... electronic formula || 电子公式，电子式 electronic frequency converter || 电子频率转换器 electronic fund transfer system || 电子资金转移系统 ...
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Feed roller is driven by an electronic frequency converter which permits stepless variation of its speed and is controled to be synchronized with doffer by the computer.
给棉罗拉采用调频电机传动，实现无级变速，通过计算机控制与道夫传动同步。
The principle of in frequency converter using large high-voltage power electronic device IGBT was discussed. And the cause of fault was analyzed as well as the lesson should be learned.
叙述了大功率高压电力电子器件IGBT变频传动装置整流器系统的原理，着重分析了故障原因及应吸取的教训。
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