1. Log file (External controller) Overview of the contents in the wind turbine log file printed by SIMA. The log file is intended for debugging purposes. This comes in addition to any log files printed by the controller itself. Table 1. Overview of signals in the wind turbine log file. The files contains signals to (measurements) and from external controller (feedback). nblade = number of wind turbine blades, node_meas= additional nodal measurements, nel_meas= additional element measurements. An example with 0 additional nodal and 1 additional element measurement is shown in the last column. Signal Unit Typical Unit Number of columns Example: nblade = 3, node_meas=0, nel_meas=1 Time [T] [s] 1 1 Flag feedback [-] [-] 1 1 Torque reference [F*L] [kNm] 1 1 Requested pitch (Nblade entires) [rad] [rad] nblade 3 Shaft rotational speed [rad/T] [rad/s] 1 1 Generated electric power [F*L/T] [kW] 1 1 Yaw controller feedback [rad/T] [rad/s] 1 1 Measurement flag [-] [-] 1 1 Shaft rotational speed [rad/T] [rad/s] 1 1 Measured pitch (Nblade entries) [rad] [rad] nblade 3 Shaft end 2 displ X, Y, Z (three entries) [L] [m] 3 3 Shaft end 2 rot X, Y, Z (three entries) [rad] [rad] 3 3 Shaft end 2 vel X, Y, Z (three entries) [L/T] [m/s] 3 3 Shaft end 2 rot vel X, Y, Z (three entries) [rad/T] [rad/s] 3 3 Shaft end 2 acc X, Y, Z (three entries) [L/T^2] [m/s2] 3 3 Shaft end 2 rot acc X, Y, Z (three entries) [rad/T^2] [rad/s2] 3 3 Wind velocity X, Y, Z (three entries) [L/T] [m/s] 3 3 Blade root mom X (Nblade entries) [F*L] [kNm] nblade 3 Blade root mom Y (Nblade entries) [F*L] [kNm] nblade 3 Blade root mom Z (Nblade entries) [F*L] [kNm] nblade 3 Blade root accumulated aerodynamic torsional moment (Nblade entries) [F*L] [kNm] nblade 3 Nodal measurements (optional) 18*number of nodal measurements 0 3 displacements [L] [m] 3 3 rotations [rad] [rad] 3 6 velocities [L/T] (translations) or [rad/T](rotations) [m/s] (translations) or [rad/s](rotations) 6 6 accelerations [L/T^2] (translations) or [rad/T^2](rotations) [m/s2] (translations) or [rad/s2](rotations) 6 Element measurenents (optional) 10*number of element measurements 10 Effective tension [F*L] [kNm] 1 Torsional moment [F*L] [kNm] 1 My moments end 1 and end 2 [F*L] [kNm] 2 Myxmoments end 1 and end 2 [F*L] [kNm] 2 Qy-shear force end 1 and end 2 [F] [kN] 2 Qz-shear force end 1 and end 2 [F] [kN] 2 Yaw error [F*L] [rad] 1 1 Azimuth angle [rad] [rad] 1 1