Wind turbine drive control device, wind turbine power supply device, wind power generation device, and control method

A wind turbine power supply device for supplying an electric power to a plurality of drive devices for moving two structures included in a wind power generation device relative to each other, each of the plurality of drive devices including a brake unit that generates a higher braking force as supplied with a higher electric power, the wind turbine power supply device comprising:

• a power supply circuit for supplying an electric power to each of the plurality of drive devices;
• an obtaining unit for obtaining a plurality of information items related to loads occurring between each of the plurality of drive devices and one of the two structures that receives forces generated by the plurality of drive devices;
• and
• a control unit for controlling the power supply circuit in such a manner that, in a state where the power supply circuit is controlled to supply a predetermined electric power to each of the plurality of drive devices, the electric power supplied to the brake unit of at least one first drive device among the plurality of drive devices is increased, based on the plurality of information items obtained by the obtaining unit.

A wind power generation device comprising:

• a plurality of drive devices each including a brake unit, a drive unit, and a transmission unit, the brake unit being configured to generate a braking force for stopping a second structure relative to a first structure, both the first and second structures being included in the wind power generation device, the brake unit being further configured to generate a higher braking force as supplied with a higher electric power, the drive unit being configured to generate a drive force for moving the second structure relative to the first structure, the transmission unit being configured to transmit the braking force and the drive force to the first structure;
• a first power supply unit for supplying a first electric power to the brake unit of each of the plurality of drive devices;
• a second power supply unit for supplying a second electric power to the brake unit of each of the plurality of drive devices, the second electric power being higher than the first electric power;
• a switching unit for switching between a state in which the first electric power is supplied from the first power supply unit to the plurality of drive devices and a state in which the second electric power is supplied from the second power supply unit to the plurality of drive devices;
• an obtaining unit for obtaining a plurality of information items related to loads occurring between each of the plurality of drive devices and one of the two structures that receives forces generated by the plurality of drive devices;
• and
• a control unit for controlling the plurality of drive devices in such a manner that, in a state where the first and second power supply units are controlled to supply a predetermined electric power to each of the plurality of drive devices so as to control the plurality of drive devices such that each of the plurality of drive devices generates a predetermined braking force, the switching unit is controlled to cause the electric power supplied to at least one first drive device among the plurality of drive devices to be increased and cause the electric power supplied to a second drive device other than the at least one first drive device to be reduced, based on the plurality of information items obtained by the obtaining unit, thereby increasing the braking force of the at least one first drive device among the plurality of drive devices and reducing the braking force of the second drive device other than the at least one first drive device.