用于鋼軌焊縫正火的雙頻感應(yīng)加熱電源的研究
[Abstract]:Induction heating has been widely used in industrial production and family life because of its advantages such as high efficiency, less occupation of equipment and high heating speed. However, due to the skin effect, ring effect and angle effect, the conventional single-frequency induction heating power supply for rail seam normalizing can not achieve the goal of uniform normalizing. In order to improve the normalizing quality of rail, a new type of three-bridge arm synchronous dual-frequency induction heating power supply is studied in this paper. The structure and advantages of the power supply are analyzed in detail, and the circuit and coupling field simulation are carried out. A hardware experimental platform is built to verify the correctness of the new three-arm synchronous dual-frequency induction heating power supply. Based on the analysis of the technical difficulties of normalizing heat treatment of rail welds, the present industrial dual frequency treatment mode and research status are given. An improved circuit topology and control strategy for synchronous dual-frequency induction heating power supply is proposed to meet the normalizing requirements of rail weld. Secondly, the coupling field simulation analysis between ANsYs Workbench and Maxwell is carried out to verify the excellent characteristics of dual-frequency technology in rail weld treatment. Then, the main circuit structure of the three-leg synchronous dual-frequency induction heating power supply is described in detail, and the working principle and scheme selection of the inverter part are analyzed in detail, and the parameters of each component of the compound resonant circuit are simplified and calculated. The characteristics of compound resonant circuit are analyzed. Finally, a small power hardware experimental platform is built to verify the characteristics of a new type of synchronous dual frequency induction heating power supply. The experimental results show that the scheme is correct and feasible.
【學(xué)位授予單位】:西安理工大學(xué)
【學(xué)位級(jí)別】:碩士
【學(xué)位授予年份】:2017
【分類號(hào)】:TG155.2
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