Static Mechanical Properties and Modal Analysis of a Kind of Lift-Drag Combined-Type Vertical Axis Wind Turbine

<table class="fixed-width table-group" id="tab13"><tr><td><table class="table"><colgroup><col style="width:8.71em"/><col style="width:4.35em"/></colgroup><tr><td class="thead-hr" colspan="2"><hr/></td></tr><tr class="thead"><td class="align_left">Order</td><td class="align_center">Value</td></tr><tr><td class="thead-hr" colspan="2"><hr/></td></tr><tr><td class="align_left">First order [Hz]</td><td class="align_center">15.2166</td></tr><tr><td class="align_left">Second order [Hz]</td><td class="align_center">15.2166</td></tr><tr><td class="align_left">Third order [Hz]</td><td class="align_center">88.6749</td></tr><tr><td class="align_left">Fourth order [Hz]</td><td class="align_center">88.6749</td></tr><tr><td class="align_left">Fifth order [Hz]</td><td class="align_center">120.362</td></tr><tr><td class="align_left">Sixth order [Hz]</td><td class="align_center">168.738</td></tr><tr class="table-tr"><td colspan="2"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

<div>The first six-order mode natural frequency of tower.</div>

International Journal of Rotating Machinery

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Table 13

Table 13: Static Mechanical Properties and Modal Analysis of a Kind of Lift-Drag Combined-Type Vertical Axis Wind Turbine 