Global sliding mode controller for buck converter based on reaching law

2008 ◽  
Author(s):  
Yu Ni ◽  
Jianping Xu
Keyword(s):  
Sliding Mode ◽  
Buck Converter ◽  
Sliding Mode Controller ◽  
Reaching Law

scholarly journals Enhanced sliding mode controller performance in DC-DC buck converter using a tan hyperbolic reaching law and constant plus proportional reaching law

2020 ◽  
Vol 9 (2) ◽  
Author(s):  
Siddesh K. B. ◽  
Basavaraja Banakara ◽  
R. Shivarudraswamy
Keyword(s):  
Simulation Analysis ◽  
Sliding Mode ◽  
Buck Converter ◽  
Sliding Mode Controller ◽  
Loading Conditions ◽  
Switching Loss ◽  
Major Drawback ◽  
Reaching Law ◽  
Main Portion ◽  
Chattering Attenuation

This paper presents an enhanced sliding mode controller (SMC) operation, chattering analysis and loading conditions of the SMC DC-DC buck converter. Sliding mode portion, chattering attenuation are analyzed by using a conventional and proposed reaching law in buck converter. A proposed tan hyperbolic reaching law (THRL) is originated to be useful in terms of chattering mitigation and fast convergence. The major drawback of the conventional reaching law viz, it bypasses the main portion of the sliding mode portion to ensure fast reaching. It causes more chattering, more time to reach the steady state on the switching surface. The most significant improvement of SMC is that it guarantees strengthening the sliding mode phase. The proposed tan hyperbolic reaching law is being hit here during an exponential adjustment so that the attributes of it, covers complete sliding mode portion, chattering mitigation and fast reaching time. In turn, cause fewer switching loss in the buck converter. Even external disturbances and uncertainty of the system occurs. The loading conditions are applied to proposed tan hyperbolic reaching law and analyzed. Simulation analysis conducted by MATLAB/Simulink.

A Buck Converter Design Based on Sliding Mode Control Strategy

2013 ◽  
Vol 401-403 ◽  
pp. 2033-2036
Author(s):  
Yu Gao ◽  
Chu Zhou ◽  
Bin Zhou ◽  
Shao Cheng Qu
Keyword(s):  
Sliding Mode Control ◽  
Control Strategy ◽  
Sliding Mode ◽  
Buck Converter ◽  
Sliding Mode Controller ◽  
Control Approach ◽  
Reaching Law ◽  
Mode Control ◽  
Result Show ◽  
Converter Design

A sliding mode controller for buck converter based on PWM technology is discussed.Firstly, the schematic diagram of buck converter circuit based on a slidingmode control strategy is designed. Then a sliding mode control approach basedon reaching law is constructed. A circuit model based on MULTISIM is proposed.Finally, the simulation result show that the proposed method can effectively improvethe system dynamic characteristics.

Improvement of sliding mode controller by using a new adaptive reaching law: Theory and experiment

2020 ◽  
Vol 97 ◽  
pp. 261-268 ◽  
Author(s):  
Brahim Brahmi ◽  
Mohamed Hamza Laraki ◽  
Abdelkrim Brahmi ◽  
Maarouf Saad ◽  
Mohammad H. Rahman
Keyword(s):  
Sliding Mode ◽  
Sliding Mode Controller ◽  
Reaching Law ◽  
Theory And Experiment

scholarly journals LCC-S Based Discrete Fast Terminal Sliding Mode Controller for Efficient Charging through Wireless Power Transfer

Energies ◽  
2020 ◽  
Vol 13 (6) ◽  
pp. 1370
Author(s):  
Naghmash Ali ◽  
Zhizhen Liu ◽  
Yanjin Hou ◽  
Hammad Armghan ◽  
Xiaozhao Wei ◽  
...  
Keyword(s):  
Sliding Mode ◽  
Buck Converter ◽  
Maximum Efficiency ◽  
Sliding Mode Controller ◽  
Wireless Power ◽  
Output Current ◽  
Terminal Sliding Mode ◽  
Charging System ◽  
Fast Terminal Sliding Mode ◽  
System Output

Compared to the plug-in charging system, Wireless power transfer (WPT) is simpler, reliable, and user-friendly. Resonant inductive coupling based WPT is the technology that promises to replace the plug-in charging system. It is desired that the WPT system should provide regulated current and power with high efficiency. Due to the instability in the connected load, the system output current, power, and efficiency vary. To solve this issue, a buck converter is implemented on the secondary side of the WPT system, which adjusts its internal resistance by altering its duty cycle. To control the duty cycle of the buck converter, a discrete fast terminal sliding mode controller is proposed to regulate the system output current and power with optimal efficiency. The proposed WPT system uses the LCC-S compensation topology to ensure a constant output voltage at the input of the buck converter. The LCC-S topology is analyzed using the two-port network theory, and governing equations are derived to achieve the maximum efficiency point. Based on the analysis, the proposed controller is used to track the maximum efficiency point by tracking an optimal power point. An ultra-capacitor is connected as the system load, and based on its charging characteristics, an optimal charging strategy is devised. The performance of the proposed system is tested under the MATLAB/Simulink platform. Comparison with the conventionally used PID and sliding mode controller under sudden variations in the connected load is presented and discussed. An experimental prototype is built to validate the effectiveness of the proposed controller.

Sign in / Sign up

Export Citation Format

Share Document