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The main objective of this document is to compare the performance between Fuzzy Logic controller (FLC) and Proportional Integral Derivative controller (PIDC) in improving the performance of DC/DC Buck Converters. The evaluation of the output has been carried out and compared by software simulation using MATLAB Simulink. Fuzzy logic controller has been implemented to the system by developing fuzzy...
As DC/DC converter is of strong non-linear, a fuzzy self-adaptive adjusting of PED controller is presented. This is a control mode which employs fuzzy control rules to modify the PED parameters online. The object of study in this paper is phase-shifted full-bridge converter. The performance of the converter has been proved to be perfect by using MATLAB simulation.
The combination of an electrolyser, a fuel cell, a stack of batteries and renewable energy sources can provide peak power control in a decentralized/distributed power system. The electrolyser stores the off-peak energy as hydrogen and the fuel cell uses this energy to produce on-peak electricity, while the batteries are used to provide short term storage. This paper presents a complete control system...
This paper presents the design, simulation and implementation of hybrid powerful fuzzy-PID (FZ-PID) controller compared with a pure fuzzy one. The FZ-PID controller was combined from PID and fuzzy ones. The FZ-PID was used to regulate the output voltage of a full bridge DC-DC converter and experimentally was tested. these results were also predicted using computer simulation. This controller based...
The paper introduces a kind of optimized fuzzy-PID control method which adopts linear quadratic regulator (LQR) approach in detail. In many industrial control systems, if the model of a system is unspecific or complex, PID parameters are rather difficult to find, based on the problem this article designed the advanced controller with LQR. On the contrary with the fact that the output voltage is always...
The rapid development of digital control technology provides a new approach to applications of modern control theory and algorithm in power supplies. Firstly, the paper presents a digital DC/DC converter regulated by a fixed-structure variable-parameter PID (proportional-Integral-differential) controller and analyzes the limitations if a large signal disturbs the system; secondly, the feasibility...
In this paper, several different control methods based on intelligent system on DC-DC converter are compared with together. These DC-DC converters are used for the stabilization or the control of DC voltage of a battery. Lately, improvement the performance of the step-down converter is one of the goals of the engineers in the industries. In this paper controlled step-down converter using new several...
A compounded on-line fuzzy controller with self-regulating PID is applied to a DC/DC converter in this paper, its working principle is discussed in detail, and the self-regulating rules of fuzzy discrete coefficient k/sub e/, k/sub ec/ and proportional coefficient k/sub u/ are analyzed deeply. The experimental results show the influence of k/sub e/, k/sub ec/ and k/sub u/ on fuzzy controller, and...
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