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Volume 38 Issue 12
Dec.  2012
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Journal of Beijing University of Aeronautics and Astronautics  > 2012  >  38(12): 1619-1624.
Zhang Wei, Miao Zhifei, Qi Bojinet al. Main circuit topology and working status of inverter in on-site induction brazing of tubes[J]. Journal of Beijing University of Aeronautics and Astronautics, 2012, 38(12): 1619-1624. (in Chinese)
Citation: Zhang Wei, Miao Zhifei, Qi Bojinet al. Main circuit topology and working status of inverter in on-site induction brazing of tubes[J]. Journal of Beijing University of Aeronautics and Astronautics, 2012, 38(12): 1619-1624. (in Chinese)
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Main circuit topology and working status of inverter in on-site induction brazing of tubes

  • School of Mechanical Engineering and Automation, Beijing University of Aeronautics and Astronautics, Beijing 100191, China

  • Received Date: 05 Aug 2011
  • Publish Date: 30 Dec 2012
    Abstract
  • Considering the characteristic of on-site induction brazing of tubes, the voltage source series resonant circuit was adopted as main circuit topology of inverter in the square wave power. The impedance of series resonant circuit and the working status of inverter main circuit were discussed. Based on the above, the best working status of inverter was proposed. A new frequency tracking scheme, which combines the proportion integration(PI) control method with the IC SG2525A, was proposed to adjust inverter operating frequency to keep the induction heating circuit working in quasi-resonance state. This technology not only ensures the inverter safe and reliable work, but also enhances the induction brazing power source heating efficiency and power factor.

     

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    • References(7)
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