Title:
MOTOR DRIVE DEVICE
Document Type and Number:
Japanese Patent JP2018143055
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To suppress variation in output torque of a motor due to disturbance, while preventing rapid change in the output torque of the motor when switching between a rectangular-wave control mode and another control mode.SOLUTION: When an inverter is controlled in a rectangular-wave control mode, an average value of torque outputted from a motor is calculated based on a current in each phase of the motor as well as a rotational angle of the motor detected by a rotational angle detection sensor. Then, a torque variation amount of the motor is calculated with the use of a rotational speed of the motor calculated based on input/output power inputted into/outputted from a power storage device as well as the rotational angle detected by the rotational angle detection sensor. Output torque of the motor is estimated by using the average value and the torque variation amount. With the use of the output torque thus estimated, the inverter is controlled such that it may be driven at target torque.SELECTED DRAWING: Figure 4
Inventors:
KOYANAGI HIROYUKI
Application Number:
JP2017036590A
Publication Date:
September 13, 2018
Filing Date:
February 28, 2017
Export Citation:
Assignee:
TOYOTA MOTOR CORP
International Classes:
H02P23/04; H02M7/48; H02P6/10; H02P27/06
Attorney, Agent or Firm:
Aitec International Patent Office