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http://dx.doi.org/10.5370/KIEE.2013.62.6.798

Minimization of a CW CO2 Laser Output Ripple by using High Frequency Resonance Phenomena  

Sikander, Sakura (Dept. of Electronics and Electric Engineering, Pusan National University)
Kwon, Min-Jae (Dept. of Electronics and Electric Engineering, Pusan National University)
Kim, Hee-Je (Dept. of Electronics and Electric Engineering, Pusan National University)
Lee, Dong-Gil (Fisheries System Engineering Division, National Fisheries Research & Development Institute)
Xu, Guo-Cheng (Dept. of Electronics and Electric Engineering, Pusan National University)
Publication Information
The Transactions of The Korean Institute of Electrical Engineers / v.62, no.6, 2013 , pp. 798-802 More about this Journal
Abstract
In a conventional DC power supply used for CO2 laser, the circuit elements such as a rectifier bridge, a current-limiting resistor, a high voltage switch, energy storage capacitors ans a high-voltage isolation transformer using high turn ratio are necessary. Consequently, those supplies are expensive and require a large space. Thus, laser resonator and power supply should be optimally designed. In this paper, we propose a new power supply using high frequency resonance phenomena for CW(Continuous wave) CO2 laser (maximum output of 23W with discharge length of 450mm). It consists of a transformer including leakage inductance, magnetizing inductance and half-bridge converter, a three-stage Cockcroft-Walton and PFC(Power factor correction) circuit. The output ripple voltage can be controlled the minimum of 0.24% under the high frequency switching of 231kHz. Furthermore, the output efficiency was improved to 16.4% and the laser output stability of about 5.6% was obtained in this laser system.
Keywords
CW CO2 laser; Output ripple; Cockcroft-Walton circuit; Half-bridge; Resonance converter;
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1 M. Rentzsch, F. Gleisberg, H. Guldner, F.Benecke, C. Ditmanson, iseg Spezialelektronik GmbH, Dresden, "Closed analytical model of a 20kV output voltage 800 W output power seriesparallel-resonant converter with Walton Cockcroft multiplier," IEEE Power Electronics Specialists Conference, PESC, 2008.
2 R. L. Steigerwald, "A comparison of half-bridge resonant converter topologies," IEEE Trans. Power Electron. no.3, pp. 174-82, 1988.   DOI   ScienceOn
3 Hee-Je Kim, Myung-Sik Lee, Dong-Gil Lee, Min-Kuy Son, Kyung-Jun Lee, "Optimal ablation of fluorine-doped tin oxide (FTO) thin film layers adopting a simple pulsed Nd:YAG laser with TEM00 mode", Opt Lasers Eng;47:558-62, 2009.   DOI   ScienceOn
4 Hee-je Kim, Jin-Young Choi, Jeonghoon Kim, Ji-Tae Hong, Hyunwoong Seo, Dong-Gil Lee, Kyoung-Jun Lee, Min-Kyu Son. "Proposal of optimal process parameters for poly-methyl-meth-acryl plastic adhesion using a pulsed Nd:YAG laser:, Opt Eng 2009;48:084301-1-7.   DOI   ScienceOn
5 Yoshiki Nakata, Kunio Tsuchida, Noriaki Miyanaga, "Nano-structured surfaces on Ni-Ti generated by multiple shots of interfering femtosecond laser", Opt Lasers Eng 2009;47:847-9.   DOI   ScienceOn
6 J.K.R. Weber, J.J. Felten and P.C. Nordine, "laser Hearth Melt Processing of Ceramic Materials," Rev. Sci. Instrum. 67, pp.522-524, 1996   DOI
7 R. C. Harney," CO2 lasers for Military Applications," SPIE Vol. 1042 CO2 lasers and Applications, pp.42-54, 1989