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Discussion on Output Characteristics of High-frequency UPS Driving High-power Inductive Load

机译：探讨高功率感应负荷的高频UPS输出特性

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When the power supply system of a hydraulic system was reformed, oscilloscopes and power quality testers were used to measure the output characteristics of UPS driving different numbers of motors. Tests showed that the output characteristics of UPS are the same as those of commercial power when driving a single motor, but the current waveform would periodically oscillate after driving two motors. Changing the impedance matching of the system neither suppresses this phenomenon nor changes the change period of current. Finally, two comparative tests were designed to drive different motors with UPS of the same model and different motors with UPS of other brands. The experimental results showed that the periodic change of current waveform is related to the inherent output characteristics of high-frequency UPS.
机译：当改革液压系统的电源系统时，使用示波器和功率质量测试仪测量驱动不同数量的电动机的UPS的输出特性。测试表明，在驱动单个电动机时，UPS的输出特性与商业电力相同，但在驱动两个电动机之后，电流波形将周期性振荡。改变系统的阻抗匹配既不抑制这种现象也没有改变电流的变化期。最后，设计了两个比较试验，以驱动不同的电机，其中包含相同型号的UPS和具有其他品牌的不同电机。实验结果表明，电流波形的周期性变化与高频UPS的固有输出特性有关。

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