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In an onshore horizontal axis wind turbine, generator and converter are usually in the nacelle on the top of the tower, while the grid step-up transformer is placed at the bottom. Electric power is transmitted down through flexible cables of high current rating which are expensive and can suffer from large I2 R loss. An offshore wind turbine usually has to include the step-up transformer in the nacelle...
In horizontal axis wind turbines, the generator and converter are always designed to be placed in the nacelle on the top, and step-up transformers are located at the bottom of the tower or in a substation on the ground. Power is transmitted from nacelle to the transformer in low voltage and high current via parallel cables. In such an arrangement, high I2R loss would be expected. In addition to that,...
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