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All Journal International Journal of Power Electronics and Drive Systems (IJPEDS)
Pandav Kiran Maroti
University of Johannesburg
Control & Systems Engineering Electrical & Electronics Engineering

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Control of Chaos in a Current Mode Controlled Buck Boost Converter Using Weak Periodic Perturbation Method P. Sriramalakshmi; A. Kavitha; P. Sanjeevikumar; Tole Sutikno; Pandav Kiran Maroti; Vigna K. Ramachandaramurthy
International Journal of Power Electronics and Drive Systems (IJPEDS) Vol 8, No 4: December 2017
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (53.1 KB) | DOI: 10.11591/ijpeds.v8.i4.pp1467-1480

Abstract

This paper analyses the nonlinear phenomena in current mode controlled buck-boost converter. The system undergoes various operating regions whenever there is a change in non linear elements presented in the system as well as in the loads. In this work, inductor current is considered as the reference for analysis.The results show that the converter enters into period-1, periodic doubling and chaotic regions as per the parameter (IL) variations.  The proposed control strategy, weak periodic perturbation (WPP) method tries to stabilize the system from the chaotic behavior.The buck boost converter along with the control system is simulated using MATLAB/SIMULINK software tool and the results are presented.The hardware implementation of the system is done and the results are verified with  the simulation results. It shows that the WPP can transform the system behaviour from the chaotic region to the periodic one. 
Performance analysis of DC/DC bidirectional converter with sliding mode and pi controller Chandra Shekher Purohit; Geetha M.; Padmanaban Sanjeevikumar; Pandav Kiran Maroti; Shruti Swami; Vigna K. Ramachandaramurthy
International Journal of Power Electronics and Drive Systems (IJPEDS) Vol 10, No 1: March 2019
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (786.958 KB) | DOI: 10.11591/ijpeds.v10.i1.pp357-365

Abstract

A sliding mode controller for a non-isolated DC/DC, bidirectional converter is presented and comparative study with PI controller is done along with ISE analysis, in order to do performance analysis. The proposed system can be utilized in many applications such as electrical vehicle, distributed power generation or small grids. Second theorem of Lyapunov is utilized and stability of the closed loop system is mathematically proven. The adopted control strategy achieves effective output voltage regulation and good dynamic stability. Rejection of disturbance is also an inherent characteristic of this technique. Furthermore, it is illustrated that the system can successfully follow changes of load demand and compensates sudden disturbances in operating condition. The design is evaluated and verified using Matlab/Simulink. Results of Matlab simulation are provided to show the feasibility of the proposed system and effectiveness of control method. Simulation results show that this technique can provide a considerable edge over control techniques which are presently available (applied) over this type of converter.
Co-Authors A. Kavitha Chandra Shekher Purohit Geetha M. P. Sanjeevikumar P. Sriramalakshmi Padmanaban Sanjeevikumar Shruti Swami Tole Sutikno Vigna K. Ramachandaramurthy