Regular Papers
International Journal of Control, Automation and Systems 2014; 12(6): 1225-1233
Published online October 9, 2014
https://doi.org/10.1007/s12555-013-0206-6
© The International Journal of Control, Automation, and Systems
Modeling and Implementation of Fixed Switching Frequency Sliding Mode Control to Two-Stage DC-DC Converter
A fixed switching frequency sliding mode (FSFSM) controller for two-stage DC-DC converter is proposed. Owing to the time-varying switched mode operation, the dynamic performance of two-stage converter becomes high order and non-linear. For designing the FSFSM controller, the state-space average model is made, and then the three conditions of sliding mode (SM) control, namely, hitting, existence and stability condition are analyzed. A conventional linear controller (Lag) for two-stage converter is designed as a comparison to validate the good robustness and dynamic response of the FSFSM controller. At last, a series of simulation and experimental results are presented to demonstrate the feasibility of the designed FSFSM controller.
Keywords Lag control, pulse-width modulation, sliding mode control, two-stage DC-DC converter.
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Regular Papers
International Journal of Control, Automation and Systems 2014; 12(6): 1225-1233
Published online December 1, 2014 https://doi.org/10.1007/s12555-013-0206-6
Copyright © The International Journal of Control, Automation, and Systems.
Modeling and Implementation of Fixed Switching Frequency Sliding Mode Control to Two-Stage DC-DC Converter
Changhao Piao, Chao Jiang, Hongtao Qiao, Chongdu Cho, and Sheng Lu*
Chongqing University of Posts and Telecommunications
Abstract
A fixed switching frequency sliding mode (FSFSM) controller for two-stage DC-DC converter is proposed. Owing to the time-varying switched mode operation, the dynamic performance of two-stage converter becomes high order and non-linear. For designing the FSFSM controller, the state-space average model is made, and then the three conditions of sliding mode (SM) control, namely, hitting, existence and stability condition are analyzed. A conventional linear controller (Lag) for two-stage converter is designed as a comparison to validate the good robustness and dynamic response of the FSFSM controller. At last, a series of simulation and experimental results are presented to demonstrate the feasibility of the designed FSFSM controller.
Keywords: Lag control, pulse-width modulation, sliding mode control, two-stage DC-DC converter.
Vol. 23, No. 2, pp. 359~682
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