Patent ID: 11881805
Assignee: LS ELECTRIC CO., LTD.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. An interface circuit of a motor driving apparatus, the interface circuit comprising:
a power circuit unit comprising:
an inverter unit for controlling driving of a motor;
a gate driving unit for controlling driving of a gate of the inverter unit;
a relay;
an additional device unit of a cooling fan or a blower for cooling the power circuit unit; and
a second motor control unit (MCU) for controlling the relay and the additional device unit and detecting a state of the additional device unit;

a control panel unit which is located separately from the power circuit unit and comprises a first MCU that receives a detected state of the relay and the additional device unit by directly communicating with the second MCU while controlling the gate driving unit; and
a digital isolator for interfacing the power circuit unit and the control panel unit and that insulates a transmission/reception signal transmitted between the first MCU and the gate driving unit.