Grid-Connected Forward Microinverter With Primary-Parallel Secondary-Series Transformer

Meneses Herrera, David and García Suárez, Oscar and Alou Cervera, Pedro and Oliver Ramírez, Jesús Angel and Cobos Márquez, José Antonio (2015). Grid-Connected Forward Microinverter With Primary-Parallel Secondary-Series Transformer. "IEEE Transactions on Power Electronics", v. 30 (n. 9); pp. 4819-4830. ISSN 0885-8993. https://doi.org/10.1109/TPEL.2014.2365760.

Description

Title: Grid-Connected Forward Microinverter With Primary-Parallel Secondary-Series Transformer
Author/s:
  • Meneses Herrera, David
  • García Suárez, Oscar
  • Alou Cervera, Pedro
  • Oliver Ramírez, Jesús Angel
  • Cobos Márquez, José Antonio
Item Type: Article
Título de Revista/Publicación: IEEE Transactions on Power Electronics
Date: September 2015
ISSN: 0885-8993
Volume: 30
Subjects:
Freetext Keywords: AC-module,micro-inverter,multiphase,photovoltaic
Faculty: E.T.S.I. Industriales (UPM)
Department: Automática, Ingeniería Electrónica e Informática Industrial [hasta 2014]
Creative Commons Licenses: Recognition - No derivative works - Non commercial

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Abstract

This paper presents a primary-parallel secondaryseries multicore forward microinverter for photovoltaic ac-module application. The presented microinverter operates with a constant off-time boundary mode control, providing MPPT capability and unity power factor. The proposed multitransformer solution allows using low-profile unitary turns ratio transformers. Therefore, the transformers are better coupled and the overall performance of the microinverter is improved. Due to the multiphase solution, the number of devices increases but the current stress and losses per device are reduced contributing to an easier thermal management. Furthermore, the decoupling capacitor is split among the phases, contributing to a low-profile solution without electrolytic capacitors suitable to be mounted in the frame of a PV module. The proposed solution is compared to the classical parallel-interleaved approach, showing better efficiency in a wide power range and improving the weighted efficiency.

More information

Item ID: 40754
DC Identifier: http://oa.upm.es/40754/
OAI Identifier: oai:oa.upm.es:40754
DOI: 10.1109/TPEL.2014.2365760
Official URL: http://ieeexplore.ieee.org/xpls/abs_all.jsp?arnumber=6940259
Deposited by: Memoria Investigacion
Deposited on: 06 Jun 2016 10:26
Last Modified: 06 Jun 2016 10:31
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