A Fault-Tolerant Electronic Differential System of Electric Vehicles

This paper proposes an electronic differential system (EDS) for the dual-rear-wheel independently driven electric vehicle (EV), which is driven by five-phase fault-tolerant permanent magnet motors. The master-slave structure for this EDS is chosen and designed. The EDS adapts the speeds of each wheel according to the allocated requirement of the power and torque. Based on the Ackermann-Jeantand turning model, different speeds of two wheels are calculated. In addition, the reliable operated performance of the system is verified by simulations. As a result, the proposed system is proved to be very suitable for EVs.