Proposal of a control scheme for an active filter on PV micro-inverter applications

This paper aims to present the development of a single-phase inverter with high efficiency and high power density to be applied on photovoltaic panel's applications. A DC active filter technique, which mitigates the low frequency ripple across the DC Link, is proposed. This way, there is a redu...

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Bibliographic Details
Main Authors: Bezerra, Marcus A. A., Oliveira, Jorge L. W., Praca, Paulo P., Oliveira, Demercil S., Barreto, Luiz Henrique S. C.
Format: Conference Proceeding
Language:English
Subjects:
Active Filter
Active filters
Capacitors
Inverters
Leakage Current
Low Frequency
Photovoltaic systems
Single-Phase Inverter
Topology
Transfer functions
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Summary:This paper aims to present the development of a single-phase inverter with high efficiency and high power density to be applied on photovoltaic panel's applications. A DC active filter technique, which mitigates the low frequency ripple across the DC Link, is proposed. This way, there is a reduction in the stored energy in the DC link, which avoids the need for a very large capacitance, which implies a reduction in costs and in total volume of the capacitive bank. The inverter uses the unipolar modulation in order to reduce the reactive energy on the DC side while a double LC filter with a resonant control provides a low current harmonic content, high power factor as well as a low leakage current. The validation of this work is done through simulation and experimental results obtained from a 2kW prototype converter.
ISSN:2470-6647
DOI:10.1109/APEC.2017.7931099