TY - GEN
T1 - Control of High Gain Modified SEPIC Converter
T2 - 2018 IEEE International Power Electronics and Application Conference and Exposition, PEAC 2018
AU - Ozsoy, Emre
AU - Padmanaban, Sanjeevikumar
AU - Blaabjerg, Frede
AU - Ionel, Dan M.
AU - Kalla, Ujjwal Kumar
AU - Bhaskar, Mahajan Sagar
PY - 2018/12/26
Y1 - 2018/12/26
N2 - This paper investigates, analyses and presents a control scheme for a modified SEPIC converter. High voltage conversion ratio is accomplished by using fewer passive components. The modified SEPIC converter is a combination of two different circuits. The first part is a standard SEPIC converter circuit, and the second part is a switched capacitor circuit. A high voltage conversion ratio is achieved up to 29 times by the input voltage, if the duty ratio is kept 0.9. However, high performance control of DC-DC converters is a difficult task due to nonlinearities and higher order behaviour. Control methods, such as PI controller or linear state space approaches cannot achieve the goal in a wide operating range. Instead, Sliding Mode Control (SMC) method is a suitable solution in such circumtances. Since it is insensitive to parameter deviations and free from system dynamics. This study accomplishes a SMC to the modified SEPIC converter and also maintains the constant switching frequency. The complete DC-DC converter along with the control algorithm using Matlab/Simulink simulation software is demonstrated. Simulations show impressive results with the expectations for different perturbation scenarios and matches the developed theoretical background.
AB - This paper investigates, analyses and presents a control scheme for a modified SEPIC converter. High voltage conversion ratio is accomplished by using fewer passive components. The modified SEPIC converter is a combination of two different circuits. The first part is a standard SEPIC converter circuit, and the second part is a switched capacitor circuit. A high voltage conversion ratio is achieved up to 29 times by the input voltage, if the duty ratio is kept 0.9. However, high performance control of DC-DC converters is a difficult task due to nonlinearities and higher order behaviour. Control methods, such as PI controller or linear state space approaches cannot achieve the goal in a wide operating range. Instead, Sliding Mode Control (SMC) method is a suitable solution in such circumtances. Since it is insensitive to parameter deviations and free from system dynamics. This study accomplishes a SMC to the modified SEPIC converter and also maintains the constant switching frequency. The complete DC-DC converter along with the control algorithm using Matlab/Simulink simulation software is demonstrated. Simulations show impressive results with the expectations for different perturbation scenarios and matches the developed theoretical background.
KW - DC-DC, Modified SEPIC Converter
KW - Dynamic Hysteresis Control, High Voltage Conversion Ratio
KW - Sliding Mode Control
UR - http://www.scopus.com/inward/record.url?scp=85061014927&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85061014927&partnerID=8YFLogxK
U2 - 10.1109/PEAC.2018.8590246
DO - 10.1109/PEAC.2018.8590246
M3 - Conference contribution
AN - SCOPUS:85061014927
T3 - Proceedings - 2018 IEEE International Power Electronics and Application Conference and Exposition, PEAC 2018
BT - Proceedings - 2018 IEEE International Power Electronics and Application Conference and Exposition, PEAC 2018
Y2 - 4 November 2018 through 7 November 2018
ER -