ANALYSIS OF CONVERTER TOPOLOGIES FOR HVDC TRANSMISSION SYSTEM FOR OFFSHORE WIND FARMS

Energy requirement increases every day across the globe. However, there is no relative increment in the sources for production of the energy. In order to balance the demand-production equation, sources of energy other than the traditional ones are being sought. With these renewable sources of energy comes necessity of compatible technologies for transmission of energy produced. Wind being one of the prominent sources of energy belonging to the Renewable group, systems for transmission of power from wind-farms to demand centers, often located at longer distances is an important topic of study. The paper focuses on converters in High Voltage Direct Current (HVDC) transmission for power transport from wind-farms located offshore to distant load centres. It compares the performance of Voltage Source Converter (VSC) and Modular Multilevel Converter (MMC) topologies when interface with a wind turbine.