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전극의 용량성분을 이용한 공진이득 증폭형 유전가열장치에 관한 연구

A study on a dielectric heating system for amplifying the resonant gain using the capacitance of electrodes

  • Kim, Shin-Hyo (Research and Development Team, Korea Ship Safety Technology Authority) ;
  • Lee, Chang-Woo (Research and Development Team, Sangyoung Research and New Development) ;
  • Bae, Han-Nah (Research and Development Team, Sangyoung Research and New Development) ;
  • Cho, Dae-Kweon (Research and Development Team, Sangyoung Research and New Development)
  • 투고 : 2015.09.14
  • 심사 : 2015.11.24
  • 발행 : 2015.11.30

초록

본 논문에서는 300kHz 이상의 주파수를 사용하는 고전압펄스의 출력이득을 증폭시키는 방법에 대하여 고찰하였다. 종래의 파워스테이지의 전압을 상승시켜 펄스진폭(Pulse-amplitude)을 증폭하는 방식 대신에, 부하의 용량성분과 회로의 기생성분간의 공진을 이용하여 출력이득을 증폭하는 방식으로 연구가 진행되었다. 특히 브릿지형 대신에 Flyback Topology를 적용을 통하여 회로구성을 간소화하고, 출력펄스파형에 출력전극의 용량성분을 부여함에 따라 부하에 가해지는 출력전압의 이득을 증폭시킴으로써, 하드스위칭을 통한 출력회로 내에서의 과부하 및 발열에 따른 손상을 막을 수 있는 장점이 있다. 해당연구는 의료 및 산업용가열분야에 적용되는 유전가열 방식의 접촉형 가열기기의 공간적, 전기적 효율을 제고할 수 있는 한 방법을 제시한다.

In this paper, we study a method that amplifies the output gain of a high voltage pulse using 300 kHz or higher frequency. We conducted a study on a method for amplifying the output gain using the resonance between the capacitance components of the load and the parasitic components of the circuit, instead of the conservative method for amplifying the pulse-amplitude by raising the voltage of the power stage. In particular, the method simplifies the circuit configuration throughout the appliance of flyback-type topology instead of the bridge-type. There are advantages that prevent damage from overload and the heat in the output circuit through the hard switching by amplifying the gain of the output voltage applying to the load as given by the capacitance component of the output electrode to the output pulse waveform. This study proposed a method to enhance the spatial and electrical efficiency of the contact-type heating device through the dielectric heating method applied to the field of medical and industrial heating.

키워드

참고문헌

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  2. S. H. Kim and D. K. Cho, "Design of the self-oscillation UV flash lamp power supply and the characteristic of its operation using self-resonance of the transformer", Journal of the Korean Society of Marine Engineering, vol. 38, no. 1, pp. 48-55, 2014. https://doi.org/10.5916/jkosme.2014.38.1.48
  3. J. H. Jeong, H. J. Kim, and S. W. Kim, "Dielectric heating using high voltage generation of self LC resonance of transformer", Journal of Korean institute of Electrical Engineers, vol. 61, no.12, pp. 1877-1879, 2012. https://doi.org/10.5370/KIEE.2012.61.12.1877
  4. I. H. Oh, Analysis of a Resonant Type High Voltage Fly-back Converter in a CRT Horizontal Deflection Circuit and its High Voltage BJT Selection Guide-Line, AN9009, Fairchild Korea Semiconductor Inc. Available: http://www.fairchildsemi.com/an/AN/AN-9009.pdf, Accessed September 19, 2000.