Baseload concepts for increasing fuel cell durability in aircraft multi-powertrain operation
Publication date
2024-06-13
Document type
Konferenzbeitrag
Author
Organisational unit
Conference
NEIS 2023 - Conference on Sustainable Energy Supply and Energy Storage Systems ; Hamburg ; September 4 – 5, 2023
Project
BETA
Book title
NEIS 2023 : Conference on Sustainable Energy Supply and Energy Storage Systems, Hamburg, September 4 – 5, 2023
First page
239
Last page
244
Peer-reviewed
✅
Part of the university bibliography
✅
DDC Class
620 Ingenieurwissenschaften
Keyword
Fuel cell protection
Fuel cell durability
Electric aircraft
Aircraft electric systems
Abstract
To increase the service life or durability of PEM fuel cells, no-load operation at open circuit voltage has to be avoided to reduce destructive electrochemical effects. This paper shows two approaches to realize a regulated base-load with a fuel cell protection unit for application in aircraft multi-powertrain-concepts. Firstly, a clocked MOSFET in the form of a chopper circuit, and secondly, a MOSFET in linear operation as current source. This contribution describes the design concept of both approaches and the validation of prototypes in a laboratory pHiL-environment. Both approaches are proven to be viable solutions, with the current source approach resulting in smoother operation.
Version
Published version
Access right on openHSU
Metadata only access