MOD-CMS: Model- and sensor-based condition monitoring system for wind turbines

For a new type of condition monitoring system (CMS), a functional prototype will be explored which monitors several components of a wind turbine in a holistic approach and detects faults and damage as early and as precisely as possible. The investigations are based on a model-based observer structure (combination of deterministic and stochastic model descriptions). The models are supported by inertial measurement units (rotational speed and acceleration sensors) from the field of aviation which are optimised for the measurement and control of dynamic processes and cover a wide frequency range. The results of the investigation acquired in real-time simulations and field tests are to serve as the basis for the future use of this new, integrated concept in wind turbines in conjunction with preventative maintenance methods and for the detailed investigation of the causes of wind turbine failures.

Parallel to the development of mathematical observer models and CMS/SHM algorithms, a sensor system consisting of several inertial rotational speed and acceleration sensors is being set up. After the whole system has been integrated, real-time simulations will be undertaken to verify them with respect to higher quality models and field tests on a research installation. The project concludes with the evaluation and documentation of the findings gained plus an outlook.