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Constant Power Control for Medium-Frequency Induction Furnaces Used in Melting
Sep 17,2020
During melting, Medium-frequency power supply It will always automatically track and control the maximum allowable cut-off value and pressure cut-off value. The high power density ensures that the intermediate-frequency voltage rises to its rated value within a short period, and the DC current stabilizes at its maximum rated value as quickly as possible, thereby guaranteeing that the intermediate-frequency power supply consistently operates at a power factor above 0.92 and achieves full-power melting. Therefore, on the one hand, the intermediate-frequency power supply must feature sophisticated constant-power control and a dual closed-loop control system for both current and voltage in P-power mode; on the other hand, furnace operators must add materials to the furnace reasonably and promptly. Consequently, if the electric furnace cannot deliver high power during the initial stage of the melting process, the power factor will be low, thermal losses will not decrease, and energy consumption will remain high. Therefore, Electric furnace Whether or not a high power factor can be maintained when supplying power to the furnace is also what distinguishes between high and low energy consumption and determines whether a company can operate in an “environmentally friendly” manner. 4. Insulation Medium-frequency electric furnace The use of large-tonnage molten iron insulation has long been the dominant approach in core power-frequency induction furnaces. The successful domestic application of coreless medium-frequency induction furnaces as large-tonnage insulation furnaces represents a groundbreaking achievement. Currently, a 50-ton hot-metal insulation coreless medium-frequency induction furnace has been put into operation. As an insulation furnace, the thyristor-based coreless medium-frequency induction furnace offers significant advantages over conventional core-type power-frequency induction furnaces. Moreover, 20 years of practical application experience have demonstrated both the feasibility and economic viability of this technology.
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Kangda Electric Furnace specializes in the manufacture of the following equipment: KGCL series medium-frequency power supplies, KGPS series medium-frequency power supplies, GTR series medium-frequency induction heating furnaces...
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Address: Yuhe Industrial Park, Weicheng District, Weifang City, Shandong Province
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