Floating wind energy harvesting apparatus with braking arrangement, and a method of controlling a rotational speed of the apparatus

A method of controlling a rotational speed of a wind energy harvesting apparatus floating in a body of water, said wind energy harvesting apparatus comprising:

• an elongated wind turbine body extending along a longitudinal wind turbine body axis to be partly below a surface of said body of water;
• at least one blade attached to said wind turbine body for converting wind energy to rotation of the wind turbine body around the longitudinal wind turbine body axis;
• and
• an energy converter coupled to said wind turbine body for converting the rotation of said wind turbine body to electrical energy,
• wherein said method comprises the steps of:
• providing a braking arrangement comprising an inlet, an outlet, and a water moving member coupled to said wind turbine body for converting kinetic energy of the rotation of the wind turbine body around the longitudinal wind turbine body axis to movement of water that is in contact with said water moving member from said inlet to said outlet;
• and
• controlling access of water from said body of water to said water moving member.