Single Input Single Output SEPIC converter for BLDC drive

  • Unique Paper ID: 180677
  • PageNo: 2116-2122
  • Abstract:
  • A novel converter topology is introduced for driving permanent magnet brushless DC (BLDC) motors with unipolar currents. This design features a front-end single-ended primary inductance converter (SEPIC) and a series switch for each motor phase. By grounding all switches, the topology simplifies gate drive circuits. The input voltage can be boosted, providing enhanced current regulation, which is particularly beneficial for low-voltage applications. When operating with an AC supply, the SEPIC converter functions in discontinuous conduction mode (DCM). In this mode, it acts as a voltage follower, allowing the line current to approximate the line voltage waveform. This approach reduces low-order harmonics and improves the power factor without requiring any voltage or current sensors. The simplicity, along with a reduced component count, makes this topology an attractive, low-cost solution for various variable-speed drive applications.

Copyright & License

Copyright © 2026 Authors retain the copyright of this article. This article is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

BibTeX

@article{180677,
        author = {VATTEPU ANUDEEP and K.M.M.Tarakesh and R.S.R KRISHNAM NAIDU},
        title = {Single Input Single Output SEPIC converter for BLDC drive},
        journal = {International Journal of Innovative Research in Technology},
        year = {2025},
        volume = {12},
        number = {1},
        pages = {2116-2122},
        issn = {2349-6002},
        url = {https://ijirt.org/article?manuscript=180677},
        abstract = {A novel converter topology is introduced for 
driving permanent magnet brushless DC (BLDC) 
motors with unipolar currents. This design features a 
front-end single-ended primary inductance converter 
(SEPIC) and a series switch for each motor phase. By 
grounding all switches, the topology simplifies gate 
drive circuits. The input voltage can be boosted, 
providing enhanced current regulation, which is 
particularly beneficial for low-voltage applications. 
When operating with an AC supply, the SEPIC 
converter functions in discontinuous conduction mode 
(DCM). In this mode, it acts as a voltage follower, 
allowing the line current to approximate the line voltage 
waveform. This approach reduces low-order harmonics 
and improves the power factor without requiring any 
voltage or current sensors. The simplicity, along with a 
reduced component count, makes this topology an 
attractive, low-cost solution for various variable-speed 
drive applications.},
        keywords = {},
        month = {June},
        }

Cite This Article

ANUDEEP, V., & K.M.M.Tarakesh, , & NAIDU, R. K. (2025). Single Input Single Output SEPIC converter for BLDC drive. International Journal of Innovative Research in Technology (IJIRT), 12(1), 2116–2122.

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