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Degradation Conscious Li-ion Battery Modelling and Management
October 5 @ 12:00 pm - 1:30 pm
Renewable power sources have been recently widely deployed worldwide in the
pursuit of low-carbon electricity generation. In Australia, the number of
households equipped with rooftop PV systems has reached 1.74 million in 2017,
about 1/5 of all residences. However, with increasing distributed generation
penetration, the intermittent nature of these sources poses significant technical
challenges to the distribution network, such as voltage fluctuations and unbalance,
which is hampering further take-up.
Fortunately, the growing adoption of distributed energy storage, mostly using
lithium-ion (Li-ion) batteries, can alleviate and even completely overcome these
challenges. However, the modelling and production of Li-ion batteries is not yet
mature. High prices coupled with uncertain calendar and cycle lifetime is holding
back widespread adoption by the general public.
In this talk, we will discuss how Li-ion battery electrochemical models
incorporating battery degradation phenomena can be used in the management of
modern distribution systems. Systematic approaches to predict the degradation of
grid-connected lithium-ion batteries based on high-performance physics-based
mathematical models will be presented. Such first-principle models clearly explain
the major degradation mechanisms of lithium batteries from the perspective of
electrochemistry and thermodynamics. The state-of-the-art design of advanced
battery management systems (ABMSs) aiming to achieve overall technical and
economic benefits for the renewable-storage systems will be discussed.
Speaker(s): Mahinda Vilathgamuwa,
Z-Block, Level 10, Gibson Room Z-1064, QUT Gardens Point