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Design and Demonstration of an 850 V dc to 13.8 kV ac 100 kW Three-phase Four-wire Power Conditioning System Converter Using 10 kV SiC MOSFETs

Conference · · 2023 IEEE Applied Power Electronics Conference and Exposition (APEC)
 [1];  [2];  [2]
  1. ABB. Inc,ABB US Research Center,Raleigh,NC,USA
  2. The University of Tennessee, Knoxville,CURENT,Knoxville,TN,USA

In this paper, an 850 V dc to 13.8 kV ac 100 kW modular multilevel three-phase four-wire dc/ac converter based on 10 kV SiC MOSFETs is designed and demonstrated. The design considerations of key components, including the dc-link, device cooling, gate driver, isolated gate driver power supply (GDPS), medium voltage (MV) ac filter inductor, MV and medium frequency transformer, and the mechanical design are discussed. Two converters are designed, and two prototypes are developed, to study the converter paralleling operation and scalability. Both converters are fully tested up to their voltage and power ratings. However, the two converters are not identical. Based on the design and test results of the first converter, the MV power stage, transformer design, GDPS, as well as the low voltage power stage in the second converter are improved for smaller size and/or higher efficiency. Compared to the version 1 converter, the version 2 converter achieves 49% volume reduction and 2 percentage point efficiency improvement, with a peak efficiency of 98.4% at the rated power.

Research Organization:
Univ. of Tennessee, Knoxville, TN (United States)
Sponsoring Organization:
USDOE Office of Energy Efficiency and Renewable Energy (EERE), Energy Efficiency Office. Advanced Materials & Manufacturing Office (AMMTO)
DOE Contract Number:
EE0008410
OSTI ID:
1987947
Report Number(s):
DOE-UTK-08410-14
Journal Information:
2023 IEEE Applied Power Electronics Conference and Exposition (APEC), Conference: 2023 IEEE Applied Power Electronics Conference and Exposition (APEC), Orlando, FL, USA, 19-23 March 2023
Country of Publication:
United States
Language:
English

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