Grid-friendly connecting of constant-speed wind turbines using external resistors |
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Authors: | Thiringer T |
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Affiliation: | Dept. of Electr. Power Eng., Chalmers Univ. of Technol., Goteborg; |
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Abstract: | In this paper, an alternative method of connecting fixed-speed wind turbines, with active pitch mechanisms or variable-slip generators, is proposed and evaluated. Instead of using the conventional soft starter, external resistors are used. The method was evaluated via laboratory tests on a 15-kW machine and theoretically on a 1-MW wind turbine. The proposed method causes smaller grid power quality impact, especially on inductive grids, compared with soft starters. This means that it will be possible to install constant-speed wind turbines to weaker grids using this method. |
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