Double-fed wind power generation high-voltage through control structure, and generator and generation system providing with double-fed wind power generation high-voltage through control structure

The invention relates to a double-fed wind-power generation high-voltage through control structure, wherein a control structure of a rotor side virtual resistor is formed by guiding a feedback factor Ra into a current feedback channel of a rotor, stacking a product obtained by multiplying feedback current of a d shaft and a q shaft of the rotor on output of a rotor excitation and torque current regulator in rotor excitation control of a double-fed wind power generation. The double-fed wind-power generation high-voltage through control structure has the advantages of reducing the impaction of current and electromagnetic torque of the rotor of a generator when the voltage of power grid suddenly rises and avoiding frequent operation of a crowbar circuit, wherein the virtual resistor can flexibly change according to suddenly rising extent of the power grid rotor and current rotation speed, and when voltage of the rotor is ensured to be not over than an allowable value of an converter rotor, the oscillation of the current and the electromagnetic torque of the rotor is restrained to a maximum extent, so that the optimal control of the generator is realized when the voltage of the power grid rises suddenly. The invention further relates to a double-fed wind power generator and a double-fed wind power generation system with the double-fed wind-power generation high-voltage through control structure.