Journal of Power Electronics

  • 제22권6호
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  • Pages.1020-1032
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  • 2022
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  • 1598-2092(pISSN)
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  • 2093-4718(eISSN)
전력전자학회 (The Korean Institute of Power Electronics)
권호 표지
DOI QR코드

DOI QR Code

Enhanced load adaptive modulation of induction heating series resonant inverters to heat various-material vessels

  • Jeong, See‑Hoon (Full Bridge IH Taskforce, LG Electronics) ;
  • Jin, Ju‑Il (Product Development Team, Hanwha Solutions) ;
  • Park, Hwa‑Pyeong (Energy Efficiency Division, Korea Institute of Energy Research (KIER)) ;
  • Jung, Jee‑Hoon (Department of Electrical Engineering, Ulsan National Institute of Science and Technology (UNIST))
  • 투고 : 2021.11.10
  • 심사 : 2022.02.11
  • 발행 : 2022.06.20
⟨ 이전 논문 다음 논문 ⟩

초록

Nowadays all-metal induction heating (IH) cooktops have become popular for heating various pots quickly and safely. A load adaptive modulation (LAM) method was proposed to improve the IH power delivery capability and the cost-effectiveness of an all-metal IH system. However, this method shows poor power conversion efficiency under light-load conditions since a high switching loss is induced using the pulse frequency modulation (PFM) method in the series resonant inverters for IH applications. In this paper, a multi-mode control strategy for an IH system employing the LAM method is proposed to improve light-load efficiency when compared with the conventional LAM method. The proposed multi-mode control algorithm automatically changes its modulation according to the pots' material-dependent resistance. The modulation method is selected to improve the light-load efficiency using the proposed control strategy. Experimental results demonstrate the validity and performance of the proposed multi-mode control algorithm with a 2-kW prototype IH series resonant inverter and various-material pots.

키워드

과제정보

This work was supported by the National Research Foundation of Korea (NRF) grant funded by the Korea government (MIST) (No.2019R1A2B5B01069665).

참고문헌

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