Patent ID: 11942881
Assignee: HL MANDO CORPORATION
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H | IPC H

Claim 4:
5. A motor parameter measuring method, comprising:
receiving a motor torque of a motor rotated by an external force;
calculating a motor constant based on the motor torque; and
controlling an inverter connected with the motor to form a closed circuit, in which multiple phases of the motor are connected to each other, by simultaneously turning on a high-side switching element or a low-side switching element for each phase of the inverter, and calculating a parameter of the motor based on a current generated by the rotating motor in the closed circuit, in which the multiple phases of the motor are connected to each other,
wherein the calculating of the motor constant comprises calculating the motor constant with a synchronous coordinate system d-axis current fixed to 0.