Wind turbine for generating electric power

A wind turbine generator for the generation of electrical power through incident air flow on a rotor rotating around a rotor axis with multiple rotor blades being coupled via a rotor shaft to a generator, comprising:

• a main gear box comprising a drive shaft rotationally coupled to the rotor shaft, an output shaft rotationally coupled to a generator input shaft, and an intermediate shaft, wherein the main gear box is configured to translate a rotation speed of the rotor shaft to a rotation speed of a generator input shaft and a rotation speed of the intermediate shaft;
• a lubrication pump configured to feed lubricant to components that are subject to wear and tear during normal operation of the wind turbine generator;
• an emergency lubrication pump comprising an input shaft and configured to feed lubricant to the components that are subject to wear and tear;
• an emergency torque transmission unit configured to translate one of the rotation speed of the rotor shaft, the rotation speed of the intermediate shaft, and the rotation speed of the generator input shaft to a rotation speed of the input shaft of the emergency lubrication pump;
• and
• a coupling unit having an input shaft coupled to an output of the emergency torque transmission unit and an output shaft coupled to the input shaft of the emergency lubrication pump, the coupling unit being configured to selectively activate and deactivate the emergency lubrication pump by selectively coupling and decoupling, respectively, the input shaft of the emergency lubrication pump to and from the emergency torque transmission unit,
• wherein the emergency lubrication pump is deactivated under normal operation of the wind turbine generator and is activated upon deactivation of the lubrication pump.

A wind turbine generator for the generation of electrical power through incident air flow on a rotor rotating around a rotor axis with multiple rotor blades being coupled via a rotor shaft to a generator, comprising:

• a main gear box comprising a drive shaft rotationally coupled to the rotor shaft, an output shaft rotationally coupled to a generator input shaft, and an intermediate shaft, wherein the main gear box is configured to translate a rotation speed of the rotor shaft to a rotation speed of the generator input shaft and a rotation speed of the intermediate shaft;
• a lubrication pump configured to feed lubricant to components that are subject to wear and tear during normal operation of the wind turbine generator;
• an emergency lubrication pump having an input shaft and configured to feed lubricant to the components that are subject to wear and tear;
• an emergency torque transmission unit configured to translate one of the rotation speed of the drive shaft, the rotation speed of the output shaft and the rotation speed of the intermediate shaft to a rotation speed of the input shaft of the emergency lubrication pump;
• and
• a coupling unit having an input shaft coupled to one of the drive shaft, the output shaft and the intermediate shaft and an output shaft coupled to an input of the emergency toque transmission unit, the coupling unit being configured to selectively activate and deactivate the emergency lubrication pump by selectively coupling and decoupling, respectively, the emergency torque transmission unit to and from the one of the drive shaft, the output shaft and the intermediate shaft,
• wherein the emergency lubrication pump is deactivated under normal operation of the wind turbine generator and is activated upon deactivation of the lubrication pump.