Intercell Transformer (ICT) Design Optimization and Interphase Crosstalk Mitigation of a 100-kW SiC Filter-Less Grid-Connected PV String Inverter

Intercell Transformer (ICT) Design Optimization and Interphase Crosstalk Mitigation of a 100-kW SiC Filter-Less Grid-Connected PV String Inverter

Increasing the specific power and efficiency of a power converter has been the forever-lasting task for power electronics engineers. With the Wide bandgap (WBG) semiconductor devices, new opportunities and challenges have been found. In this article, a 100-kW SiC grid-connected Photovoltaic (PV) str...

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Bibliographic Details
Main Authors: Yanjun Shi, Hui Li, Lu Wang, Yu Zhang
Format: Article
Language:English
Published: IEEE 2020-01-01
Series:IEEE Open Journal of Power Electronics
Subjects:
Inverter
power density
silicon carbide MOSFET
filter-less
Online Access:https://ieeexplore.ieee.org/document/8989993/
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spelling doaj-ca4c08fabce74062b17344ebd85a9e1e2021-03-29T18:59:28ZengIEEEIEEE Open Journal of Power Electronics2644-13142020-01-011516310.1109/OJPEL.2020.29730748989993Intercell Transformer (ICT) Design Optimization and Interphase Crosstalk Mitigation of a 100-kW SiC Filter-Less Grid-Connected PV String InverterYanjun Shi0https://orcid.org/0000-0002-1699-4455Hui Li1https://orcid.org/0000-0002-4773-3354Lu Wang2https://orcid.org/0000-0003-4590-9501Yu Zhang3Center for Advanced Power Systems, Florida State University, Tallahassee, FL, USACenter for Advanced Power Systems, Florida State University, Tallahassee, FL, USACenter for Advanced Power Systems, Florida State University, Tallahassee, FL, USACenter for Advanced Power Systems, Florida State University, Tallahassee, FL, USAIncreasing the specific power and efficiency of a power converter has been the forever-lasting task for power electronics engineers. With the Wide bandgap (WBG) semiconductor devices, new opportunities and challenges have been found. In this article, a 100-kW SiC grid-connected Photovoltaic (PV) string inverter is proposed. This SiC inverter is free of a grid interface filter, the size, weight, and cost of magnetic components are therefore reduced. In addition, to further achieve high power density high efficiency at 100kW, design aspects including closed-form equation to avoid overdesign passive components, ICT design optimization, and interphase crosstalk mitigation with high switching frequency have been presented. A 100-kW three-phase two-stage prototype has been built in the laboratory, which achieves a specific power of 5 kW/kg, measured peak efficiency of 99.5%, and California Energy Commission (CEC) efficiency of 99.2%.https://ieeexplore.ieee.org/document/8989993/Inverterpower densitysilicon carbide MOSFETfilter-less
collection DOAJ
language English
format Article
sources DOAJ
author Yanjun Shi
Hui Li
Lu Wang
Yu Zhang
spellingShingle Yanjun Shi
Hui Li
Lu Wang
Yu Zhang
Intercell Transformer (ICT) Design Optimization and Interphase Crosstalk Mitigation of a 100-kW SiC Filter-Less Grid-Connected PV String Inverter
IEEE Open Journal of Power Electronics
Inverter
power density
silicon carbide MOSFET
filter-less
author_facet Yanjun Shi
Hui Li
Lu Wang
Yu Zhang
author_sort Yanjun Shi
title Intercell Transformer (ICT) Design Optimization and Interphase Crosstalk Mitigation of a 100-kW SiC Filter-Less Grid-Connected PV String Inverter
title_short Intercell Transformer (ICT) Design Optimization and Interphase Crosstalk Mitigation of a 100-kW SiC Filter-Less Grid-Connected PV String Inverter
title_full Intercell Transformer (ICT) Design Optimization and Interphase Crosstalk Mitigation of a 100-kW SiC Filter-Less Grid-Connected PV String Inverter
title_fullStr Intercell Transformer (ICT) Design Optimization and Interphase Crosstalk Mitigation of a 100-kW SiC Filter-Less Grid-Connected PV String Inverter
title_full_unstemmed Intercell Transformer (ICT) Design Optimization and Interphase Crosstalk Mitigation of a 100-kW SiC Filter-Less Grid-Connected PV String Inverter
title_sort intercell transformer (ict) design optimization and interphase crosstalk mitigation of a 100-kw sic filter-less grid-connected pv string inverter
publisher IEEE
series IEEE Open Journal of Power Electronics
issn 2644-1314
publishDate 2020-01-01
description Increasing the specific power and efficiency of a power converter has been the forever-lasting task for power electronics engineers. With the Wide bandgap (WBG) semiconductor devices, new opportunities and challenges have been found. In this article, a 100-kW SiC grid-connected Photovoltaic (PV) string inverter is proposed. This SiC inverter is free of a grid interface filter, the size, weight, and cost of magnetic components are therefore reduced. In addition, to further achieve high power density high efficiency at 100kW, design aspects including closed-form equation to avoid overdesign passive components, ICT design optimization, and interphase crosstalk mitigation with high switching frequency have been presented. A 100-kW three-phase two-stage prototype has been built in the laboratory, which achieves a specific power of 5 kW/kg, measured peak efficiency of 99.5%, and California Energy Commission (CEC) efficiency of 99.2%.
topic Inverter
power density
silicon carbide MOSFET
filter-less
url https://ieeexplore.ieee.org/document/8989993/
work_keys_str_mv AT yanjunshi intercelltransformerictdesignoptimizationandinterphasecrosstalkmitigationofa100kwsicfilterlessgridconnectedpvstringinverter
AT huili intercelltransformerictdesignoptimizationandinterphasecrosstalkmitigationofa100kwsicfilterlessgridconnectedpvstringinverter
AT luwang intercelltransformerictdesignoptimizationandinterphasecrosstalkmitigationofa100kwsicfilterlessgridconnectedpvstringinverter
AT yuzhang intercelltransformerictdesignoptimizationandinterphasecrosstalkmitigationofa100kwsicfilterlessgridconnectedpvstringinverter
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