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目前,高频感应加热设备的整流大都采用大功率高压硅整流器取代耗能大的闸流管整流器。实践证明:高压硅整流器有明显的节能效果,能提高设备的效率。然而,使用这种高压硅整流器,设备的整流直流电压不能调节,不能满足各种零件对高频热处理的需要。在外电压较高的情况下(特别是在晚上),高频设备输出的直流电压很高,达到15千伏。这样高的电压极易损
At present, the rectification of high-frequency induction heating equipment mostly uses high-power high-voltage silicon rectifier to replace the energy-hungry thyristor rectifier. Practice has proved that: high-voltage silicon rectifier has obvious energy-saving effect, can improve the efficiency of the equipment. However, with this high-voltage silicon rectifier, the rectified DC voltage of the device can not be adjusted and can not meet the needs of various parts for high-frequency heat treatment. In the case of high external voltage (especially at night), high-frequency equipment output DC voltage is very high, reaching 15 kV. Such a high voltage is extremely vulnerable