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- W2359999702 abstract "The control strategy of direct-drive permanent-magnet synchronous wind power system during grid fault is proposed.The detection method based on the second-order generalized integrator closed-loop is adopted for grid voltage drop to precisely obtain the grid voltage fault signal,positive-sequence component amplitude and phase angle.The grid voltage fault signal is sent to the variable pitch actuator to rapidly adjust the pitch angle and shield part of the input power for improving system LVRT(Low-Voltage Ride-Through) ability.The LVRT control strategies of direct-drive wind power system during grid voltage drop are explored for realizing the quick and smooth transformation of normal operating modes.Before failure,the grid-side converter operates with unity power factor to keep DC-side voltage constant;after failure,it operates in STATCOM mode,providing the dynamic reactive power support according to the detected magnitude and phase angle of grid-voltage positive-sequence component.The super-capacitor-based bi-directional DC-DC converter is applied in the DC-link protection circuit to quickly maintain the DC-link voltage stable." @default.
- W2359999702 created "2016-06-24" @default.
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- W2359999702 date "2012-01-01" @default.
- W2359999702 modified "2023-09-26" @default.
- W2359999702 title "Control strategy of low-voltage ride-through for direct-drive wind power generation system" @default.
- W2359999702 hasPublicationYear "2012" @default.
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