AC-AC frequency-conversion wind power generating system for semi-direct driving sub-intermediate speed cage type rotor
A technology of wind power generation system and cage rotor, which is applied in wind power generation, control of generators through magnetic field changes, and AC network to reduce harmonics/ripples, etc. To solve the problem of overcapacity, reduce system loss and improve unit utilization
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[0031] Such as figure 1 , 2 As shown, the semi-direct drive sub-medium speed cage rotor AC-AC variable frequency wind power generation system of the present invention includes n cage rotor asynchronous generator units 1, three-phase AC-AC converter 2, Y Yanbian connection step-up transformer 3. The adjustable self-excitation capacitor group 4 and the unified time reference unit controller 5 constitute the same sub-system, in which the cage rotor asynchronous generator unit 1 is connected to the three-phase alternating current converter 2 and the adjustable self-excitation capacitor group 4 is connected, the three-phase alternating current converter 2 is connected with the Y Yanbian connection step-up transformer 3, and the output terminals of the unified time reference unit controller 5 are respectively connected to the three-phase alternating current converter 2 and the adjustable self-excitation capacitor group 4 At the input end, n unified time reference unit controllers 5 ar...
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