JSEA  Vol.3 No.7 , July 2010
Modeling and Analysis of Submerged Arc Weld Power Supply Based on Double Closed-Loop Control
ABSTRACT
According to the soft-switching pulsed SAW (Submerged arc weld) weld power supply based on the double closed-loop constant current control mode, a small signal mathematic model of main circuit of soft-switching SAW inverter was established by applying the method of three-terminal switching device modeling method, and the math-ematic model of double closed-loop phase-shift control system circuit was established by applying the method of state-space averaging method. Dynamic performance of the inverter was analyzed on base of the established math-ematic model, and the tested wave of dynamic performance was shown by experimentation. Research and experimentation show that relation between structure of the power source circuit and dynamic performance of the controlling system can be announced by the established mathematic model, which provides development of power supply and optimized design of controlling parameter with theoretical guidance.

Cite this paper
nullB. Shi, K. He, X. Li and D. Xiao, "Modeling and Analysis of Submerged Arc Weld Power Supply Based on Double Closed-Loop Control," Journal of Software Engineering and Applications, Vol. 3 No. 7, 2010, pp. 723-727. doi: 10.4236/jsea.2010.37083.
References
[1]   Y. B. Li, “Study on Soft-Switching Inverting High-Speed Double Wire Pulsed MAG Welding Equipment & its Digital Synchronic Control Technology,” South China University of Technology, Guangzhou, 2004.

[2]   Z. M. Wang, “Study on Novel Submerged Arc Welding Inverter and it’s Intelligent Welding System,” South China University of Technology, Guangzhou, 2002.

[3]   R. Brown and R. D. Middlebrook, “Sampled-Data Modeling of Switching Regulators,” Record of PESC, 1981, pp. 349-369.

[4]   B. T. Lin and S. S. Qiu, “Symbolic Analysis of PWM Switching Power Converters,” Acta Electronica Sinica, Vol. 24, No. 9, 1996, pp. 83-87.

[5]   G. Chen and Y. X. Xie, “Modeling of PWM Switching Converters. Telecom Power Technologies,” Vol. 23, No. 1, 2006, pp. 22-24.

[6]   Y. Li and H. Z. Wang, “Averaged Modeling and Simulation of Unideal Buck Boost Converter in State of Continuous Conduction Mode,” The World of Power Supply, Vol. 2006, No. 8, pp. 38-41.

[7]   Q. M. Niu, P. Luo, Z. J. Li and B. Zhang, “Space State Average Model of PSM in Boost Converter,” Journal of Electronics & Information Technology, Vol. 28, No. 10, 2006. pp. 1955-1958.

[8]   G. X. Wang, Y. Kang and J. Chen, “Control Modeling of a Single-Phase Inverter Based on State-Space Average Method,” Power Electronics, Vol. 38, No. 5, 2004, pp. 9- 12.

[9]   R. D. Middlebrook and S. Cuk, “A General Unified Approach to Modeling Switching Converter Power Stages,” Record of PESC, 1976, pp. 18-34.

[10]   “Vatche Vorperian. Simplified Analysis of PWM Converters Using Model of PWM Switch,” IEEE Transactions on Aerospace and Electronic Systems, Vol. 26, No. 3, 1990, pp. 490-505.

[11]   V. Vlatkovic, J. A. Sabate, R. B. Ridley, et al., “Small- Signal Analysis of the Phase-Shifted PWM Converter,” IEEE Transactions on Power Electronics, Vol. 7, No. 1, 1992, pp. 128-135.

[12]   M. J. Schutten and D. A. Torrey, “Improved Small-Signal Analysis for the Phase-Shifted PWM Power Converter,” IEEET Transactions on Power Electronics, Vol. 18, No. 2, 2003, pp. 659-669.

[13]   S. S. Hu, “Principles of Automatic Control,” Publishing Company of Science, Beijing, 2002.

 
 
Top