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Full text release has been delayed at the author's request until August 05, 2026

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Megawatt, 3.3kv High Power Modular Multilevel Inverter for Hybrid/Full Electric Aircraft

Dahneem, Ahmed
http://rave.ohiolink.edu/etdc/view?acc_num=dayton1722334367148579

Abstract Details

2024, Master of Science in Electrical Engineering, University of Dayton, Electrical and Computer Engineering.
Hybrid/Full electric aircraft (HEA/FEA) represents an attractive concept due to its potential to reduce CO2 emissions, decrease fossil-fuel consumption, enhance overall aircraft efficiency, and lower operational costs. As technology progresses towards hybrid/full electric aircraft, the development of high-performance motor drive systems becomes imperative. This necessity introduces new constraints, particularly in low-pressure environments. Designing for high-altitude applications requires careful consideration to prevent issues like partial discharge and power system failures in the air. Converters must exhibit ultra-high efficiency, high power density, and exceptional reliability. While wide band-gap devices, such as Silicon-carbide based Metal Oxide Silicon Field Effect Transistors (SiC-MOSFETs), offer improved switching and high-temperature performance over silicon counterparts, their integration into HEA/FEA applications remains challenging. The high switching speed of SiC-MOSFETs reduces switching losses and facilitates the design of high-density inverters. However, selecting suitable devices is critical for designing high-power-rated inverters. Moreover, the risk of partial discharge increases at high voltages in conditions of low air pressure, posing a threat to inverter longevity by compromising system insulation. This thesis evaluates three distinct inverter/converter topologies comprehensively to determine the optimal circuit topology for HEA/FEA applications. The study explores design strategies to ensure busbar integrity, preventing partial discharge without compromising parasitic control. Throughout the thesis, a three-phase megawatt-scale inverter and a 3.3 kV, 288 A power module are designed, fabricated, and tested to validate the proposed design strategies.
Cao Dong (Committee Chair)
Kumar Jitendra (Committee Member)
Ratliff Bradley (Committee Member)
53 p.
Electrical Engineering; Engineering
3-phase inverter, SiC MOSFET, FPGA, Electric Aircraft, Silicon carbide, Switching frequency, Prototypes, Aerospace electronics

Recommended Citations

Citations

  • Dahneem, A. (2024). Megawatt, 3.3kv High Power Modular Multilevel Inverter for Hybrid/Full Electric Aircraft [Master's thesis, University of Dayton]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=dayton1722334367148579

    APA Style (7th edition)

  • Dahneem, Ahmed. Megawatt, 3.3kv High Power Modular Multilevel Inverter for Hybrid/Full Electric Aircraft. 2024. University of Dayton, Master's thesis. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=dayton1722334367148579.

    MLA Style (8th edition)

  • Dahneem, Ahmed. "Megawatt, 3.3kv High Power Modular Multilevel Inverter for Hybrid/Full Electric Aircraft." Master's thesis, University of Dayton, 2024. http://rave.ohiolink.edu/etdc/view?acc_num=dayton1722334367148579

    Chicago Manual of Style (17th edition)

dayton1722334367148579
© 2024, all rights reserved.
This open access ETD is published by University of Dayton and OhioLINK.