Compensation method and compensation device for permanent magnet motor
A technology of permanent magnet motor and compensation method, which is applied to the control of electromechanical transmission, control of generator, motor generator control, etc. It can solve problems such as mechanical vibration, compressor speed fluctuation, torque control lag, etc., and reduce vibration , the effect of stabilizing speed
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[0034] The present invention will be described in detail below in conjunction with the embodiments shown in the drawings. However, these embodiments do not limit the present invention, and the structural, method, or functional changes made by those skilled in the art based on these embodiments are all included in the protection scope of the present invention.
[0035] In an embodiment of the present invention, the permanent magnet motor low-speed compensation method and device are applied to refrigerator compressors.
[0036] Such as figure 1 As shown, in an embodiment of the present invention, the permanent magnet motor low-speed compensation method includes:
[0037] S1. Detect the response current of the permanent magnet motor, and calculate the rotor speed and load signal of the permanent magnet motor based on the response current; preferably, first detect the response current of the permanent magnet motor, and then feed back the load signal according to the response current, A...
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