“…This way, any possible increase/decrease in tower side-side stress oscillations due to control actions aimed for minimizing tower fore-aft stress is taken into account. The cost of cyclic fatigue damage for each of the projections for a given azimuth direction is obtained by first performing RFC analysis on the projected stress trajectory, then applying Goodman equation for mean stress correction, then obtaining damage cost of each stress cycle by the tower material S-N curve and the component cost, and then applying Miner-Palmgren algorithm to sum up the cost of individual cycles to finally obtain the total cost (refer [23] for detailed formulation). The cost of battery damage is obtained by first performing RFC analysis on SOC(t), then applying Woehler curve mapping to obtain equivalent damage per cycle, then summing up the damage over all the identified cycle, and finally multiplying it with w B to obtain the total cost (refer [10] for detailed formulation).…”