title: Analysis, control and design of a non-inverting buck-boost converter: A bump-less two-level T-S fuzzy PI control.
abstract: In this paper, a new modified fuzzy Two-Level Control Scheme (TLCS) is proposed to control a non-inverting buck-boost converter. Each level of fuzzy TLCS consists of a tuned fuzzy PI controller. In addition, a Takagi-Sugeno-Kang (TSK) fuzzy switch proposed to transfer the fuzzy PI controllers to each other in the control system. The major difficulty in designing fuzzy TLCS which degrades its performance is emerging unwanted drastic oscillations in the converter output voltage during replacing the controllers. Thereby, the fuzzy PI controllers in each level of TLCS structure are modified to eliminate these oscillations and improve the system performance. Some simulations and digital signal processor based experiments are conducted on a non-inverting buck-boost converter to support the effectiveness of the proposed TLCS in controlling the converter output voltage.
authors.affiliation: Young Researchers and Elite Club, Mashhad Branch, Islamic Azad University, Mashhad, Iran.
authors.forename: Omid Naghash
authors.initials: ON
authors.lastname: Almasi
authors.affiliation: Young Researchers and Elite Club, Mashhad Branch, Islamic Azad University, Mashhad, Iran.
authors.forename: Vahid
authors.initials: V
authors.lastname: Fereshtehpoor
authors.affiliation: Department of Energy Technology, Aalborg University, Aalborg DK-9220, Denmark. Electronic address: mhkhoban@gmail.com.
authors.forename: Mohammad Hassan
authors.initials: MH
authors.lastname: Khooban
authors.affiliation: Department of Energy Technology, Aalborg University, Aalborg DK-9220, Denmark.
authors.forename: Frede
authors.initials: F
authors.lastname: Blaabjerg
keywords: Fuzzy PI controller; Non-inverting buck-boost converter; TSK fuzzy systems; Two-level non-oscillation controller