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A type-2 fuzzy logic controller design for buck and boost DC–DC converters

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Abstract

Conventional (type-1) fuzzy logic controllers have been commonly used in various power converter applications. Generally, in these controllers, the experience and knowledge of human experts are needed to decide parameters associated with the rule base and membership functions. The rule base and the membership function parameters may often mean different things to different experts. This may cause rule uncertainty problems. Consequently, the performance of the controlled system, which is controlled with type-1 fuzzy logic controller, is undesirably affected. In this study, a type-2 fuzzy logic controller is proposed for the control of buck and boost DC–DC converters. To examine and analysis the effects of the proposed controller on the system performance, both converters are also controlled using the PI controller and conventional fuzzy logic controller. The settling time, the overshoot, the steady state error and the transient response of the converters under the load and input voltage changes are used as the performance criteria for the evaluation of the controller performance. Simulation results show that buck and boost converters controlled by type-2 fuzzy logic controller have better performance than the buck and boost converters controlled by type-1 fuzzy logic controller and PI controller.

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Authors and Affiliations

  1. Department of Electronics and Computer Education, Gazi University, 06500, Ankara, Turkey

    Ismail Atacak & Omer Faruk Bay

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  1. Ismail Atacak
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  2. Omer Faruk Bay
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Correspondence to Omer Faruk Bay.

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Atacak, I., Bay, O.F. A type-2 fuzzy logic controller design for buck and boost DC–DC converters. J Intell Manuf 23, 1023–1034 (2012). https://doi.org/10.1007/s10845-010-0388-1

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  • DOI: https://doi.org/10.1007/s10845-010-0388-1

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