Moving toward electric propulsion drives in aircraft applications is a significant step forward to enhance the efficiency of aviation systems. Taking advantage of medium voltage DC (MVDC) as a leading edge technology can further increase the efficiency and power density. To this end, emerging wide-bandgap devices with lower switching losses can be incorporated into multilevel inverter topologies. However, existing Silicon Carbide (SiC) switches have weak short-circuit capability. This is the main downside of all-SiC inverter topologies which restrains their application in safety-critical applications. On the other hand, Silicon (Si) IGBTs have better short-circuit performance, although rendering higher switching losses. To overcome this challenge, a hybrid “Si+SiC” five-level active neutral point clamped (ANPC) inverter is proposed in this paper to improve the short-circuit capability of the aircraft propulsion drive systems. Simulation results comparing the efficiency and short-circuit capability of all-SiC, all-IGBT, and hybrid “Si+SiC” topologies are presented to demonstrate the effectiveness of the proposed topology.
|Title of host publication||AIAA Propulsion and Energy Forum, 2021|
|State||Published - 2021|
|Event||AIAA Propulsion and Energy Forum, 2021 - Virtual, Online|
Duration: Aug 9 2021 → Aug 11 2021
|Name||AIAA Propulsion and Energy Forum, 2021|
|Conference||AIAA Propulsion and Energy Forum, 2021|
|Period||8/9/21 → 8/11/21|
Bibliographical notePublisher Copyright:
© 2021, American Institute of Aeronautics and Astronautics Inc.. All rights reserved.
ASJC Scopus subject areas
- Energy (all)
- Aerospace Engineering
- Control and Systems Engineering
- Electrical and Electronic Engineering
- Mechanical Engineering