CAJ | 학술논문

分析了起重机大车变频调速时的过流故障，依据电机学理论确定了故障产生的原因为大吨位、高速度起重机在快速加速时电机转矩超过变频器输出能力导致的过流，提出了故障处理方法，对于该类型起重机的机械、电气设计调试工作具有参考意义。
분석료기중궤대차변빈조속시적과류고장，의거전궤학이론학정료고장산생적원인위대둔위、고속도기중궤재쾌속가속시전궤전구초과변빈기수출능력도치적과류，제출료고장처리방법，대우해류형기중궤적궤계、전기설계조시공작구유삼고의의。
The paper analyzes the overcurrent fault of the crane at frequency control,determines that the fault is caused by the overcurrent arising from motor torque exceeding output capacity of the frequency converter when the large-ton-nage high-speed crane accelerates,puts forward the disposal method,which provide referential significance for mechanical and electrical design and commissioning of such cranes.