不间断电源UPS中逆变变压器的寿命评估  

Life research of inverter transformer in UPS

作　　者：周蓉 姚志慧 杨海涛 

机构地区：[1]广东省东莞市质量计量监督检测所,广东东莞523120 [2]立德电子股份有限公司,广东东莞523100

出　　处：《电子技术应用》2009年第6期88-92,共5页Application of Electronic Technique

摘　　要：针对大型UPS中低频逆变变压器的负载特性,结合目前应用最广泛的NOMEX绝缘系统的结构特点,对影响UPS中变压器内在寿命的一些因素,从材料老化机制上做出分析,并且以实际案例计算和比较了不同负载状态对绝缘老化和机械老化的显著影响,指出混合绝缘设计、提高耐温等级、控制制造稳定性以及合理选型与使用是提高UPS中变压器产品寿命的重要手段。对目前行业中看似不合乎理论的设计选择基准作出尝试性的理解说明。Based on working situations of UPS inverter transformers and life deterioration mechanism of Class H Nomex insulation system, this paper lists out the inherent and outside elements those influence much of transformers working life. Through caleulating of one transformer sample, gives out theory analysis methods and calculation formulas. The strategy to improve life performance come out as Hybrid insulation, thermal running margin, continuous manufacture level and proper application occasions.

关 键 词：不间断电源 老化机制 阿伦纽斯曲线 介电强度 机械强度 电晕效应 负载状态 

分 类 号：TM464[电气工程—电器] TM402