Regulating the Output Voltage of Buck-Boost Converters Using General Type2 Fuzzy Controller

Subject Areas : Communication

Hamid Reza Ghorbani ¹ , Reihaneh Kardehi Moghaddam ² , S. Ehsan Razavi ³

1 - Department of Electrical Engineering, Mashhad Branch, Islamic Azad University, Mashhad, Iran
2 - Department of Electrical Engineering, Mashhad Branch, Islamic Azad University, Mashhad, Iran
3 - Department of Electrical Engineering, Mashhad Branch, Islamic Azad University,Mashhad, Iran

Received: 2020-02-05 Accepted : 2020-05-02 Published : 2020-06-01

Keywords: Voltage Regulator, buck-boost, power electronics converters, interval fuzzy type-2, general fuzzy type-2,

Abstract :

Power electronic converters have been considered by many researchers and their control and robustness under various operating conditions has a great importance. The proposed type-2 fuzzy controller employs expert experience to control the power electronic converters, considering to their non-linear and time variant structure. Using type-2 fuzzy controller enhances the stability and robustness of system. This paper's attempt is to compare general and interval type-2 fuzzy controllers in terms of dealing with non-linear uncertain plants. It is shown that general type-2 fuzzy controller leads to more accuracy in comparison with interval type-2 and type-1 fuzzy controllers in regulating the output voltage, as it is shown in simulation part. To compare the performance of the controlling methods, the Euclidean norm of regulating error is calculated.