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Performance evaluation of a 3-level ANPC photovoltaic grid-connected inverter with 650V SiC devices and optimized PWM

Barater, Davide; Concari, Carlo; Buticchi, Giampaolo; Gurpinar, Emre; De, Dipankar; Castellazzi, Alberto


Davide Barater

Carlo Concari

Giampaolo Buticchi

Emre Gurpinar

Dipankar De

Alberto Castellazzi


Photovoltaic (PV) energy conversion has been on the spotlight of scientific research on renewable energy for several years. In recent years the bulk of the research on PV has focused on transformerless grid-connected inverters, more efficient than traditional line transformer-based ones, but more critical from a power quality point of view, especially in terms of ground leakage current. Neutral point clamped (NPC) inverters have recently gained interest due to their intrinsically low ground leakage current and high efficiency, especially for MOSFET-based topologies. This paper presents an active NPC (ANPC) topology equipped with 650 V SiC MOSFETs, with a new modulation strategy that allows to reap the benefits of the wide-bandgap devices. An efficiency improvement is obtained due to the parallel operation of two devices during the freewheeling intervals. Simulations and experimental results confirm the effectiveness of the proposed converter.


Barater, D., Concari, C., Buticchi, G., Gurpinar, E., De, D., & Castellazzi, A. (2016). Performance evaluation of a 3-level ANPC photovoltaic grid-connected inverter with 650V SiC devices and optimized PWM. IEEE Transactions on Industry Applications, 52(2), 2475-2485.

Journal Article Type Article
Acceptance Date Dec 4, 2015
Publication Date Jan 4, 2016
Deposit Date May 25, 2016
Publicly Available Date Jul 7, 2016
Journal IEEE Transactions on Industry Applications
Print ISSN 0093-9994
Electronic ISSN 1939-9367
Publisher Institute of Electrical and Electronics Engineers
Peer Reviewed Peer Reviewed
Volume 52
Issue 2
Pages 2475-2485
Keywords Active neutral-point-clamped (ANPC), photo-voltaic power systems, power conversion efficiency, pulsewidth-odulated power converters, wide-bandgap semiconductors
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Additional Information (c)2016 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other users, including reprinting/ republishing this material for advertising or promotional purposes, creating new collective works for resale or redistribution to servers or lists, or reuse of any copyrighted components of this work in other works.


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