tailieunhanh - Improvement of buck converter performance using artificial bee colony optimized pid controller

In this study, Artificial Bee Colony (ABC) algorithm is proposed to determine gain parameters of the PID algorithm for controlling a designed buck converter. | Journal of Automation and Control Engineering Vol. 3, No. 4, August 2015 Improvement of Buck Converter Performance Using Artificial Bee Colony Optimized-PID Controller Yusuf Sonmez1, Ozcan Ayyildiz1, H. Tolga Kahraman2, Ugur Guvenc3, and Serhat Duman3 1 Department of Electrical and Energy, Gazi Vocational College, Gazi University, Turkey Department of Software Engineering, Technology Faculty, Karadeniz Technical University, Turkey 3 Department of Electrical and Electronics Engineering, Technology Faculty, Duzce University, Turkey Email: {ysonmez, oayyildiz}@, htolgakahraman@, {ugurguvenc, serhatduman}@ 2 Abstract—In this study, Artificial Bee Colony (ABC) algorithm is proposed to determine gain parameters of the PID algorithm for controlling a designed buck converter. Study aims to improve the performance of buck converter via ABC-PID. Genetic Algorithm (GA) based PID is used also to control the converter in order to investigate the performance of the proposed algorithm on the system. Experiments with different cases are done via simulations. In the simulations, settling time, steady-state error and readjustment time of output voltage in cases of load variation are analyzed in order to determine the performance of the proposed algorithm. Results obtained from simulations are shows that ABC-PID controlled converter has superior performance than GA-PID controlled buck converter. Index Terms—artificial bee colony algorithm, PID, buck converter I. INTRODUCTION Dc-dc converters are widely used power electronics components in industrial area like switching mode power supply (SMPS), personal computer, dc motor drives, etc. The input of the dc-dc converters is unregulated dc voltage obtained by the rectifying line-voltage and a converter converts this input into a regulated dc output voltage at a desired level. Buck converter is used to decrease the output voltage level in proportion to input and so it is called or known as step-down .