High gain double interleave technique with maximum peak power tracking for wind turbine converter

This paper develops a new transformer-less high gain DC-DC converter for wind turbine converters. Because of low input voltage in wind turbine systems, a high voltage gain DC-DC converter is required and transformer based converters are normally used and therefore consequent cost and size increase. Alternatively the developed Double-Interleaved Dual Boost (DIDB) converter can provide a high voltage gain without the need of a transformer. This contributes to a significant reduction in size and cost while maintaining high conversion efficiency. It is shown from the experimental results from a case study that the voltage gain obtained from the DIDB converter is high and that the DIDB converter can be effectively controlled by the MPPT controller to track the maximum power from the wind.