Inductance parameter identification method for permanent magnet synchronous motor based on high frequency rotating voltage injection
A permanent magnet synchronous motor, high-frequency rotating voltage technology, used in motor generator control, electronic commutation motor control, control generators, etc. Changes and other problems, to achieve the effect of simple and reliable algorithm, strong versatility
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[0025] Below in conjunction with accompanying drawing, technical scheme of the present invention is described in further detail:
[0026] The present invention is mainly a permanent magnet synchronous motor inductance parameter identification method based on high-frequency rotating voltage injection, which first injects a high-frequency sinusoidal rotating voltage signal into the dq axis, and obtains the amplitude of the high-frequency response current corresponding to the frequency of the dq axis , calculating the dq-axis inductance according to the amplitude of the high-frequency component in the high-frequency response current of the dq-axis.
[0027] The control system used in this identification method mainly includes: three-phase inverter, space vector pulse width modulation unit, photoelectric encoder unit, three-phase stationary-two-phase stationary coordinate transformation unit, two-phase stationary-two-phase rotational coordinate transformation unit , Two-phase rota...
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