Current harmonic suppression device and method of motor and motor

Abstract

The invention discloses a current harmonic suppression device and method of a motor and the motor. The device comprises a first control module and / or a second control module, and further comprises: acontrol circuit used for controlling the motor. The control circuit of the motor comprises a rotating speed outer loop control circuit and a current inner loop control circuit, wherein the first control module is used for suppressing current harmonics in the rotating speed outer loop control circuit and / or the current inner loop control circuit by adopting a mode of optimizing parameters of a PI controller in a control circuit of the motor; and / or the second control module is used for suppressing current harmonics in the rotating speed outer loop control circuit and / or the current inner loop control circuit by adopting a mode of adding a time delay link and adding phase compensation to a repetitive controller in the control circuit of the motor. According to the scheme, the problem that the current harmonic suppression capacity of the permanent magnet synchronous motor is weak can be solved, and the effect of improving the current harmonic suppression capacity of the permanent magnet synchronous motor is achieved.

Description

technical field [0001] The invention belongs to the technical field of motors, and in particular relates to a current harmonic suppression device, a motor and a current harmonic suppression method thereof, in particular to a device for realizing a high-precision control strategy for current harmonic suppression of a permanent magnet synchronous motor, which has the permanent magnet The present invention relates to a permanent magnet synchronous motor of a high-precision control strategy implementation device for current harmonic suppression of a synchronous motor, and a method for suppressing current harmonics of the permanent magnet synchronous motor. Background technique [0002] In recent years, permanent magnet synchronous motors have been widely used due to their compact structure, simple maintenance, no need for slip rings, high efficiency, good reliability, long life, and the use of permanent magnet materials for excitation without electric excitation to reduce losses....

AI Technical Summary

Problems solved by technology

[0004] The object of the present invention is to provide a current harmonic suppression device, method and motor for a motor to solve the problem that the current harmonic suppression ability of the permanent magnet synchronous motor is relatively weak, and to improve the current of the permanent magnet synchronous motor. Effect of Harmonic Suppression Capability

Images