Journal of Electrical Engineering and Technology

The Korean Institute of Electrical Engineers (대한전기학회)
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Design and Implementation of PIC/FLC plus SMC for Positive Output Elementary Super Lift Luo Converter working in Discontinuous Conduction Mode

  • Muthukaruppasamy, S. (Dept. of EEE, Velammal Institute of Technology, Panchetti, Thiruvallur District, Chennai, Anna University) ;
  • Abudhahir, A. (Dept. of EEE, Veltech Multitech Dr.Rangarajan Dr.Sakunthala, Engineering College, Chennai, Anna University) ;
  • Saravanan, A. Gnana (Dept. of EEE, Research Supervisor, Anna University) ;
  • Gnanavadivel, J. (Dept. of EEE, Mepco Schlenk Engineering College, Sivakasi, Anna University) ;
  • Duraipandy, P. (Dept. of EEE, Velammal College of Engineering and Technology Madurai, Anna University)
  • Received : 2016.10.11
  • Accepted : 2018.02.26
  • Published : 2018.09.01
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Abstract

This paper proposes a confronting feedback control structure and controllers for positive output elementary super lift Luo converters (POESLLCs) working in discontinuous conduction mode (DCM). The POESLLC offers the merits like high voltage transfer gain, good efficiency, and minimized coil current and capacitor voltage ripples. The POESLLC working in DCM holds the value of not having right half pole zero (RHPZ) in their control to output transfer function unlike continuous conduction mode (CCM). Also the DCM bestows superlative dynamic response, eliminates the reverse recovery troubles of diode and retains the stability. The proposed control structure involves two controllers respectively to control the voltage (outer) loop and the current (inner) loop to confront the time-varying ON/OFF characteristics of variable structured systems (VSSs) like POESLLC. This study involves two different combination of feedback controllers viz. the proportional integral controller (PIC) plus sliding mode controller (SMC) and the fuzzy logic controller (FLC) plus SMC. The state space averaging modeling of POESLLC in DCM is reviewed first, then design of PIC, FLC and SMC are detailed. The performance of developed controller combinations is studied at different working states of the POESLLC system by MATLAB-Simulink implementation. Further the experimental corroboration is done through implementation of the developed controllers in PIC 16F877A processor. The prototype uses IRF250 MOSFET, IR2110 driver and UF5408 diodes. The results reassured the proficiency of designed FLC plus SMC combination over its counterpart PIC plus SMC.

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References

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