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Analysis and design of reduced-order sliding-mode controller for three-phase power factor correction using cuk rectifiers

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3 Author(s)
Mallapu Gopinath Umamaheswari ; Department of Electrical and Electronics Engineering, College of Engineering, Anna University, Chennai 600025, Tamil Nadu, India; Department of Electronics and Instrumentation Engineering, R.M.K. Engineering College, Kavaraipettai 601206, Tamil Nadu, India ; Govindarajan Uma ; Kanjanalai Mahadevan Vijayalakshmi

In this study, the analysis and design of reduced-order sliding-mode controller (ROSMC) for power factor correction (PFC) in a three-phase system is presented. A new and systematic technique for the selection of sliding surface co-efficients to implement ROSMC is attempted. The front end is a three-phase diode rectifier followed by DC-DC Cuk converter modules with the common DC output. Instantaneous symmetrical component theory is used for reference current generation. The control strategy uses three inner ROSMC current controllers for source current shaping and an outer voltage loop using proportional integral controller for load voltage regulation. The proposed method offers simple control strategy, fast transient response and power factor close to unity. To validate the proposed method, a prototype controlled by dSPACE 1104 signal processor is set up. Simulation and experimental results indicate that the proposed system offers regulated output voltage for wide load variations and power factor close to unity.

Published in:

IET Power Electronics  (Volume:6 ,  Issue: 5 )