Design of Optimal QFT Controller and Prefilter for Buck Converter Using Metaheuristic Algorithms
A buck converter is a step-down switching regulator. Buck convertors are being widely used in industrial applications that rely on regulated output voltage under fluctuating input voltage. A buck convertor works in the following modes: (a) current-controlled or (b) voltage-controlled mode. But these...
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| Format: | Article |
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Wiley
2018-01-01
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| Series: | Modelling and Simulation in Engineering |
| Online Access: | http://dx.doi.org/10.1155/2018/2453817 |
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| author | Nitish Katal Shiv Narayan |
| author_facet | Nitish Katal Shiv Narayan |
| author_sort | Nitish Katal |
| collection | DOAJ |
| description | A buck converter is a step-down switching regulator. Buck convertors are being widely used in industrial applications that rely on regulated output voltage under fluctuating input voltage. A buck convertor works in the following modes: (a) current-controlled or (b) voltage-controlled mode. But these convertors manifest several nonlinearites because of the switching operation. Hence, in order to generate a quality output of the convertor, the design of a controller becomes crucial. In this paper, the synthesis of a QFT-based robust controller and prefilter has been carried out for an uncertain buck converter with varying input voltage and varying load. The controller synthesis problem has been posed as an optimization problem, and metaheuristic algorithms have been used for obtaining the optimal gains for the QFT controller and prefilter. By doing this, the QFT synthesis can be carried out in a single step instead of following the sequential classical QFT process on Nichols charts and the need for the generation of templates and bounds has be eliminated. The designed 2-degree-of-freedom QFT control system offers a robust behavior and efficiently handles the parametric uncertainties. The robustness of the designed controller has been confirmed through simulation results for large input voltage and load fluctuations. |
| format | Article |
| id | doaj-art-9c6489d6da884f57b61c9173a431b1ad |
| institution | Kabale University |
| issn | 1687-5591 1687-5605 |
| language | English |
| publishDate | 2018-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Modelling and Simulation in Engineering |
| spelling | doaj-art-9c6489d6da884f57b61c9173a431b1ad2025-02-03T01:07:19ZengWileyModelling and Simulation in Engineering1687-55911687-56052018-01-01201810.1155/2018/24538172453817Design of Optimal QFT Controller and Prefilter for Buck Converter Using Metaheuristic AlgorithmsNitish Katal0Shiv Narayan1Electrical Engineering Department, Punjab Engineering College (Deemed to Be University), Chandigarh, IndiaElectrical Engineering Department, Punjab Engineering College (Deemed to Be University), Chandigarh, IndiaA buck converter is a step-down switching regulator. Buck convertors are being widely used in industrial applications that rely on regulated output voltage under fluctuating input voltage. A buck convertor works in the following modes: (a) current-controlled or (b) voltage-controlled mode. But these convertors manifest several nonlinearites because of the switching operation. Hence, in order to generate a quality output of the convertor, the design of a controller becomes crucial. In this paper, the synthesis of a QFT-based robust controller and prefilter has been carried out for an uncertain buck converter with varying input voltage and varying load. The controller synthesis problem has been posed as an optimization problem, and metaheuristic algorithms have been used for obtaining the optimal gains for the QFT controller and prefilter. By doing this, the QFT synthesis can be carried out in a single step instead of following the sequential classical QFT process on Nichols charts and the need for the generation of templates and bounds has be eliminated. The designed 2-degree-of-freedom QFT control system offers a robust behavior and efficiently handles the parametric uncertainties. The robustness of the designed controller has been confirmed through simulation results for large input voltage and load fluctuations.http://dx.doi.org/10.1155/2018/2453817 |
| spellingShingle | Nitish Katal Shiv Narayan Design of Optimal QFT Controller and Prefilter for Buck Converter Using Metaheuristic Algorithms Modelling and Simulation in Engineering |
| title | Design of Optimal QFT Controller and Prefilter for Buck Converter Using Metaheuristic Algorithms |
| title_full | Design of Optimal QFT Controller and Prefilter for Buck Converter Using Metaheuristic Algorithms |
| title_fullStr | Design of Optimal QFT Controller and Prefilter for Buck Converter Using Metaheuristic Algorithms |
| title_full_unstemmed | Design of Optimal QFT Controller and Prefilter for Buck Converter Using Metaheuristic Algorithms |
| title_short | Design of Optimal QFT Controller and Prefilter for Buck Converter Using Metaheuristic Algorithms |
| title_sort | design of optimal qft controller and prefilter for buck converter using metaheuristic algorithms |
| url | http://dx.doi.org/10.1155/2018/2453817 |
| work_keys_str_mv | AT nitishkatal designofoptimalqftcontrollerandprefilterforbuckconverterusingmetaheuristicalgorithms AT shivnarayan designofoptimalqftcontrollerandprefilterforbuckconverterusingmetaheuristicalgorithms |