Patent ID: 8322475
Filing Date: 2012-12-04
Classification: B60K,B60L,B60W,Y02T

Abstract:
1. An electric motor drive apparatus driving n (n is a natural number of at least 2) electric motors in a power running mode or regeneration mode, comprising: a capacitive element that smoothes DC voltage, n drive devices that correspond to said n electric motors and are connected in parallel to said capacitive element, each drive device driving a corresponding electric motor based on DC voltage from said capacitive element and activating and outputting a fail signal when detecting a predetermined error, a control device generating n shut down permit signals to permit shut down of said n drive devices, respectively, wherein shut down of said n drive devices is based on receiving at least one fail signal, said control device receiving said fail signal from each of said n drive devices, and n shut down circuits, each of said n shut down circuits corresponding to one of said n drive devices, said control device outputting said n shut down permit signals to said n shut down circuits, respectively, regardless of a power generating state of said n electric motors; at least one shut down circuit outputting a shut down signal designating shut down of the drive device corresponding to said at least one shut down circuit to said corresponding drive device when at least one activated fail signal is received from at least one non-corresponding drive device.