Study and Design of An Efficient Dual-motor Powertrain for Two-wheeled Electric Vehicles

As the market for two-wheeled Electric Vehicle (EV) is growing, it is imperative to improve the efficiency of electric powertrain. Most of the two-wheeled EVs have either motor mounted in the wheel-hub or connected to the rear wheel through a transmission. In-wheel motor has limited torque capacity whereas in the other configuration, transmission reduces the system efficiency. This paper proposes a Dual-motor powertrain topology which aims to combine the best of both configurations. To evaluate and compare the configurations, the energy consumption of the Single-motor and the Dual-motor topologies is calculated over a driving cycle. It is shown that Dual-motor topology efficiently utilizes the available energy compared to Single-motor topology.