Supercritical Carbon Dioxide (sCO2)-Cooled Current Source Inverter-based Integrated Motor Drive for MW-scale Electric Aviation Applications

Hang Dai; John Yagielski; Thomas Jahns; Kum Kang Huh; Vandana Rallabandi; Libing Wang; Tarak Saha; Wenda Feng; Bulent Sarlioglu

doi:10.1109/APEC48143.2025.10977553

Supercritical Carbon Dioxide (sCO₂)-Cooled Current Source Inverter-based Integrated Motor Drive for MW-scale Electric Aviation Applications

Hang Dai, John Yagielski, Thomas Jahns, Kum Kang Huh, Vandana Rallabandi, Libing Wang, Tarak Saha, Wenda Feng, Bulent Sarlioglu

Electric Drives Research

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

Abstract

Wide-bandgap enabled current-source inverter (CSI) is a promising power converter topology that has cleaner output voltage waveform, higher fault tolerance, and higher temperature operation capability than conventional voltage-source inverters (VSI). This paper presents a WBG-enabled CSI for a 2-MW integrated motor drive (IMD) for electric aviation application. The CSI system consists of two series-connected CSI that forms as a unit, and three such units are connected in parallel to drive a specially designed surface permanent magnet synchronous motor (PMSM) that has six individual groups of three-phase windings. Furthermore, the CSI's dc-link inductor and power modules are cooled with supercritical carbon dioxide (sCO2), and also cools the integrated PMSM's stator windings. The proposed CSI-based MW-scale IMD achieves an estimated 97.3% efficiency and 18.1 kW/kg power density. Its high-power density and promising fault-tolerance characteristics make it a competitive solution for MW-scale electric aviation applications.

Original language	English
Title of host publication	APEC 2025 - 14th Annual IEEE Applied Power Electronics Conference and Exposition
Publisher	Institute of Electrical and Electronics Engineers Inc.
Pages	3174-3180
Number of pages	7
ISBN (Electronic)	9798331516116
DOIs	https://doi.org/10.1109/APEC48143.2025.10977553
State	Published - 2025
Event	14th Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2025 - Atlanta, United States Duration: Mar 16 2025 → Mar 20 2025

Publication series

Name	Conference Proceedings - IEEE Applied Power Electronics Conference and Exposition - APEC
ISSN (Print)	1048-2334
ISSN (Electronic)	2470-6647

Conference

Conference	14th Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2025
Country/Territory	United States
City	Atlanta
Period	03/16/25 → 03/20/25

Funding

The authors gratefully acknowledge the support from U.S. Advanced Research Project Agency-Energy (ARPA-E) under Project Number DE-AR0001353. The views and opinions expressed in this paper are those of the authors and do not necessarily reflect those of the U.S. ARPA-E.

Keywords

current source inverter
electric aviation
integrated motor drive
sCO

Access to Document

10.1109/APEC48143.2025.10977553

Cite this

Dai, H., Yagielski, J., Jahns, T., Huh, K. K., Rallabandi, V., Wang, L., Saha, T., Feng, W., & Sarlioglu, B. (2025). Supercritical Carbon Dioxide (sCO₂)-Cooled Current Source Inverter-based Integrated Motor Drive for MW-scale Electric Aviation Applications. In APEC 2025 - 14th Annual IEEE Applied Power Electronics Conference and Exposition (pp. 3174-3180). (Conference Proceedings - IEEE Applied Power Electronics Conference and Exposition - APEC). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/APEC48143.2025.10977553

Dai, Hang ; Yagielski, John ; Jahns, Thomas et al. / Supercritical Carbon Dioxide (sCO₂)-Cooled Current Source Inverter-based Integrated Motor Drive for MW-scale Electric Aviation Applications. APEC 2025 - 14th Annual IEEE Applied Power Electronics Conference and Exposition. Institute of Electrical and Electronics Engineers Inc., 2025. pp. 3174-3180 (Conference Proceedings - IEEE Applied Power Electronics Conference and Exposition - APEC).

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abstract = "Wide-bandgap enabled current-source inverter (CSI) is a promising power converter topology that has cleaner output voltage waveform, higher fault tolerance, and higher temperature operation capability than conventional voltage-source inverters (VSI). This paper presents a WBG-enabled CSI for a 2-MW integrated motor drive (IMD) for electric aviation application. The CSI system consists of two series-connected CSI that forms as a unit, and three such units are connected in parallel to drive a specially designed surface permanent magnet synchronous motor (PMSM) that has six individual groups of three-phase windings. Furthermore, the CSI's dc-link inductor and power modules are cooled with supercritical carbon dioxide (sCO2), and also cools the integrated PMSM's stator windings. The proposed CSI-based MW-scale IMD achieves an estimated 97.3% efficiency and 18.1 kW/kg power density. Its high-power density and promising fault-tolerance characteristics make it a competitive solution for MW-scale electric aviation applications.",

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Dai, H, Yagielski, J, Jahns, T, Huh, KK, Rallabandi, V, Wang, L, Saha, T, Feng, W & Sarlioglu, B 2025, Supercritical Carbon Dioxide (sCO₂)-Cooled Current Source Inverter-based Integrated Motor Drive for MW-scale Electric Aviation Applications. in APEC 2025 - 14th Annual IEEE Applied Power Electronics Conference and Exposition. Conference Proceedings - IEEE Applied Power Electronics Conference and Exposition - APEC, Institute of Electrical and Electronics Engineers Inc., pp. 3174-3180, 14th Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2025, Atlanta, United States, 03/16/25. https://doi.org/10.1109/APEC48143.2025.10977553

Supercritical Carbon Dioxide (sCO₂)-Cooled Current Source Inverter-based Integrated Motor Drive for MW-scale Electric Aviation Applications. / Dai, Hang; Yagielski, John; Jahns, Thomas et al.
APEC 2025 - 14th Annual IEEE Applied Power Electronics Conference and Exposition. Institute of Electrical and Electronics Engineers Inc., 2025. p. 3174-3180 (Conference Proceedings - IEEE Applied Power Electronics Conference and Exposition - APEC).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

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AU - Rallabandi, Vandana

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AB - Wide-bandgap enabled current-source inverter (CSI) is a promising power converter topology that has cleaner output voltage waveform, higher fault tolerance, and higher temperature operation capability than conventional voltage-source inverters (VSI). This paper presents a WBG-enabled CSI for a 2-MW integrated motor drive (IMD) for electric aviation application. The CSI system consists of two series-connected CSI that forms as a unit, and three such units are connected in parallel to drive a specially designed surface permanent magnet synchronous motor (PMSM) that has six individual groups of three-phase windings. Furthermore, the CSI's dc-link inductor and power modules are cooled with supercritical carbon dioxide (sCO2), and also cools the integrated PMSM's stator windings. The proposed CSI-based MW-scale IMD achieves an estimated 97.3% efficiency and 18.1 kW/kg power density. Its high-power density and promising fault-tolerance characteristics make it a competitive solution for MW-scale electric aviation applications.

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Dai H, Yagielski J, Jahns T, Huh KK, Rallabandi V, Wang L et al. Supercritical Carbon Dioxide (sCO₂)-Cooled Current Source Inverter-based Integrated Motor Drive for MW-scale Electric Aviation Applications. In APEC 2025 - 14th Annual IEEE Applied Power Electronics Conference and Exposition. Institute of Electrical and Electronics Engineers Inc. 2025. p. 3174-3180. (Conference Proceedings - IEEE Applied Power Electronics Conference and Exposition - APEC). doi: 10.1109/APEC48143.2025.10977553