摘要
Abstract
Through analysis on power source circuit of IGBT inverter welding machine, it regarded that electromagnetic interference came from common-mode noise which caused by electromagnetic interference of input circuit, high-frequency noise and parasitical parameters, as well as super high frequency noise caused by the switching activities of power device . Some relevant measures were taken in hardware and software, the inspecting circuit, the power source of main control panel and some other measures like insulation and earthing were discussed in hardware design, and in software design, such measures as the software trap, digital filter, WOT and etc . The above measures can preferably restrain EMI, so that the interferes to other equipment and pollution to the grid can also be controlled in certain standard .关键词
逆变焊机/电源/电磁干扰/抑制Key words
inverter welding machine/ power source/ electromagnetic interference/ restrain分类
矿业与冶金
