Abstract
In this study, a robust output SEPIC DC-DC converter is designed and simulated. The studied single ended primary inductor converter (SEPIC) output voltage is regulated to a constant value regardless of its input. A double loop PI controller is designed and tuned for the voltage and current control which yields a control technique that results in simple implementation by reducing complexity. The multiloop control technique is used to improve converter behavior in case of wide system parameter variations. The controller parameters and design procedure are provided for the SEPIC converter for non zero current operation mode. The proposed implementation of the controlled SEPIC converter has been simulated in Matlab/Simulink environment. The simulations have been done with various operating conditions. Results show that the PI-controlled SEPIC rejects the disturbances and provides good tracking performance
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