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This paper presents a new control scheme for minimizing the torque ripple of the generator under unbalanced grid voltage for wind turbine systems using doubly-fed induction generators, where the negative sequence component of the rotor current is utilized. It is found that the generator torque ripples are related with the reactive power component. Increase of stator active power ripples caused by...
In this paper, a high-performance control scheme of the PWM converters under nonideal source voltage is proposed. To reduce the harmonic contents in the converter input current due to distorted source voltage, additional current control loops are added to the basic controller. These control loops can eliminate the 5th and 7th order harmonics which are hardly to be done by using filters. To reduce...
In this paper, a novel control method for smoothening the stator active or reactive power ripple components under unbalanced grid voltage for wind power generation using doubly-fed induction generators (DFIG) is proposed. The negative sequence component of the rotor current is used to reduce the active and reactive power ripples, which is extracted by band pass filters. It is shown that reducing the...
In this paper, a novel control method for smoothening the stator active or reactive power ripple components under unbalanced grid voltage for wind power generation using doubly-fed induction generators (DFIG) is proposed. The negative sequence component of the rotor current is used to reduce the active and reactive power ripples, which is extracted by band pass filters. It is shown that reducing the...
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