Method for obtaining balanced and non-distortion total output current of double-fed window power system under the condition of imbalanced harmonic-distortion grid voltage

摘要: The invention discloses a method for obtaining balanced and non-distortion total output current of double-fed induction window power system with series grid-side converter under the condition an imbalanced harmonic-distortion grid voltage relates to control over converter, parallel motor-side converter. A controller adopted by can achieve rapid restraint negative sequence stator, fifth-harmonics component seventh-harmonic component, therefore safe stable operation motor is guaranteed. reference order positive synchronous rotation coordinate axis comprises fundamental wave, component. accurate adjustment direct-current frequency-doubling alternating-current sixfold-frequency so that it guaranteed free distortion, quality electric energy which connected effectively improved.