Title: A harmonic suppression method of variable frequency drive based on bacterial foraging algorithm

Authors: Dongming Xiao; Yong Wang; Kuanfang He; Xuejun Li

Addresses: Engineering Research Center of Advanced Mining Equipment of Ministry of Education, Hunan University of Science and Technology, Xiangtan, 411201, China ' Engineering Research Center of Advanced Mining Equipment of Ministry of Education, Hunan University of Science and Technology, Xiangtan, 411201, China ' Engineering Research Center of Advanced Mining Equipment of Ministry of Education, Hunan University of Science and Technology, Xiangtan, 411201, China ' Engineering Research Center of Advanced Mining Equipment of Ministry of Education, Hunan University of Science and Technology, Xiangtan, 411201, China

Abstract: A harmonic suppression method of variable frequency drive (VFD) based on bacterial foraging algorithm is developed in this study. The objective function to minimise total harmonic distortion (THD) with certain constraints is established. In order to solve a series of nonlinear transcendental equation, use bacterial foraging algorithm to get the optimal switching time in a certain frequency range and different load to determine the switching time of the inverter power devices. The simulation and experiment 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.

Keywords: total harmonic distortion; THD; bacterial foraging algorithm; BFA; pulse width modulation; PWM; harmonic optimisation; harmonic suppression; variable frequency drives; simulation; harmonic amplitude.

DOI: 10.1504/IJCSM.2016.076043

International Journal of Computing Science and Mathematics, 2016 Vol.7 No.1, pp.76 - 86

Received: 16 Jul 2015
Accepted: 22 Oct 2015
Published online: 22 Apr 2016 *

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