Abstract
The fuel cell (FC)-powered electric aircraft (EA) is a promising architecture in the electrification of aviation. FCs, as the primary energy source, supply the thrust power to the dynamic change constant power load (CPL). Energy storage systems (ESSs) maintain the power balance in the system and regulate the dc-link voltage. In this article, the simplified multiple-source dc network is modeled. The equivalent model allows the performance of a nonlinear stability analysis to predict the system’s dynamic characteristics during load perturbations. Furthermore, a stability boundary is derived from the Jacobian matrix and eigenvalues of the system. Sensitivity analysis of key parameters, such as droop settings, dc capacitance, and line inductance is presented based on bifurcation theory. The theoretical analysis is instrumental in the design of a reliable onboard dc network. The key findings are validated by simulations and experimental tests.
| Original language | English |
|---|---|
| Pages (from-to) | 4551 - 4562 |
| Number of pages | 12 |
| Journal | IEEE Journal of Emerging and Selected Topics in Power Electronics |
| Volume | 13 |
| Issue number | 4 |
| Early online date | 19 Dec 2024 |
| DOIs | |
| Publication status | Published - 31 Aug 2025 |
Funding
This work was supported by GKN Aerospace. The authors would like to thank GKN Aerospace, Bristol, U.K., for providing relevant test cases/data.
| Funders | Funder number |
|---|---|
| GKN Aerospace Services |
Keywords
- Constant power load (CPL)
- electric aircraft (EA)
- energy storage system (ESS)
- multiple-source dc network
- stability analysis
ASJC Scopus subject areas
- Energy Engineering and Power Technology
- Electrical and Electronic Engineering
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