Wind power generation apparatus, tower and method for suppressing tower shadow effect of tower

摘要

#$%^&*AU2018250454A120190328.pdf#####ABSTRACT A wind power generation apparatus, a tower and a method for suppressing a tower shadow effect of the tower. The tower is provided with suction through holes extending through a circumferential wall thereof, and the suction through holes are distributed in a 5 circumferential direction of the tower; the tower is further provided with a suction apparatus, and the suction apparatus can perform suction to the suction through holes from outside to inside. With the tower and the method, when the suction through holes at a windward side are suctioned, the adverse influence of the tower shadow effect can be weakened or eliminated, a service life of a pitch varying bearing can be prolonged, a noise can be reduced 10 and a wind energy utilization coefficient can be improved. When the suction through holes at a position of a bypassing flow detachment are suctioned, vortex-induced vibrations can also be suppressed. In addition, suction intensity may be adjusted at any time during suction according to practical situations, which has higher flexibility. When the suctioned airflow is discharged to the inside of the tower, functions of cooling by heat exchange, blocking the 15 outside rainwater, sand, dust and the like from entering a flow guiding hood or a hub can also be performed.