Abstract
Various modal analysis methods are available for single-rotor wind turbines, but there is no report and guidance on the modal property analysis of multi-rotor wind turbines. This paper presents a dynamic modeling method for the modal response analysis of a wind turbine with two three-bladed isotropic rotors. The equations of motion are derived using Lagrange's equations and are further linearized at a steady-state equilibrium. To avoid using Floquet Theory to remove the periodic coefficients, multi-blade coordinates are utilized. Comparison between the numerical simulations and a high-fidelity model in HAWC2 shows agreements in terms of modal frequencies. The results shows that the whirling modes splits into symmetric and asymmetric rotor modes.
| Original language | English |
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| Title of host publication | 14th International Conference on Multibody Systems, Nonlinear Dynamics, and Control : Volume 6: 14th International Conference on Multibody Systems, Nonlinear Dynamics and Control |
| Number of pages | 7 |
| Volume | 6 |
| Publisher | American Society of Mechanical Engineers |
| Publication date | 2018 |
| Article number | DETC2018-86142 |
| ISBN (Electronic) | 978-0-7918-5183-8 |
| DOIs | |
| Publication status | Published - 2018 |
| Event | the ASME 2018 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference - Quebec City, Canada Duration: 26 Aug 2018 → 29 Aug 2018 |
Conference
| Conference | the ASME 2018 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference |
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| Country/Territory | Canada |
| City | Quebec City |
| Period | 26/08/2018 → 29/08/2018 |