Title:
MOTOR CONTROL DEVICE, MOTOR CONTROL METHOD, AND PROGRAM
Document Type and Number:
Japanese Patent JP2022157866
Kind Code:
A
Abstract:
To realize an appropriate voltage limit by suppressing influence caused by a phase difference between a voltage command vector and an output voltage vector.SOLUTION: A motor control device comprises: first generation means for generating a two-phase current command value for controlling an AC motor on the basis of a torque command value; first conversion means for converting the two-phase current command value into a three-phase voltage command value; second conversion means for generating a three-phase duty signal by performing a vector conversion on the basis of the three-phase voltage command value; and second generation means for generating a control signal for supplying a source voltage to the AC motor via an inverter on the basis of the three-phase duty signal. The second conversion means limits a norm of a vector of the three-phase voltage command value with a limit value of a voltage limit hexagon corresponding to the source voltage of the inverter, which is determined according to a phase of the three-phase voltage command value.SELECTED DRAWING: Figure 4
Inventors:
UKAI NOBUO
Application Number:
JP2021062334A
Publication Date:
October 14, 2022
Filing Date:
March 31, 2021
Export Citation:
Assignee:
NSK LTD
International Classes:
H02P27/06; H02P21/22
Attorney, Agent or Firm:
Patent business corporation glory patent office