用于大容量电力电子变压器的兆瓦级中频隔离变压器绕组设计与实验
Gaoya dianqi兆瓦级中频变压器工作频率为数百到数千Hz，是大容量电力电子变压器（PET）的电磁耦合环节关键部件。通过提升变压器工作频率可以显著减小变压器体积，提高系统功率密度，而中高频涡流效应及大电流通流会造成变压器绕组损耗增大，效率降低。传统工频变压器绕组形式和结构因涡流损耗较大的原因将不再适用于兆瓦级中频变压器。目前，针对兆瓦级中频变压器的绕组组成及结构形式的研究较少。文中基于兆瓦级中频变压器绕组的频率特性，讨论不同绕组的理论计算方法。分析不同绕组的电密分布及损耗情况，选取了铜箔绕组作为兆瓦级中频变压器绕组 ...
胡家亮 +5 more
doaj
一种复合膜片压力传感器结构，包括：一单晶硅层，该单晶硅层的一面为凹型；一多孔硅层，该多孔硅层生长在单晶硅层凹型的内表面。本发明在不影响低量程传感器灵敏度的前提下，采用多孔硅和单晶硅复合膜片，减小膜片的非线性形变，从而减小膜片挠度 ...
邢波 +4 more
core
[Study on electrospun film-covered tracheal stents with adaptive release of anti-inflammatory drugs driven by the piezoelectric effect]. [PDF]
Sheng Wu Yi Xue Gong Cheng Xue Za ZhiWang Z +6 more
europepmc +1 more source
[Bone marrow infiltration of large B-cell lymphoma with clinical manifestations similar to systemic lupus erythematosus: A case report]. [PDF]
Beijing Da Xue Xue Bao Yi Xue BanMa D +5 more
europepmc +1 more source
[Performance evaluation of different filtration fractions during daytime continuous renal replacement therapy]. [PDF]
Zhejiang Da Xue Xue Bao Yi Xue BanWang L, Chen Y, Xu G, Xu C.
europepmc +1 more source
[Interpretation of the "European consensus guidelines on the management of respiratory distress syndrome: 2025"]. [PDF]
Zhongguo Dang Dai Er Ke Za ZhiChen XQ, G Sweet D, Shi Y.
europepmc +1 more source
[Comparison of effectiveness between endoscopic and microscopic anterior cervical discectomy and fusion]. [PDF]
Zhongguo Xiu Fu Chong Jian Wai Ke Za ZhiHuang C +9 more
europepmc +1 more source
[Biomechanical study on the combined effects of femoral component rotational malalignment and osteoporosis in unicompartmental knee arthroplasty]. [PDF]
Sheng Wu Yi Xue Gong Cheng Xue Za ZhiZhou T +5 more
europepmc +1 more source
[Research progress on the causes of pain in knee osteoarthritis]. [PDF]
Zhongguo Xiu Fu Chong Jian Wai Ke Za ZhiWei N, Zheng Z.
europepmc +1 more source
[Clinical research progress in 2025 for hepatic fibrosis, cirrhosis, and portal hypertension]. [PDF]
Zhonghua Gan Zang Bing Za ZhiHan YF, Xu XY.
europepmc +1 more source