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Title:
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Optimal injection of harmonics in circulating currents of modular multilevel converters for capacitor voltage ripple minimization
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Author:
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Picas Prat, Ricard; Pou Félix, Josep; Ceballos Recio, Salvador; Zaragoza Bertomeu, Jordi; Konstantinou, Georgios; 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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This paper proposes an algorithm to calculate the optimal amplitude and phase of the harmonic current components that can be injected in the circulating currents of a modular multilevel converter (MMC) to minimize the capacitor voltage fluctuations. An optimal second harmonic component and an
optimal set of second and fourth harmonic components are proposed. Simulation results are obtained in MATLAB/Simulink environment to study the effectiveness of the calculated optimal currents. Selected experimental results have been obtained from an MMC laboratory prototype, testing the effects of the circulating currents. The reported results demonstrate the effectiveness of using a fourth harmonic component in the
circulating current, which improves the effect of the second harmonic on reducing the capacitor voltage fluctuations. |
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Subject(s):
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-Àrees temàtiques de la UPC::Energies::Energia elèctrica
-Àrees temàtiques de la UPC::Enginyeria electrònica
-Electric current converters.
-Power electronics.
-Capacitors
-Capacitor voltage fluctuations
-Capacitor voltage ripple
-Circulating current
-Harmonic currents
-MATLAB/Simulink environment
-Modular multi-level converters
-Second and fourth harmonics
-Second harmonic component
-Convertidors altern-continu
-Convertidors
-Condensadors elèctrics
-Condensadors electrònics |
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Rights:
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Document type:
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Article - Published version
Conference Object |
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