Enhanced Aging Model for Supercapacitors taking into account Power Cycling: Application to the Sizing of an Energy Storage System in a Direct Wave Energy Converter

Thibaut Kovaltchouk (1) , Bernard Multon (1) , Hamid Ben Ahmed (1) , Judicael Aubry (2) , Pascal Venet (3)

1 SATIE - Systèmes et Applications des Technologies de l'Information et de l'Energie
2 ESTACA - Laboratoires des systèmes embarqués - ESTACA
3 MIS - Ampère, Département Méthodes pour l'Ingénierie des Systèmes

This paper proposes an original model for superca-pacitors that takes into account both calendar aging and cycling aging. A state variable is used to quantify the State-Of-Aging. This model is based on a series of recent experiments conducted in various research laboratories on the same technology (Maxwell Technology) and serves to represent the degradation of Equivalent Series Resistance and capacitance. This model is particularly useful in an aging-aware life cycle cost analysis. We show that an accurate aging model is critical to the design of an Energy Storage System that optimizes the economic life cycle cost. Such an optimization is especially applicable for smoothing in offshore systems like Direct Wave Energy Converters, which require both cost reduction and high reliability. The influence of an aging model in the sizing process is investigated towards the end of this paper.

Keywords: Aging; design optimization; direct wave energy converter; energy storage; irregular waves; life estimation; life cycle costing; power quality; power smoothing; supercapacitors

Domains: Electric power

Thibaut Kovaltchouk, Bernard Multon, Hamid Ben Ahmed, Judicael Aubry, Pascal Venet. Enhanced Aging Model for Supercapacitors taking into account Power Cycling: Application to the Sizing of an Energy Storage System in a Direct Wave Energy Converter. IEEE Transactions on Industry Applications, 2015, 51 (3), pp.2405 - 2414. ⟨10.1109/TIA.2014.2369817⟩. ⟨hal-01160366⟩