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Title:
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Real-time Process Simulator of Wind Turbine Control Systems
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Author(s):
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Published by:
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Publication date:
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ECN
Wind Energy
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24-1-2008
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ECN report number:
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Document type:
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ECN-E--07-046
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ECN publication
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Number of pages:
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Full text:
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172
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Download PDF
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Abstract:
The development of a real-time simulator for a complete wind turbine system has been carried out for the evaluation of the overall control system. The real-time simulator software has been developed in Matlab/Simulink and supports automated real-time compilation (Real Time Workshop) to a real-time code for use at a hardware platform (dSpace, xPC-target)>
The following program modules were developed and implemented:
• efficient integrated linear structural models for the rotor, drive-train and support structure in a working point range;
• an interpolation method between these models has been derived;
• non-linear aerodynamic (BEM) and hydrodynamic (Morison) conversion models;
• a blade effective windspeed model, which account for the rotational sampling of spatial turbulence, for tower shadow and wind shear, and for oblique inflow;
• a wave generation model (Airy) in order to cope with offshore situations;
• an electric system model in a rotating reference frame (Park) consisting of a doubly fed induction generator, converter, transformer and cabling.
• quasi-steady and easy to parametrise models for turbine specific peripheral devices like pumps, motors, valves, brakes, heat exchangers.
• models of peripheral devices which comprise discontinuous behaviour such as switching and Coulomb friction.
• generic models for the thermic behaviour of the heat generating systems like gearbox, brake and generator.
These subsystem models were integrated in an overall Simulink scheme for time-domain simulation and compilation to real-time code.
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