Abstract:
A vital component of a battery electric vehicle is the electric propulsion system. Performance
degradation in the drive system and, more seriously, a loss of power in the vehicle may result from
anomalies in the electric drive system components. An integrated prognosis system for the early
isolation and detection of the electric drive system and component failure of small BEVs is
proposed in this project. The primary objective of this thesis is to develop a novel technology for
prognosis and drive system failure diagnostics, which in turn avoids loss of propulsion and the
walk-to-home situation for small BEV customers. Based on available fault statics of BEVs, various
faults are ranked and selected lead electrical faults such as stator winding open and short circuit
faults to reduce the complexity of the system and to implement in budget small BEVs
economically. The novelty of the proposed system is fault diagnosing of the entire electric drive
system, that is the BEV battery fault also diagnosing here. The battery health check is related to
the ageing of the battery or remaining life period based on battery SOC, voltage, current, and the
occurrence of severe degradation in the battery. Detecting the defect at its earliest stage will help
to significantly reduce the cost of maintenance
