CPC H02P 21/22 (2016.02) [H02P 21/14 (2013.01); H02P 27/06 (2013.01); H02P 2207/05 (2013.01)] | 8 Claims |
1. A motor parameter measuring device, comprising:
a torque receiver receiving a motor torque of a motor rotated by an external force;
a motor constant calculator calculating a motor constant based on the motor torque; and
a parameter calculator 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 motor constant calculator calculates the motor constant with a synchronous coordinate system d-axis current fixed to 0.
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