Analysis and optimization of drive system used in electric bike

Abstract

This paper presents the analysis and optimization of a drive system used in an electric bike. The analysed e-bike was equipped with the permanent brushless synchronous motor with mechanical output power in range of 250W. The electric motor together with a planetary gear was mounted in a hub of 26 inch bike wheel. This kind of e-bike can reach maximum speed up to 25km/h. The aim of this paper is to investigate e-drive system used in the commercial e-bike and to optimise the e-motor in order to keep efficiency of the motor and reduce its price. As a result of work the optimized motor topology is presented.