Gaoya dianqi高频变压器为功率变换器的核心磁性元件，利用仿真软件对高频变压器进行电磁场仿真分析，可以节省设计时间、优化结构、提高效率。在对电磁场和温度场的控制方程、边界条件进行详细分析的基础上，建立高频变压器电磁场—温度场耦合计算流程。利用Infolytica的MagNet和ThermNet仿真软件，对一台5 kHz/15 kW纳米晶合金磁芯三相五柱式高频变压器的漏磁场、磁芯损耗、绕组损耗和温度场进行有限元法计算，开展空载和短路实验研究，验证计算方法的准确性。
陈彬 +4 more
doaj
[Value assignment technology for 1，3-oleic-2-palmitic triglyceride purity reference material]. [PDF]
Se PuWang XY +6 more
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Dianci bileiqi由于油纸绝缘套管内部缺陷温度难以测定，局部过热缺陷在初期很难发现，因此开展内部过热缺陷与套管本体温升的关联性研究对现场运维具有重要的指导意义。本研究基于电磁-热耦合方法，建立了110 kV油纸绝缘套管在局部过热缺陷下内部与外部温度分布仿真分析模型，计算了不同接触电阻情况下套管整体温度场分布，并研究了环境温度、故障时间、温度日变化等工况对套管内部与伞裙温升的影响。结果表明：10倍接触电阻劣化情况下套管表面伞裙温升2.3 ℃，为套管早期故障表征；外界环境温度较低时套管伞裙表面温升绝对值较高 ...
陈晋鹏 +5 more
doaj
[Innovative undergraduate teaching practice integrating MassWorks mass spectrometry analysis technology with gas chromatography-low resolution mass spectrometry]. [PDF]
Se PuLi ZX +7 more
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[Innovation in experimental teaching practice based on miniature mass spectrometer： from mass spectrometry principles to applications]. [PDF]
Se PuLi L, Hong J, Yu XH, Gao PF, Zhai YB.
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Gaoya dianqi气体绝缘金属封闭开关设备的母线温升直接影响设备的可靠性，其热点温度的推演对设备安全稳定运行具有重要意义。文中基于真型三相共筒GIS构建电磁场—流场—温度场的多物理场耦合仿真模型，搭建GIS母线温升试验平台以验证仿真模型的准确性。在此基础上，利用机器学习算法对仿真数据进行训练并反演GIS母线内部热点温度。将温升试验中的外壳温度数据作为反演网络的输入，通过对比输出的母线反演温度值与实测值来验证反演的有效性与准确性，为基于仿真的GIS内部热故障诊断及预测提供可能。此外，还对比分析了不同外壳测温点组合的反演结果，
张诗涵 +5 more
doaj
[Simultaneous determination of five common pyrethroid metabolites in urine using liquid-liquid extraction coupled with ultra performance liquid chromatography-tandem mass spectrometry]. [PDF]
Se PuZhang XM, Meng XJ, Hu Y, Liu XD.
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[Synthesis of a temperature-responsive multimodal motion microrobot capable of precise navigation for targeted controllable drug release]. [PDF]
Nan Fang Yi Ke Da Xue Xue BaoZhao X +5 more
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[Diabetic foot care: full-lifecycle management driven by digital intelligent technologies]. [PDF]
Zhongguo Xiu Fu Chong Jian Wai Ke Za ZhiChen L, Ran X.
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[Bifunctional biomaterials: An innovative strategy for synergistic bone tumor therapy and bone regeneration]. [PDF]
Zhongguo Xiu Fu Chong Jian Wai Ke Za ZhiFeng W, Chang B, Wang C, Fan B.
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