Exact torque measurement in multi-MW wind turbine check benches (WTTBs) is crucial for determining the effectivity of wind turbines. Nevertheless, torque measurement in WTTBs is just not but traceable to nationwide requirements resulting from its enormous magnitude; therefore, the measurement uncertainty will not be but recognized. Furthermore, most torque measuring devices in WTTBs do not measure torque straight at the wind turbine’s rotor hub (Zhang and Neshati, 2018), the place it’s required (Fig. 1). Torque as a mechanical enter for a direct efficiency determination is normally to be measured immediately at first of the wind turbine’s drive train, which is the rotor hub flange. Between the torque measurement (Fig. 1 – torque transducer) and the rotor hub flange, vital losses happen, which haven’t been totally thought-about up to now.

Within the scope of this subproject to validate check benches, an ENERCON nacelle has been arrange on the Fraunhofer IWES test bench in Bremerhaven. Following the primary profitable pre-exams based on TR3 and successful testing of HiL test bench operation, стенды для турбин Turbolaber this venture can now get began correctly. The purpose is to show that the grid-facet loads might be realistically simulated by the digital 36,000 V medium-voltage grid within the Fraunhofer DyNaLab. If this have been the case, it can be doable to determine the electrical properties of a wind turbine on a check bench with the same degree of reliability as in the sector.

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