Grey-box Modeling of Reversible Solid Oxide Cell Stack’s Electrical Dynamics Based on Electrochemical Impedance Spectroscopy
- Resource Type
- Conference
- Authors
- Jessen, Kasper; Soltani, Mohsen; Hajizadeh, Amin; Jensen, Soren H.; Schaltz, Erik; Nielsen, Martin N.; Smitshuysen, Thomas E. L.
- Source
- 2023 IEEE Conference on Control Technology and Applications (CCTA) Control Technology and Applications (CCTA), 2023 IEEE Conference on. :382-387 Aug, 2023
- Subject
- Aerospace
Power, Energy and Industry Applications
Robotics and Control Systems
Transportation
Solid modeling
Transient response
Voltage measurement
Voltage
Aging
Solids
Data models
System Identification
Grey-box modeling
Electrochemical Impedance Spectroscopy
Electrolysis
- Language
- ISSN
- 2768-0770
This paper aims to design a lumped-capacity model of a reversible solid oxide cell stack for hydrogen electrolysis. The lumped-capacity model needs to have an adequate representation of the electrical dynamics over a wide operating range and a model structure suitable for the design of a physical emulator. The grey-box model is based on data obtained by electrochemical impedance spectroscopy conducted on a commercial solid oxide cell stack for four different gas compositions at six aging stages. In addition, a comparison of the experimental and simulated voltage response of the reversible solid oxide cell stack in cyclic reversible operation mode was conducted at different aging levels of the stack.