METHOD AND SYSTEM FOR CONTROLLING ROTATIONAL SPEED RESONANT FREQUENCY CROSSING OF FLEXIBLE TOWER WIND TURBINE

A method and a system for controlling the rotational speed resonant frequency crossing of a flexible tower wind turbine. The method comprises: acquiring basic calculation data; processing acceleration ass of the left-right movement at the top of the tower; obtaining the root mean square of accelerat...

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Bibliographische Detailangaben
Hauptverfasser:	SUN, Yong, CHEN, Qi, SHI, Xiaoming, CHENG, Chenguang, YING, You, YANG, Jing
Format:	Patent
Sprache:	chi ; eng ; fre
Schlagworte:	BLASTING HEATING LIGHTING MACHINES OR ENGINES FOR LIQUIDS MECHANICAL ENGINEERING OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR PRODUCING MECHANICAL POWER WEAPONS WIND MOTORS WIND, SPRING WEIGHT AND MISCELLANEOUS MOTORS
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Beschreibung
Zusammenfassung:	A method and a system for controlling the rotational speed resonant frequency crossing of a flexible tower wind turbine. The method comprises: acquiring basic calculation data; processing acceleration ass of the left-right movement at the top of the tower; obtaining the root mean square of acceleration ass0 of the left-right movement at the top of the tower after a filter of an nth control period; and carrying out different running states according to a running flag bit A. The system comprises a tower modal online identification system (1), tower vibration sensors (2), and a speed measuring encoder (3), which are respectively connected to a system (4) for controlling the rotational speed resonant frequency crossing of a flexible tower wind turbine, the tower vibration sensors are uniformly installed on the tower from top to bottom. In the method and the system, adaptive control of a turbine rotational speed jump deviation value, a vibration amplitude, and a damping coefficient is achieved and the load of a fl