Doubly fed wind power generator control structure under asymmetric sudden rise of power grid voltage
A technology for wind turbines and grid voltage, applied in the direction of reducing/preventing power oscillation, etc., can solve the problems of unbalanced grid voltage, high converter voltage, and converter safety threats, so as to suppress oscillation and improve dynamic response. ability, the effect of enhancing the ability to operate without interruption
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[0021] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.
[0022] Such as figure 1 As shown in , it is a doubly-fed wind turbine control structure diagram based on active damping and dual synchronous rotating coordinate system under asymmetric grid voltage surge provided by the preferred embodiment of the present invention.
[0023] The rotor positive sequence current coordinate transformation unit according to the slip angle (in is the positive sequence grid voltage angle, θ r is the electrical angle of the rotor) and the three-phase AC current i on the rotor side of the doubly-fed wind turbine ra i rb i rc Rotor d-axis positive sequence current t...
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