Patent ID: 11881798
Assignee: HITACHI ASTEMO, LTD.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  B | IPC H

Claim 0:
1. A motor drive control apparatus including energization systems for energizing a motor having a plurality of independent winding sets, with the energization systems corresponding one-to-one to the winding sets, the motor drive control apparatus comprising:
a plurality of sensors which is provided for each of the energization systems and which detects common physical amounts relating to driving control of the motor;
a controller which is provided for each of the energization systems and which controls energization of the corresponding winding set based on output signals of the corresponding sensors;
a power supply path which is provided for each of the energization systems and which supplies power to the corresponding sensors;
a plurality of sub power supply paths, each of which mutually connects the power supply paths of the energization systems; and
a semiconductor switch which is provided for each of the sub power supply paths and which, between two different energization systems, when a first energization system, which is one of the two different energization systems, exhibits an abnormality indicating a drop in a voltage of the power supply supplied to the corresponding sensors, electrically connects the power supply path in the first energization system with the power supply path in a second energization system, which is the other one of the two different energization systems.