MONITORING DEVICE FOR PITCH SYSTEMS OF WIND ENERGY SYSTEMS
First Claim
1. A wind energy installation, comprising:
- a rotor including at least one blade;
a generator configured to be driven by the rotor to produce electrical energy;
a pitch device configured to vary the at least one blade of the rotor, the pitch device including a power supply unit with a battery and an actuating drive; and
a monitoring unit including a load module configured to switch the actuating drive between an operating mode and a test mode, wherein, in the test mode, the actuating drive forms a preselectable defined load for the battery.
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Accused Products
Abstract
A wind energy installation, monitoring device, and method. An exemplary wind energy installation includes a rotor including at least one blade and a generator configured to be driven by the rotor to produce electrical energy. The installation also includes a pitch device configured to vary the at least one blade of the rotor. The pitch device includes a power supply unit with a battery, an actuating drive, a monitoring unit, and a load module configured to switch the actuating drive between an operating mode and a test mode. In the test mode, the actuating drive forms a preselectable defined load for the battery. Accordingly, a high and reproducible load not dependent upon environmental conditions may be applied to conduct a stress test, even during ongoing operation.
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Citations
20 Claims
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1. A wind energy installation, comprising:
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a rotor including at least one blade; a generator configured to be driven by the rotor to produce electrical energy; a pitch device configured to vary the at least one blade of the rotor, the pitch device including a power supply unit with a battery and an actuating drive; and a monitoring unit including a load module configured to switch the actuating drive between an operating mode and a test mode, wherein, in the test mode, the actuating drive forms a preselectable defined load for the battery. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. A monitoring device for a pitch device for wind energy installations having a battery and an actuating drive, the monitoring device comprising:
a load control module configured to switch the actuating drive between an operating mode and a test mode, wherein, in the test mode, the actuating drive forms a preselectable defined load for the battery.
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18. (canceled)
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19. A method for monitoring a pitch device for wind energy installations, the pitch device having a battery and an actuating drive, the method comprising:
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switching the actuating drive from an operating mode to a test mode; using the actuating drive under a defined load for the battery during the test mode; and monitoring a voltage of the battery during the test mode.
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20. (canceled)
Specification