Convex optimization of charging infrastructure design and component sizing of a plug-in series HEV powertrain
Paper in proceedings, 2011

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.

convex optimization

plug-in series powertrain

charging infrastructure

Author

Nikolce Murgovski

Chalmers, Signals and Systems, Systems and control, Mechatronics

Lars Johannesson

Chalmers, Signals and Systems, Systems and control, Automatic Control

Jonas Hellgren

Volvo Group

Bo Egardt

Chalmers, Signals and Systems, Systems and control, Automatic Control

Jonas Sjöberg

Chalmers, Signals and Systems, Systems and control, Mechatronics

IFAC Proceedings Volumes (IFAC-PapersOnline)

14746670 (ISSN)

Vol. 18 PART 1 13052-13057

Areas of Advance

Transport

Energy

Subject Categories

Vehicle Engineering

Control Engineering

DOI

10.3182/20110828-6-IT-1002.01047

ISBN

978-390266193-7

More information

Latest update

11/23/2018