117. Application of Bacteria Foraging Algorithm on Harmonics Optimal Control for Inverter

In the process of converter driving mine hoist, the output voltage contains a lot of harmonics. Aiming at this problem, Harmonics optimal control based on bacterial foraging algorithm is developed in this study. Establishing the objective function to minimize total harmonic distortion (THD) with certain constraints, using bacterial foraging algorithm to solve a series of nonlinear transcendental equation to get the optimal switching time in a certain frequency range and to determine the witching time of the power devices. Compared with other literature, the results show that the application of bacterial foraging algorithm can more effectively suppress the harmonic amplitude in theory, and the total harmonic distortion is smaller.