Lead Session Chair:
Stephan Barth, Managing Director, ForWind - Center for Wind Energy Research, Germany
Dennis Bosse (1) F P Stefan Franzen (1) Georg Jacobs (1)
(1) Center for Wind Power Drives, RWTH Aachen University, Aachen, Germany
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Center for wind power drives, advance wtg testing with grid- and wind-hil-modules
To understand and predict the system behavior of modern wind turbine generators (WTG) nowadays it is crucial to advance WTG testing. Compared to field testing, full size ground testing of WTG is much more flexible and especially independent from wind and grid states.
Therefore, several test facilities for full size ground tests have already recognized the demand for realistic and accurate test scenarios to improve reliability of current and future WTG designs.
Main body of abstract
The Center for Wind Power Drives (CWD) pursues a two-stage strategy based on a validated 1 MW test bench demonstrator and an improved 4 MW system test bench that is in operation since end of 2014. This poster seeks to demonstrate the comprehensive capabilities of the two WTG system test benches that are integrated into a multi physical hardware in the loop (HIL) environment. While the HIL Wind emulates all mechanical wind loads the HIL Grid emulates the electrical grid loads. Both system test benches provide the opportunity to use the original WTG controller as it is used on the tower. The inherit control strategy of the WTG and its strength and weaknesses can thus be analysed.
So far, the test campaigns especially focused on measuring mechanical loads at critical drivetrain components due to specific operating modes such as grid connection, generator mode switching and fast shut downs. Mechanical overloads from transient effects like gusts or grid faults as well as grid code compliance must be taken into account for understanding damage mechanisms and for the WTG design validation.