Crucial Torsional Modal Identify on Drive-Train in a Wind Turbine
The rotational frequency of large scale wind turbine is very low, so low order modal of drive-train in a horizontal-axis Wind turbine generator system (WTGS) needs special attention to avoid structural resonance. In this paper, with Lagrange’s equation, a three-mass drive-train dynamics of WTGS is modeled and analyzed. After comparing with the results by GHbladed4.1 and SIMPACK, we found that those results show little differences clearly. So the drive-train dynamics above is rational and the accurate analyses are fit to identify the crucial low order torsional modal of drive-train rapidly in WTGS. In addition, the anti-resonance frequency of the gear-train found by frequency response method can be very significant for vibration isolation of drive train in the wind turbine system.
Chunliang Zhang and Paul P. Lin
H. X. Li et al., "Crucial Torsional Modal Identify on Drive-Train in a Wind Turbine", Applied Mechanics and Materials, Vols. 226-228, pp. 275-280, 2012