Fault diagnosis in electric vehicle power electronics components.
BY AFZAL YOUSAF Power electronics components in electric vehicles plays an indispensable role in power exchange between components like Battery, BMS, Motor, electrical accessories etc. Even though electric vehicles requires less maintenance due to lacking more moving parts but power electronics components can become failure due to various reasons. In this article you can read possible Power electronics faults in Electric vehicles and method to diagnose the faults. Power Electronics components in EVs basically constitutes Power elements and power switches. From these kinds, the power electronic components of EVs are classified into:- Converter and Inverter Protection components In converter and Inverter section we can usually see DC-DC converter, DC-AC converter (Inverter) and AC-DC converter (Rectifier). And in Protection components mainly consists of connectors, Relays, Brake resistor etc. Common faults occurring in EV Power electronics are:- Open switch fault Short switch fault