Wind turbine system with multiple rotors

A method for operating a wind turbine system, the wind turbine system comprising:

• a plurality of wind turbine modules mounted to a support structure including a tower, wherein each of the plurality of wind turbine modules comprises:
• a rotor,
• a power generation system driven by the rotor, and
• a rotor blade pitch adjustment system for pitching of a plurality of rotor blades;
• the method comprising:
• receiving load data (s1, s2, s3) associated with the plurality of wind turbines modules and/or the support structure,
• connecting a control system to said input arrangement for receiving load data,
• determining a lift command for a particular wind turbine module (2′) of the plurality of wind turbines modules, and
• applying the lift command to the corresponding rotor blade pitch adjustment system of said particular wind turbine module (2′) to create a lift force (F_up) in the opposite direction of gravity on the said particular wind turbine module mounted on the support structure.

A computer program product having instructions which, when executed cause a computing device or a computing system to perform an operation for operating a wind turbine system, the wind turbine system comprising:

• a plurality of wind turbine modules mounted to a support structure including a tower, wherein each of the plurality of wind turbine modules comprises:
• a rotor,
• a power generation system driven by the rotor, and
• a rotor blade pitch adjustment system for pitching of a plurality of rotor blades coupled to the rotor;
• the operation comprising:
• receiving load data associated with the plurality of wind turbines modules and/or the support structure,
• connecting a control system-to said input arrangement for receiving load data,
• determining a lift command for a particular wind turbine module of the plurality of wind turbines modules, and
• applying the lift command to the corresponding rotor blade pitch adjustment system of said particular wind turbine module to create a lift force in the opposite direction of gravity on the said particular wind turbine module mounted on the support structure.