Y.M.; Pou Félix, Josep; Capellá Frau, Gabriel José; Agelidis, Vassilios; Aguilera, Ricardo P; Meynard, Thierry A. (2015-10-01)
Article
Accés obertThis letter proposes a new implementation of phase-disposition pulse-width modulation (PD-PWM) for multilevel flying capacitor (FC) converters using a single triangular carrier. The proposed implementation is much simpler ... -
Solid State Transformer Based on the Flying Capacitor Multilevel Converter for Intelligent Power Management
Ghias, Amer M.Y.M.; Ciobotaru, M.; Agelidis, Vassilios; Pou Félix, Josep (IEEEXPLORE, 2012)
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Accés restringit per política de l'editorialFuture grids will consist of large scale of integration of both renewable and other distributed energy sources. Therefore, advanced power electronics converters for critical loads will be needed in order to enhance power ... -
Voltage balancing method for a seven-level stacked multicell converter using minimum-switching transitions
Ghias, Amer M.Y.M.; Pou Félix, Josep; Agelidis, Vassilios; Ciobotaru, Mihai (2013)
Text en actes de congrés
Accés obertThis paper presents a voltage balancing method for stacked multicell converters based on phase disposition pulse-width modulation. This method is based on minimizing a cost function to determine the optimum redundant state ... -
Voltage balancing method for the multilevel flying capacitor converter using phase-shifted PWM
Ghias, Amer M.Y.M.; Pou Félix, Josep; Ciobotaru, M.; Agelidis, Vassilios (2012)
Text en actes de congrés
Accés restringit per política de l'editorialn flying capacitor (FC) converters, phase-shifted pulse-width modulation (PS-PWM) provides natural voltage balancing. However, for a practical application, a more robust balancing mechanism of maintaining the FC voltages ... -
Voltage balancing method using phase-shifted PWM for stacked multicell converters
Ghias, Amer M.Y.M.; Pou Félix, Josep; Agelidis, Vassilios; Ciobotaru, Mihai (2013)
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Accés obertThis paper proposes an active voltage balancing method for stacked multicell converters (SMC) using phase-shifted pulse-width modulation, which is easy to implement and extend to high number of levels. The proposed method ... -
Voltage balancing of a five-level flying capacitor converter using optimum switching transitions
Ghias, Amer M.Y.M.; Pou Félix, Josep; Ciobotaru, M.; Agelidis, Vassilios (2012)
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Accés obertThe flying capacitor (FC) multilevel converter requires a capacitor voltage balancing mechanism for proper operation. This paper proposes a voltage balancing scheme for a five-level FC converter based on phase disposition ... -
Voltage balancing scheme for the multilevel flying capacitor converter using phase-shifted PWM
Ghias, Amer M.Y.M.; Pou Félix, Josep; Ciobotaru, M.; Agelidis, Vassilios (2012)
Text en actes de congrés
Accés obertIn flying capacitor (FC) converters, phase-shifted pulse-width modulation (PS-PWM) provides natural voltage balancing. However, for a practical application, a more robust balancing mechanism of maintaining the FC voltages ... -
Voltage balancing strategy for a five-level flying capacitor converter using phase disposition PWM with sawtooth-shaped arriers
Ghias, Amer M.Y.M.; Pou Félix, Josep; Ciobotaru, M.; Agelidis, Vassilios (2012)
Text en actes de congrés
Accés obertThe flying capacitor (FC) multilevel converter has attracted a great deal of interest in the recent years because of its easier extension to a higher number of levels (n>;3), as compared to its counterpart, the diode-clamped ... -
Voltage-balancing method using phase-shifted PWM for the flying capacitor multilevel converter
Ghias, Amer M.Y.M.; Pou Félix, Josep; Ciobotaru, Mihai; Agelidis, Vassilios (2014-09)
Article
Accés restringit per política de l'editorialMultilevel flying capacitor (FC) converters provide natural capacitor voltage balance under phase-shifted pulse width modulation (PS-PWM). However, natural balancing may not be robust enough to maintain the voltages at the ...