Development and Validation of a SiC Based 50 kW Grid-Connected PV Inverter

Singh, Akanksha; Chinthavali, Madhu Sudhan; Sudhoff, Scott; Benion, Kevin; Prabakar, Kumaraguru; Feng, Xuhui; Wang, Zhiqiang; Campbell, Steven

doi:10.1109/ECCE.2018.8557392

Development and Validation of a SiC Based 50 kW Grid-Connected PV Inverter

Conference · Sat Sep 01 00:00:00 EDT 2018 · IEEE Energy Conversion Congress and Exposition (ECCE)

DOI:https://doi.org/10.1109/ECCE.2018.8557392· OSTI ID:1607291

Singh, Akanksha ^[1]; ^[2]; Sudhoff, Scott ^[3]; Benion, Kevin ^[1]; Prabakar, Kumaraguru ^[1]; Feng, Xuhui ^[1]; ^[2]; ^[2]

National Renewable Energy Laboratory (NREL)
ORNL
Purdue University

The future power grid will involve increasing numbers of power converters while growing the complexity of the power systems. The future of the power converters is driven by developments in the wide-bandgap semiconductor devices. In this paper, a 50-kW string photovoltaic (PV) inverter designed and developed using all silicon carbide (SiC) semiconductor devices is presented. The inverter design includes an additively manufactured power block, symmetrical Y-core inductors for the ac-side filter, and advanced inverter controls for grid support functionality. This inverter uses the conventional three-phase voltage source inverter topology and optimizes the design for SiC-based devices. The paper includes details on power module design, heatsink optimization, symmetrical Y-core filter inductor design, inverter thermal design, and further experimental validation of the inverter performance. In addition to presenting the quantification of inverter efficiency and quality of the output, the paper presents the validation of advanced grid-support functions required by the IEEE 1547 standards for the interconnection of distributed energy resources.

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Research Organization:: Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)

Sponsoring Organization:: USDOE Office of Energy Efficiency and Renewable Energy (EERE)

DOE Contract Number:: AC05-00OR22725

OSTI ID:: 1607291

Journal Information:: IEEE Energy Conversion Congress and Exposition (ECCE), Journal Name: IEEE Energy Conversion Congress and Exposition (ECCE) Vol. 2018; ISSN 2329-3721

Publisher:: IEEE

Country of Publication:: United States

Language:: English

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