Integrated Wind Turbines and HVDC Power Transmission Lines

An innovative scheme for the direct integration of wind turbines into the existing High Voltage Direct Current (HVDC) transmission systems without the need for boost power converters and step-up transformers is presented in this article. In this approach, specific voltage differences between two parallel lines of a double-circuit HVDC power transmission system are created. Such voltage difference vectors are controllable and have suitable magnitudes for integrating wind turbines into HVDC transmission lines.