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Efficient monitoring of wind turbines

Holistic condition monitoring from Bosch Rexroth keeps wind turbine operators in the loop

Holistic condition monitoring from Bosch Rexroth keeps wind turbine operators in the loop

Cost of energy (CoE) is the key measure of wind turbine efficiency, as well as being a top priority for turbine operators. Condition monitoring systems make an important contribution in this regard, enabling condition-oriented maintenance to reduce operating costs, and therefore the CoE, in a sustainable manner. ACoS, the Advanced Condition Monitoring System from Rexroth, is a world first, combining condition monitoring for all components in the power train of a wind turbine and intelligently networking measurement data from different sensors. A standardized operating interface for all sub-systems speeds up the analysis process and reduces the need for training.

Building on many years of experience with the BLADEcontrol rotor blade monitoring system, Bosch Rexroth AG has now joined forces with technology company DMT GmbH & Co. KG to develop the holistic ACoS condition monitoring system. The system combines monitoring for all relevant function groups by means of a standardized and continuous connection to a control desk, thereby reducing the need for hardware. By synchronizing the data measurement process, the detection sensitivity and data quality are also increased.

The universal system philosophy enables easier operation while simultaneously increasing the efficiency and transparency of the monitoring process, allowing a considerably greater number of turbines to be covered by each monitoring expert. The system reduces turbine monitoring costs, while also improving the ability to plan for maintenance operations. Operators of onshore and offshore wind turbines are thereby able to reduce their CoE on a long-term basis over the entire service life of the turbine.

Proven measurement and analysis strategies are combined to form a holistic monitoring strategy on an open platform composed of individual function modules. All measurements are synchronized with each other. By combining monitoring of the rotor and power train, abnormalities on one component can be checked and verified by means of cross-comparison with the measurement data of the other component.

In addition to holistic turbine monitoring, ACoS includes GL-certified ice detection on the rotor blades. This option eliminates on-site inspections of wind turbines to ensure that they are free of ice – a measure that is still required in many cases – and thereby allows the turbine to be restarted safely and promptly once the ice is no longer present.

About Bosch Rexroth:

Economical, precise, safe, and energy efficient: drive and control technology from Bosch Rexroth moves machines and systems of any size. The company bundles global application experience in the market segments of Mobile Applications, Machinery Applications and Engineering, Factory Automation, and Renewable Energies to develop innovative components as well as tailored system solutions and services. Bosch Rexroth offers its customers hydraulics, electric drives and controls, gear technology, and linear motion and assembly technology all from one source. With locations in over 80 countries, more than 36,700 associates generated sales revenue of approximately 5.7 billion euros ($7.6 billion) in 2013. To learn more, please visit

About Bosch:

In the U.S., Canada and Mexico, the Bosch Group manufactures and markets automotive original equipment and aftermarket solutions, industrial drives and control technology, power tools, security and communication systems, packaging technology, thermotechnology, household appliances, healthcare telemedicine and software solutions. Having established a regional presence in 1906, Bosch employs 24,600 associates in more than 100 locations, with consolidated sales of $10.4 billion in 2013. For more information, visit , and .

The Bosch Group is a leading global supplier of technology and services. In 2013, its roughly 281,000 associates generated sales of 46.1 billion euros ($61.2 billion). Its operations are divided into four business sectors: Automotive Technology, Industrial Technology, Consumer Goods, and Energy and Building Technology. The Bosch Group comprises Robert Bosch GmbH and its more than 360 subsidiaries and regional companies in some 50 countries. If its sales and service partners are included, then Bosch is represented in roughly 150 countries. This worldwide development, manufacturing, and sales network is the foundation for further growth. In 2013, Bosch invested some 4.5 billion euros ($6.0 billion) in research and development and applied for some 5,000 patents worldwide. The Bosch Group’s products and services are designed to fascinate, and to improve the quality of life by providing solutions which are both innovative and beneficial. In this way, the company offers technology worldwide that is “Invented for life.” Additional information on the global organization is available online at , , and .


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