Forward-type micro-inverter with current decoupling

A forward-type micro-inverter with current decoupling is proposed to eliminate the usage of large electrolytic capacitors while remains the maximum power point tracking (MPPT) function for the PV panel. The proposed micro-inverter consists of a current decoupling tank (CDT) to absorb the partial PV...

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Bibliographic Details
Published in2013 IEEE Energy Conversion Congress and Exposition pp. 3277 - 3282
Main Authors Chien-Yao Liao, Wen-Hsun Lin, Kai-Shin Chen, Yaow-Ming Chen, Cheng-Yen Chou
Format Conference Proceeding
LanguageEnglish
Published IEEE 01.09.2013
Subjects
Capacitors
Circuit faults
film capacitor
Inductors
Magnetomechanical effects
Micro-inverter
power decoupling
Reliability
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Summary:A forward-type micro-inverter with current decoupling is proposed to eliminate the usage of large electrolytic capacitors while remains the maximum power point tracking (MPPT) function for the PV panel. The proposed micro-inverter consists of a current decoupling tank (CDT) to absorb the partial PV current while a rectified sinusoidal current is injected into the AC grid. Therefore, the constant PV current can be decoupled into sinusoidal AC current. The circuit configuration, operation modes, and control strategy of the proposed micro-inverter are introduced. The proposed micro-inverter has reduced turns-ratio of the transformer and its magnetizing energy can be recycled. Finally, simulation and experimental results are presented to verify the feasibility of the current decoupling function for the proposed micro-inverter.
ISSN:2329-3721
2329-3748
DOI:10.1109/ECCE.2013.6647130