Hybrid-electric propulsion is an enabling technology to make aircraft more fuel-efficient, quieter, and create lower carbon emissions. This paper presents a high power density medium-voltage (MV) megawatt-scale power converter based on a hybrid three-level active neutral-point-clamped (3L-ANPC) topology. To achieve high efficiency, the switching devices that operate at the carrier frequency are Silicon Carbide (SiC) Metal-Oxide Semiconductor Field-Effect Transistors (MOSFETs). Conventional Silicon (Si) Insulated-Gate Bipolar Transistors (IGBTs) switches operate at the fundamental output frequency. 2.4kV dc bus voltage was chosen to reduce system cable weight. The fundamental output frequency of the converter is 1.4kHz to drive a high speed motor The large fundamental frequency helps reduce system weight. Filters are designed to meet dv/dt limits on ac side and EMI specifications on dc side. Main hardware development and control modulation strategies are presented. Experimental results are included to verify the performance of this MW-scale power converter. The converter achieves a high efficiency of 99.1%, specific power density of higher than 18kVA/kg and high power density of 10MVA/m3.
|Title of host publication||2019 IEEE Energy Conversion Congress and Exposition, ECCE 2019|
|Number of pages||7|
|State||Published - Sep 2019|
|Event||11th Annual IEEE Energy Conversion Congress and Exposition, ECCE 2019 - Baltimore, United States|
Duration: Sep 29 2019 → Oct 3 2019
|Name||2019 IEEE Energy Conversion Congress and Exposition, ECCE 2019|
|Conference||11th Annual IEEE Energy Conversion Congress and Exposition, ECCE 2019|
|Period||9/29/19 → 10/3/19|
Bibliographical noteFunding Information:
ACKNOWLEDGMENT The authors would like to express sincere thanks to the U.S. National Aeronautics and Space Administration (NASA) and the Department of Energy (DOE) for their partial financial support (NASA Grant No. NNC15CA29C and DOE Grant No. DE-EE0007252) for the work presented in this paper. This presentation was prepared with the support of the U.S. NASA under Award No. 80GRC019C0014. However, any opinions, findings, conclusions or other recommendations expressed herein are those of the author(s) and do not necessarily reflect the views of the U.S. NASA. Thanks are also expressed to all the colleagues at GE-GRC and GE Aviation who provided much support in the power converter tests.
© 2019 IEEE.
- ANPC inverter
- High efficiency
- High power density
- Hybrid-electric propulsion systems
- Silicon Carbide
ASJC Scopus subject areas
- Mechanical Engineering
- Control and Optimization
- Energy Engineering and Power Technology
- Electrical and Electronic Engineering