Abstract
This study presents the analysis and design of a single phase power factor correction (PFC) scheme using a DC–DC single ended primary inductance converter with genetic algorithm (GA)-tuned proportional integral (PI) controllers. A systematic off-line design approach using GA for optimising the parameters of the PI controller is proposed and the performance is compared with the conventional Z–N tuned PI controller. The steady-state and transient responses of the converter subjected to a change in the load, set point and line variations are investigated. The performance analysis of the proposed converter in continuous conduction mode is made for the above-mentioned methods using Matlab/Simulink-based simulation studies and experimental set up. Results reveal that the GA-tuned PI controller yields superior performance to the Z–N tuned PI controller in terms of power factor, percentage total harmonic distortion, regulated output voltage for the variations in line, load and efficient tracking of output voltage for a change in the reference voltage.
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