Patent ID: 11936309
Assignee: MITSUBISHI ELECTRIC CORPORATION
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  B | IPC B  H

Claim 0:
1. A permanent-magnet-synchronous electric motor control device comprising:
a reference voltage value calculation circuitry to calculate a reference voltage value on the basis of power supply voltage;
an output voltage value calculation circuitry to calculate an output voltage value on the basis of a voltage command;
a current weakening command calculation circuitry to calculate a current weakening command being a d-axis current command for flux weakening control on the basis of the reference voltage value and the output voltage value;
a voltage command calculation circuitry to calculate the voltage command on the basis of the current weakening command; and
a power converter for supplying power to a permanent-magnet-synchronous electric motor on the basis of the voltage command, wherein
the current weakening command calculation circuitry calculates the current weakening command in which a high-frequency component is amplified on the basis of a difference between the reference voltage value and the output voltage value using a filter that amplifies a high-frequency component.