1. Multi-objective optimization of hybrid PEMFC/Li-ion battery propulsion systems for small and medium size ferries.
- Author
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Pivetta, D., Dall'Armi, C., and Taccani, R.
- Subjects
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PROPULSION systems , *POLYELECTROLYTES , *FUEL cells , *POLYMERIC membranes , *ENERGY management , *FERRIES , *LITHIUM-ion batteries , *AUTOMOBILE power trains - Abstract
Hybrid Polymer Electrolyte Membrane Fuel Cells/Lithium-ion battery powertrains are a promising solution for zero-local-emissions marine propulsion. The present study aims to optimize the design and operation of such hybrid powertrain for small-size passenger ferries, taking into account the performance degradation of both fuel cells and batteries. A Mixed-Integer Linear-Programming approach and a hierarchical method are adopted to concurrently minimize the fuel cells degradation, the capital expenditure and the operating expenditure, while constraints are included in the model to limit the battery degradation. The results show that the proposed multi-objective optimization can lead to a reduction of fuel cells degradation by up to 65% compared to a cost-minimization only. However, this can imply an increase in the battery capacity by up to 136%. The proposed method has general validity, and it is a useful tool for both preliminary design and choice of the optimal energy management strategy for ships energy systems. • Optimal design and operation of a hybrid PEMFC/Li-ion battery propulsion system. • Optimization-based approach to concurrently minimize costs and PEMFC degradation. • Reduction of PEMFC degradation by up to 65% respect only cost minimization method. • The limited PEMFC degradation implies an unavoidable increase in battery capacity. [ABSTRACT FROM AUTHOR]
- Published
- 2021
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