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Títol:
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Energy-balance control of PV cascaded multilevel grid-connected inverters under level-shifted and phase-shifted PWMs
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Autor/a:
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Chavarría Roé, Javier; Biel Solé, Domingo; Guinjoan Gispert, Francisco; Meza Benavides, Carlos; Negroni Vera, Juan José
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Altres autors:
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Universitat Politècnica de Catalunya. Departament d'Enginyeria Electrònica; Universitat Politècnica de Catalunya. ACES - Control Avançat de Sistemes d'Energia; 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 strat-
egy for a cascaded single-phase grid-connected H-bridge multi-
level inverter linking
n
independent photovoltaic (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 array operating conditions.
The control design is adapted to phase-shifted and level-shifted
carrier pulsewidth modulations to share the control action among
the cascade-connected 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 seven-level inverter are included to validate the proposed
approach. |
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Matèries:
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-Àrees temàtiques de la UPC::Enginyeria electrònica::Electrònica de potència
-Àrees temàtiques de la UPC::Informàtica::Automàtica i control
-Discrete-time systems
-Cascaded H-bridge inverters
-Discrete-time control
-Grid-connected PV systems
-Multilevel modulations
-Sistemes discrets en temps
-Control automàtic
-Sistemes de control
-Semiconductors de potència
-Controladors |
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Drets:
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Tipus de document:
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Article - Versió publicada
Article |
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Publicat per:
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Institute of Electrical and Electronics Engineers (IEEE)
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Compartir:
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