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Asymmetric multilevel topology for photovoltaic energy injection to microgrids

Munoz, Javier; Gaisse, Patricio; Baier, Carlos; Rivera, Marco; Gregor, Raul; Zanchetta, Pericle

Authors

Javier Munoz

Patricio Gaisse

Carlos Baier

Marco Rivera

Raul Gregor

Pericle Zanchetta pericle.zanchetta@nottingham.ac.uk



Abstract

The massive penetration of renewable energy sources in the utility grid has emerged as the solution to obtain clean energy in modern electric systems, which are gradually replacing their generators that produce CO2 emissions to achieve a sustainable growing. Power electronics is quite relevant in the deep penetration of renewable energy, because the use of such equipment is mandatory to integrate these new resources with the existing facilities. In order to reach higher power ranges, multilevel topologies are the state-of-the-art solution, due to the limited rating of the actual semiconductor devices. Furthermore, latest trends show that asymmetric multilevel configurations are an attractive technology to connect directly the power converters to the grid. This paper analyze the photovoltaic energy injection to microgrids using a hybrid approach that mixes the existing topologies: string, multistring and central inverter to implement an asymmetric structure that generate highly sinusoidal resulting waveforms. This document includes a simple analysis of the proposed configuration and highlights the advantages of using an asymmetric converter, supported with stationary and dynamic simulated results.

Publication Date Jun 27, 2016
Peer Reviewed Peer Reviewed
APA6 Citation Munoz, J., Gaisse, P., Baier, C., Rivera, M., Gregor, R., & Zanchetta, P. (2016). Asymmetric multilevel topology for photovoltaic energy injection to microgrids
Keywords Asymmetric Multilevel Converters, Photovoltaic Energy Injection, Microgrids
Publisher URL http://ieeexplore.ieee.org/document/7556665/
Copyright Statement Copyright information regarding this work can be found at the following address: http://eprints.nottingh.../end_user_agreement.pdf

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Copyright Statement
Copyright information regarding this work can be found at the following address: http://eprints.nottingham.ac.uk/end_user_agreement.pdf





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