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Title:
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Energy-balance control of PV cascaded multilevel grid-connected inverters for phase-shifted and level-shifted pulse-width modulations
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Author:
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Chavarría Roé, Javier; Biel Solé, Domingo; Guinjoan Gispert, Francisco; Meza Benavides, Carlos; Negroni Vera, Juan José
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Other authors:
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Universitat Politècnica de Catalunya. Departament d'Enginyeria Electrònica; Universitat Politècnica de Catalunya. EPIC - Energy Processing and Integrated Circuits |
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Abstract:
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This paper presents an energy-balance control strategy for a cascaded single-phase grid-connected H-bridge multilevel inverter linking n independent PV arrays to the grid. The control scheme is based on an energy-sampled data model of the PV system and enables the design of a voltage loop linear discrete controller for each array ensuring the stability of the system for the whole range of PV arrays operating conditions. The control design is adapted to Phase-Shifted and Level-Shifted Carrier PWM to share the control action among the cascadeconnected bridges in order to concurrently synthesize a multilevel waveform and to keep each of the PV arrays at its maximum power operating point. Experimental results carried out on a 7-level inverter are included to validate the proposed approach. |
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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::Matemàtiques i estadística
-Discrete-time systems.
-Control theory.
-Control, Teoria de
-Models matemàtics
-Sistemes discrets en temps |
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Rights:
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Document type:
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Article - Published version
Article |
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Published by:
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IEEE Press. Institute of Electrical and Electronics Engineers
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