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Title:
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Performance evaluation of a five-level flying capacitor converter with reduced DC bus capacitance under two different modulation schemes
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Author:
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Ghias, Amer M.Y.M.; Pou Félix, Josep; Ciobotaru, M.; Agelidis, Vassilios
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Other authors:
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Universitat Politècnica de Catalunya. Departament d'Enginyeria Electrònica; Universitat Politècnica de Catalunya. TIEG - Terrassa Industrial Electronics Group |
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Abstract:
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In 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 at the
desired values is required. This paper proposes a new closed-loop
voltage balancing method for multilevel FC converters using PSPWM.
The proposed method balances the voltages of the FCs by
modifying the duty cycle of each switch of the FC converter using
a proportional (P) controller. The crossed effect between FC
currents and duty cycles is considered and is used for FC voltage
balancing. The Simulation results verify that the proposed
voltage balancing method is very robust to different operating
conditions, such as load transients and non-linear loads. |
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Abstract:
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Peer Reviewed |
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Subject(s):
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-Àrees temàtiques de la UPC::Enginyeria electrònica::Electrònica de potència
-Electric current converters
-Modulation (Electronics)
-Electronic control
-AC/DC converters
-Back-to-back system
-DC/AC converters
-FC multilevel converters
-PD-PWM
-PS-PWM
-Reduced DC-link capacitor
-Voltage balancing strategy
-Convertidors de corrent elèctric
-Modulació (Electrònica)
-Control electrònic |
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Rights:
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Document type:
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Article - Published version
Conference Object |
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