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||2021 AIAA/IEEE Electric Aircraft Technologies Symposium, EATS 2021|
|State||Published - 2021|
|Event||2021 AIAA/IEEE Electric Aircraft Technologies Symposium, EATS 2021 - Denver, United States|
Duration: Aug 11 2021 → Aug 13 2021
|Name||2021 AIAA/IEEE Electric Aircraft Technologies Symposium, EATS 2021|
|Conference||2021 AIAA/IEEE Electric Aircraft Technologies Symposium, EATS 2021|
|Period||8/11/21 → 8/13/21|
Bibliographical notePublisher Copyright:
© 2021 AIAA.
ASJC Scopus subject areas
- Energy Engineering and Power Technology
- Electrical and Electronic Engineering
- Aerospace Engineering