CAJ | 학술논문

该文分析了晶闸管三相交流调压光耦隔离驱动电路中的过触发现象，即以自然换相点为起点，当触发脉冲大于120时，输出电压有效值可能骤然增加的现象。过触发现象可能造成异步电机失控，从而带来破坏性影响。该文通过理论分析、仿真及实验，分析了过触发现象的原因，并给出了避免过触发现象的控制方法。
해문분석료정갑관삼상교류조압광우격리구동전로중적과촉발현상，즉이자연환상점위기점，당촉발맥충대우120시，수출전압유효치가능취연증가적현상。과촉발현상가능조성이보전궤실공，종이대래파배성영향。해문통과이론분석、방진급실험，분석료과촉발현상적원인，병급출료피면과촉발현상적공제방법。
This paper analyzes over trigger phenomenonfor opto-isolated thyristor AC-voltage regulator,which meansfrom the starting point(natural phase change point), when trigger pulseis greater than 120?, the output voltage RMS may suddenly increase. Over trigger may cause out of control on asynchronous motors, leading to devastating effects.By theoretical analysis, simulationand experiments,this article analyzes the causes of the over trigger phenomenon, and gives control methods to avoid it.