Provided is a lubrication system for a drive train of a wind turbine including a main oil tank including a lubrication liquid, for lubricating the drive train when the wind turbine has connection to a grid and a main reservoir which is separate from the main oil tank and contains lubrication liquid for the drive train when the wind turbine has no connection to the grid. The main reservoir includes a first reservoir containing a first amount of lubrication liquid for at least a first component of the drive train and a second reservoir including a second amount of lubrication liquid for at least a second component of the drive train. The lubrication system is configured to supply the oil from the main reservoir to the drive train when the wind turbine has no grid connection for creating an oil sump in at least the second component of the drive train.

A planetary gearbox for a wind power installation includes a planetary carrier having a first and second carrier cheeks, planetary gears mounted rotatably on the first and second carrier cheeks via bearing pins, respectively, an internal gear meshing with the planetary gears, with an assembly clearance being configured between a cheek external diameter of the first and second carrier cheeks and an internal diameter of the internal gear, and a planetary carrier spider configured to position the first and second carrier cheeks at a defined spacing with respect to one another. The planetary carrier spider has a radially outwardly pointing outer side which extends at a greater spaced-apart relation radially inward from a radially inner tip circle radius of an internal toothing system of the internal gear than the first and second carrier cheeks and which is arranged radially outside with respect to an internal diameter of the planetary gears.

A planetary gearbox for a wind power installation includes a planetary carrier having a first and second carrier cheeks, planetary gears mounted rotatably on the first and second carrier cheeks via bearing pins, respectively, an internal gear meshing with the planetary gears, with an assembly clearance being configured between a cheek external diameter of the first and second carrier cheeks and an internal diameter of the internal gear, and a planetary carrier spider configured to position the first and second carrier cheeks at a defined spacing with respect to one another. The planetary carrier spider has a radially outwardly pointing outer side which extends at a greater spaced-apart relation radially inward from a radially inner tip circle radius of an internal toothing system of the internal gear than the first and second carrier cheeks and which is arranged radially outside with respect to an internal diameter of the planetary gears.

A method for operating a drive train having a power generator, a mechanical power transmission device, and a power receiver wherein the power transmission device is monitored to detect mechanical damage and/or the development of mechanical damage to the power transmission device, wherein detected damage and/or detected damage development is localized and the power generator, the power transmission device, and/or the power receiver are/is controlled such that a mechanical load at the localized damage location and/or damage development location is selectively reduced. A program product including program code sections with which such a method is feasible when the program product is executed on a programmable controller, a computer, or other programmable device.

A main bearing unit for supporting the rotor shaft of a wind turbine, including a rolling bearing having an inner ring, an outer ring and a rolling element arrangement received between the outer and inner ring and a coupling arrangement which is designed to couple the rotor shaft to an output shaft of the wind turbine at least indirectly and so as to transmit torque. The rotor shaft is coupled to one of the outer and inner ring so as to transmit torque. The coupling arrangement is coupled so as to transmit torque to the one of the outer and inner ring as the rotor shaft.

A main bearing unit for supporting the rotor shaft of a wind turbine, including a rolling bearing having an inner ring, an outer ring and a rolling element arrangement received between the outer and inner ring and a coupling arrangement which is designed to couple the rotor shaft to an output shaft of the wind turbine at least indirectly and so as to transmit torque. The rotor shaft is coupled to one of the outer and inner ring so as to transmit torque. The coupling arrangement is coupled so as to transmit torque to the one of the outer and inner ring as the rotor shaft.

The disclosed technology provides a system and methods for transforming kinetic energy from wind and solar energy from sunlight into three phase electrical energy for local use and available to supply to electrical grids. The system includes a solar panel system and a wind system, which through a gearbox translates kinetic energy from the wind into hydraulic energy in a hydraulic circuit. One or more generators are coupled with the hydraulic circuit to translate the hydraulic energy into three phase electrical energy. In embodiments, a pump motor runs off of a rechargeable battery to supply hydraulic energy to one of the generators when the wind is insufficient to provide sufficient hydraulic energy to the generator. The rechargeable battery may be recharged by diverting energy from, for example, the solar panel system.

A wind turbine control apparatus, method and non-transitory computer-readable medium are disclosed. The wind turbine control apparatus comprises a generator connected to a wind turbine with a drive train. The drive train comprises a rotor, a low speed shaft, a gear box, a high speed shaft, and a controller module. The controller module is configured to obtain a maximum power within a large range of varying wind velocities by operating the rotor at a neural network determined optimal angular speed for the current wind velocity.

A wind turbine control apparatus, method and non-transitory computer-readable medium are disclosed. The wind turbine control apparatus comprises a generator connected to a wind turbine with a drive train. The drive train comprises a rotor, a low speed shaft, a gear box, a high speed shaft, and a controller module. The controller module is configured to obtain a maximum power within a large range of varying wind velocities by operating the rotor at a neural network determined optimal angular speed for the current wind velocity.

A self-aligning interface for assembling a powertrain housing 210 of a wind turbine onto a support base 220 is provided. The support base 220 comprises a support surface 230 and the powertrain housing 210 comprises a housing surface 240. The support surface 230 and the housing surface 240 are configured to be in contact after assembly. The self-aligning interface comprises: one or more protrusions 250 on the support surface 230, wherein the one or more protrusions 250 comprises one or more walls 260 which are inclined with respect to the support surface 230; and one or more recesses 270 on the housing surface 240. In addition or alternatively, the self-aligning interface comprises one or more protrusions on the housing surface, wherein the one or more protrusions comprises one or more walls which are inclined with respect to the housing surface, and one or more recesses on the support surface. The one or more protrusions 250 are complementary in size and shape to respective ones of the one or more recesses 270, such that, during assembly of the powertrain housing 210 onto the support base 220, the one or more protrusions 250 act as a guide for the one or more recesses 270, and the one or more protrusions 250 fit directly into the respective one or more recesses 270, to enable direct contact between the support surface 230 and the housing surface 240.