146 Complementary Areas of Expertise > Wind Power From wind to electrical power The Nacelle – Wind Turbine Learning System is a complete scaled-down version of commercial wind turbine nacelles, making it an excellent substitute for expensive actual equipment. Nacelle – Wind Turbine Learning System Operation and Maintenance of Wind Turbines The learning system consists of a complete drive train that includes the main shaft, a gearbox with a transparent side cover, speed sensors, a hydraulic brake, and an asynchronous generator. The yaw system is fully operational and features a 61 cm (24 in) slewing bearing, a gear motor, a drive, a position sensor, and fail-safe hydraulic brakes. A manual hydraulic pump and an accumulator, as found in real-world wind turbines, are also included. A PLC controls the different functions of the nacelle and is located in an electrical enclosure together with all the other electrical components. Simulating reality A wind vane and an anemometer are located in a transparent enclosure on top of the training system to monitor wind speed and wind direction. Although they are not measuring actual wind, the control system managed by the user simulates the process, causing the weather sensors to react and send signals to the control system which take the simulated parameters into account. An industrial electrical panel The lockable electrical panel contains all the electrical supply, distribution, and control functionality for the learning system: contactors, variable-frequency drives, breakers, fuses, power supplies, and remote inputs/outputs for the PLC. Grid-tied power generator The generator allows the induction generator of the learning system to be connected to the grid and to return power proportional to the wind simulation in the system. It includes a soft starter, an overload, switchable compensation capacitors, and a power meter that allows the user to monitor several parameters of the power returned to the grid (VAR, W, VA, power factor, etc.). → Video
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