Method and device for providing motor stator current value

Abstract

The present invention discloses a method and device used for providing motor stator current values, wherein the method comprises the steps of based on an equation formed on the condition that the stator current values, the motor electromagnetic torques and the motor parameters satisfy the motor performance requirements, calculating the stator current values respectively corresponding to the rotating speed points in a motor constant torque area and a motor constant power area under different torques, providing the calculated stator current values to a motor control module, so that the motor control module utilizes the queried stator current values to control a motor. The motor control module can obtain the accurate stator current values respectively corresponding to the rotating speed points in a motor full-rotating speed section under the different torques, so that the motor can be controlled more accurately.

Description

technical field [0001] The invention relates to the field of motors, in particular to a method and device for providing an electronic constant current value of a motor. Background technique [0002] In the vector control process of permanent magnet synchronous motor based on rotor flux orientation, the output torque and power of the motor can be controlled by controlling the values ​​of the excitation component and torque component after the decoupling of the stator current of the motor. The given stator current value has a very important impact on the motor torque and operating efficiency. [0003] In the related art, the motor stator current value is generally calibrated manually through a motor control performance experiment. However, the manually calibrated stator current value is only used to meet the motor control performance under the experimental conditions, and will be affected by the personal ability of the debugger and the accuracy of the bench body. Therefore, ...

AI Technical Summary

Problems solved by technology

However, the manually calibrated stator current value is only used to meet the motor control performance in the experimental situation, and will be affected by the personal ability of the debugger and the accuracy of the bench body

Therefore, providing the motor control module with a manually calibrated motor stator current value cannot meet the needs of accurately controlling the motor, which may cause the motor to deviate from the optimal operating point and reduce the operating efficiency of the motor

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