Wind turbine and method of deicing wind turbine blade

A wind turbine, comprising:

• a rotor including a plurality of blades;
• and
• a deicing unit,
• wherein said deicing unit performs a deicing operation only on one or more of said plurality of blades, which has an azimuth angle within a predetermined range, and
• said predetermined range is within a range from 90 to 270 degrees,
• wherein said deicing unit includes:
• a pitch angle controller independently controlling rotations of said plurality of blades around respective pitch axes;
• and
• an acoustic generator provided on a tower supporting said rotor,
• wherein, in said deicing operation, said pitch angle controller holds said one or more of said plurality of blades in a fine state or an inversion state in which the pitch angle thereof differs in 180 degrees from that of the fine state, and
• wherein said acoustic generator outputs acoustic wave to said one or more of said plurality of blades.