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- Title
Multilevel Aircraft-Inverter Design Based on Wavelet PWM for More Electric Aircraft.
- Authors
Catalbas, Nurbanu; Pakfiliz, Ahmet Gungor; Soysal, Gokhan
- Abstract
This paper proposes a comprehensive power system designed for the use of a more electric aircraft power distribution system. Instead of traditional Nicad battery solutions as the energy source of the aircraft power system, lithium battery structures, which are a recent and promising solution in the field of aviation power systems, are modeled and analyzed. In this study, a WPWM-based, single-phase, multi-level pure sine wave static aircraft-inverter system is designed and integrated to improve the performance of conventional aircraft power systems. In the designed power system, a boost converter structure is proposed that boosts 28 VDC-to-270 VDC voltage coming from the lithium–ion battery pack and can reach a steady state in 0.032 s. The performance of the modeled WPWM-based aircraft-inverter system, compared to SPWM Bipolar and Unipolar switching techniques commonly used in single-phase inverter designs, reveals a THD reduction of approximately 27% with WPWM, resulting in a THD value below 2% for both load current and load voltage. As a result of the study, a power system that will enable the aircraft avionics, ventilation, and navigation systems to perform better than conventional power systems and comply with aircraft electric-power characteristic standards has been designed and detailed.
- Subjects
PULSE width modulation transformers; ELECTRIC power distribution grids; HYBRID electric airplanes
- Publication
Energies (19961073), 2024, Vol 17, Issue 9, p2054
- ISSN
1996-1073
- Publication type
Article
- DOI
10.3390/en17092054