PC机电压暂降敏感度试验研究

PC机更新换代快,目前新型与早期PC机电压暂降耐受特性可能存在较大差异。文中首先通过对PC机电源与主板电路分析,指出了结构变化以及嵌入缓解方案对PC机暂降敏感度的影响。然后,制定了试验方案,以Chroma 61860为暂降发生源,以主流品牌的不同生产日期的3台PC机(其中2台同品牌同批次)为试品,研究了不同运行工况下的PC机暂降敏感度,并将所得试验曲线与现有的PC机暂降耐受能力范围进行对比。结果表明,运行工况是影响PC机暂降敏感度的重要因素之一,而目前新型PC机暂降耐受水平已得到明显提升。

Experimental Study on Sensitivity of PC to Voltage Sags

There may be great difference in tolerance of early and present new type PC to voltage sags due to fast update of PC technique. In the paper, PC power supply and motherboard circuit are analyzed firstly. And the impact on sag-sensitivity of PC is pointed out because of structure changing and embedded solutions. Then an experimental program is developed and Chroma 61860 is used as voltage sag generator. Three mainstream PCs that were produced in different periods are selected as the representatives (two PCs are the same brand and batch among them). Under different operating conditions, sensitivity of PC to voltage sags is researched. And test curves are compared with the existing sag-tolerance range about PC. The results show that the PC operating condition is one of the important factors that affect sensitivity of PC to voltage sags. And the sag-tolerance of present PC has been enhanced markedly.