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Convex optimization of charging infrastructure design and component sizing of a plug-in series HEV powertrain

Nikolce Murgovski (Institutionen för signaler och system, Mekatronik) ; Lars Johannesson (Institutionen för signaler och system, Reglerteknik) ; Jonas Hellgren ; Bo Egardt (Institutionen för signaler och system, Reglerteknik) ; Jonas Sjöberg (Institutionen för signaler och system, Mekatronik)
IFAC Proceedings Volumes. 18th IFAC World Congress, Milano, 28 August - 2 September 2011 (1474-6670). Vol. 18 (2011), p. 13052-13057.
[Konferensbidrag, refereegranskat]

With the topic of plug-in HEV city buses, this paper studies the highly coupled optimization problem of finding the most cost efficient compromise between investing in onboard electric powertrain components and installing a charging infrastructure along the bus line. The paper describes how convex optimization can be used to find the optimal battery sizing for a series HEV with fixed engine and generator unit and a fixed charging infrastructure along the bus line. The novelty of the proposed optimization approach is that both the battery sizing and the energy management strategy are optimized simultaneously by solving a convex problem. In the optimization approach the power haracteristics of the engine-generator unit are approximated by a convex, second order polynomial, and the convex battery model assumes quadratic losses. The paper also presents an example for a specific bus line, showing the dependence between the optimal battery sizing and the number of charging stations on the bus line.

Nyckelord: plug-in series powertrain, charging infrastructure, convex optimization



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Denna post skapades 2011-05-06. Senast ändrad 2015-07-28.
CPL Pubid: 140432

 

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