Field Validation of Demanded Power Point Tracking Control Algorithm for Medium-Capacity Wind Turbine

In this paper, the previously proposed demanded power point tracking (DPPT) control is applied to a medium-capacity wind turbine. Based on the results of our previous studies, the control algorithm has modified to be advantageous for wind farm control and load reduction of individual wind turbines. The target turbine is a medium-capacity turbine with a rated power of 100 kW and uses direct drive-train and integrated pitch control via hydraulic pressure. Experiments were carried out for each of 100%, 30%, and 20% of the rated power with natural wind conditions at an onshore test bed in Jeju Island in South Korea. The performance data was measured at a sampling frequency of 2 Hz by changing the power command. Test results show that the power is limited by the control method presented in accordance with the power command. In addition, it is confirmed that the turbine operates similarly to the in-house simulation model.