Title:
CONTROL METHOD OF MOTOR, AND CONTROLLER FOR MOTOR
Document Type and Number:
Japanese Patent JP2023077127
Kind Code:
A
Abstract:
To provide a control method of a motor and a controller for the motor capable of reducing the number of current sensors arranged in a three-phase motor, and of excellently performing controlling of the motor.SOLUTION: A control method of a motor comprises the steps of: when DC is converted into AC power by power conversion means to feed the AC power to the motor in an electric vehicle, individually detecting at least a first phase current and a second phase current out of three phase currents using a pair of current detection means in a fixed coordinate system fed to the motor and converting the two detected phase currents into a current conversion value in a rotating coordinate system; and calculating a voltage command value for controlling the power conversion means based on a current command value in the rotating coordinate system required from an electric vehicle side, and the current conversion value. Based on a current ratio of the two detected phase currents, the control method calculates a fluctuation correction amount in the rotating coordinate system, and corrects the current conversion value by using the fluctuation correction amount.SELECTED DRAWING: Figure 2
Inventors:
SAKAI NORIMOTO
FUJIMOTO SATORU
FUJIMOTO SATORU
Application Number:
JP2021190293A
Publication Date:
June 05, 2023
Filing Date:
November 24, 2021
Export Citation:
Assignee:
NISSAN MOTOR
International Classes:
H02P21/22; H02P27/06
Attorney, Agent or Firm:
Patent Attorney Corporation Goto Patent Office