전기학회논문지 (The Transactions of The Korean Institute of Electrical Engineers)

  • 제65권5호
  • /
  • Pages.785-793
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  • 2016
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  • 1975-8359(pISSN)
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  • 2287-4364(eISSN)
대한전기학회 (The Korean Institute of Electrical Engineers)
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연속전류모드에서 기생손실들을 고려한 고정주파수 LCL형 컨버터 해석

Analysis of the Fixed Frequency LCL-type Converter at Continuous Current Mode Including Parasitic Losses

  • Park, Sangeun (Agency for defense development) ;
  • Cha, Hanju (Dept. of Electrical Engineering, Chung-nam Nat'l University)
  • 투고 : 2016.01.14
  • 심사 : 2016.04.07
  • 발행 : 2016.05.01
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초록

This paper analyzes an LCL-type isolated dc-dc converter operating for constant output voltage in the continuous conduction mode(CCM) with resistances of parasitic losses-static drain-source on resistance of power switch, ESR of resonant network(L-C-L)-using a high loaded quality factor Q assumptions and fourier series techniques. Simple analytical expressions for performance characteristics are derived under steady-state conditions for designing and understanding the behavior of the proposed converter. The voltage-driven rectifier is analyzed, taking into account the diode threshold voltage and the diode forward resistance. Experimental results measured for a proposed converter at low input voltage and various load resistances show agreement to the theoretical performance predicted by the analysis within maximum 4% error. Especially in the case of low output voltages and large loads, It is been observed that introduction of both rectifier and the parasitic components of converter had considerable effect on the performance.

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참고문헌

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