<p>The topology of SEPIC "Single-ended primary inductance converter" is considered as a suitable option for automotive power system where the value of the output voltage should be ranging between the low and high values of the input value of voltage. The main feature of the DC-DC converter is the stability of output voltage. This paper shows the SEPIC converter employing PID converter to be used in industrial applications. A SEPIC DC-DC converter can manage either step-down mode or step-up mode. The benefit of using this circuit is to supply a stable and controlled output voltage no matter how much the input voltage is. The simulated behaviors of the uncontrolled and controlled SEPIC converter are presented in this paper. The PID controller based on bat algorithm (BA) optimization method is used for searching of the best Proportional–Integral-Derivative (PID) gains. The solution has given very good performance and whatever the output reference voltage variation and load disturbance of the system.</p>
<span>This work shows the design and tuning procedure of a discrete PID controller for regulating buck boost converter circuits. The buck boost converter model is implemented using Simscape Matlab library without having to derive a complex mathematical model. A new tuning process of digital PID controllers based on identification data has been proposed. Simulation results are introduced to examine the potentials of the designed controller in power electronic applications and validate the capability and stability of the controller under supply and load perturbations. Despite controller linearity, the new approach has proved to be successful even with highly nonlinear systems. The proposed controller has succeeded in rejecting all the disturbances effectively and maintaining a constant output voltage from the regulator.</span>
Voltage lift method opens a suitable way to enhance characteristics of DC-DC converters Self-lift can be defined as a typical approach extensively utilized in developing a DC-DC converter for amplifying output voltage. The use of the self-lift approach in the DC-DC conversion technologies result in designing the positive output Luo power converters with a high voltage transfer gains in the mathematical progression, such approach open the way to securely increasing voltage transfer gain that is related to the DC/DC converters as well as enhancing specifications regarding DC-DC converters. These converters could be utilized in the industrial applications as well as the computer peripheral equipment, particularly with regard to the high-output-voltage projects. Self-lift Positive Output Luo Converter in addition to the PID controller, therefore designed in the presented work, has appropriate output voltage regulations, also there aren't undershoots or overshoots and has been very effective. Detailed and full analysis regarding circuit in addition to discrete in addition to optimized PID controllers with the ABC algorithms was conducted. Furthermore, extensive simulations have been conducted and the results have been specified. PID controller platform has been proved with the use of MATLAB/Simulink model.
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