Apparatus, system, and method for AC bus loss detection and AC bus disconnection for electric vehicles having a house keeping power supply

摘要

An alternating current (AC) bus malfunction detection and protection module monitors an AC voltage that is provided on a bus by a house keeping power supply of a power system. If the AC voltage on the bus falls below a first level, the module provides a delay before power inverter switching is disabled. If the AC voltage on the bus falls below a second level, the module disables the power inverter switching without delay.