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Title:
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Performance evaluation of three-phase grid-connected photovoltaic inverters using electrolytic or polypropylene film capacitors
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Author:
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Karanayil, Baburaj; Agelidis, Vassilios; Pou Félix, Josep
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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 grid-connected photovoltaic (PV) power stations, improving the life expectancy and long-term reliability of three-phase PV inverters is urgently needed to match the significantly higher lifetime of the PV modules. A key contribution toward such improvement is replacing the conventional electrolytic film capacitors by metallized polypropylene film ones. This paper presents a detailed evaluation of a conventional three-phase grid-connected PV inverter performance when replacing the electrolytic capacitor with a minimum value of metallized polypropylene film capacitor. Although the minimum dc bus capacitance leads to higher voltage ripples, such ripples were found to be within acceptable limits to operate the inverter satisfactorily. Simulation and experimental results are presented for a 5-kW grid-connected inverter prototype with a nominal dc voltage of 457 V to confirm the theoretical considerations. |
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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::Energies::Energia solar fotovoltaica
-Àrees temàtiques de la UPC::Enginyeria electrònica
-Photovoltaic power generation
-Electric capacity
-Electrolytic capacitor
-grid-connected inverters
-metallized polypropylene film capacitor
-photovoltaic (PV) systems
-Energia solar fotovoltaica
-Capacitat elèctrica |
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Rights:
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Document type:
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Article - Published version
Article |
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