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    • 4. 发明授权
    • Device and method for inductive billet heating with a billet-heating coil
    • 用钢坯加热线圈进行感应钢坯加热的装置和方法
    • US06815649B2
    • 2004-11-09
    • US10201448
    • 2002-07-23
    • Stefan Beer
    • Stefan Beer
    • H05B608
    • H05B6/101H05B6/06
    • A device for inductive billet-heating includes a single or multi-layer billet-heating coil (4) for a round billet (5), in which the billet-heating coil (4) is made up of one or more consecutive, galvanically separated zones. The zones are supplied with electrical energy from a three-phase network by means of an electrical switching device and a control unit. The billet-heating coil (4) includes multiple, synchronically regulated zones (Z1, Z2 through Zn) with reference to frequency and phase of inductive field. For a current feed to each zone (Z1 through Zn) of the billet-heating coil (4), a converter (2) with variable frequency and a plurality of modules is provided. The converter includes plurality of power-moderate closed units with DS-network feed and synchronization of phase and frequency of an output voltage.
    • 用于感应坯料加热的装置包括用于圆钢坯(5)的单层或多层坯料加热线圈(4),其中坯料加热线圈(4)由一个或多个连续的电流分离 区域。 这些区域通过电气开关装置和控制单元从三相网络供应电能。 参考感应场的频率和相位,坯料加热线圈(4)包括多个同步调节区(Z1,Z2至Zn)。 对于坯料加热线圈(4)的每个区域(Z1至Zn)的电流馈送,提供具有可变频率和多个模块的转换器(2)。 该转换器包括具有DS网络馈电和输出电压的相位和频率同步的多个功率中等闭合单元。