**Jakov Topi´c \*, Jure Soldo, Filip Maleti´c, Branimir Škugor and Joško Deur**

Faculty of Mechanical Engineering and Naval Architecture, University of Zagreb, 10002 Zagreb, Croatia; jsoldo@fsb.hr (J.S.); fmaletic@fsb.hr (F.M.); bskugor@fsb.hr (B.Š.); jdeur@fsb.hr (J.D.)

**\*** Correspondence: jtopic@fsb.hr; Tel.: +385-1-6168-555

Received: 20 May 2020; Accepted: 26 June 2020; Published: 2 July 2020

**Abstract:** City bus transport electrification has a strong potential of improving city air quality, reducing noise pollution and increasing passenger satisfaction. Since the city bus operation is rather deterministic and intermittent, the driving range- and charging-related concerns may be effectively overcome by means of fast charging at end stations and/or slow charging in depot. In order to support decision making processes, a simulation tool for planning of city bus transport electrification has been developed and it is presented in this paper. The tool is designed to use real/recorded driving cycles and techno-economic data, in order to calculate the optimal type and number of e-buses and chargers, and predict the total cost of ownership including investment and exploitation cost. The paper focuses on computationally efficient e-bus fleet simulation including powertrain control and charging management aspects, which is illustrated through main results of a pilot study of bus transport electrification planning for the city of Dubrovnik.

**Keywords:** city bus transport; electric vehicles; electrification; software tool; planning; control; charging management; simulation; analysis
