Title :
Universal DC-DC converter using SEPIC
Author :
Li, Ning ; Lin-Shi, X. ; Lefranc, P. ; Godoy, Elizabeth ; Jaafar, Azizah ; Allard, Bruno
Author_Institution :
AMPERE Lab., Univ. de Lyon, Villeurbanne, France
fDate :
Aug. 30 2011-Sept. 1 2011
Abstract :
This paper presents the application of fixed frequency (or indirect) Sliding Mode Control (SMC) to the DC-DC Single-Ended Primary Inductor Converter (SEPIC) which can operate in both step-up and step-down modes. Simulation and experimental studies are conducted. Two laboratory prototypes have been made: one with a switching frequency of 20kHz uses a DSP board which allows to validate the proposed control laws; another has a switching frequency of 500kHz where a FPGA is required. In this last case, only the output voltage is measured. A Kalman observer is proposed to estimate the state vector. Results are experimentally validated.
Keywords :
DC-DC power convertors; field programmable gate arrays; frequency control; observers; variable structure systems; DC-DC single-ended primary inductor converter; DSP board; FPGA; Kalman observer; fixed frequency sliding mode control; frequency 20 kHz; frequency 500 kHz; indirect sliding mode control; sliding mode control; state vector estimation; step-down modes; step-up modes; universal DC-DC converter; Digital signal processing; Field programmable gate arrays; Kalman filters; Observers; Steady-state; Switching frequency; Voltage control; DC power supply; Estimation technique; Field Programmable Gate Array (FPGA); sliding mode control;
Conference_Titel :
Power Electronics and Applications (EPE 2011), Proceedings of the 2011-14th European Conference on
Conference_Location :
Birmingham
Print_ISBN :
978-1-61284-167-0
Electronic_ISBN :
978-90-75815-15-3
