Gaoya dianqi, 2015 基于RT-LAB实时仿真平台,研究了实时仿真技术在基于模块化多电平换流器（MMC）的柔性直流输电系统（HVDC）中的应用。建立了基于MMC的柔性直流输电系统的实时仿真模型,并将RT-LAB的实时仿真结果与PSCAD/EMTDC的离线仿真结果进行了对比验证。两种仿真结果在暂态和稳态下都比较一致,这说明通过RT-LAB可以得到MMC高压直流输电系统的正确仿真结果。还对两种仿真方法的仿真时间进行了对比,说明通过RT-LAB的实时仿真可以大幅度提高对MMC换流器的仿真效率。研究结果为采用RT ...
汪谦 +4 more
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Gaoya dianqi模块化多电平变换器（modular multilevel converter，MMC）作为规模化光伏直流系统常用的并网方案，其可靠运行是实现规模化光伏应用的重要前提。近年来许多研究通过优化热分布特性来提高变换器的可靠性，但目前尚缺乏以MMC为研究对象，总结分析其电热特性以及相应的优化方法的相关研究。因此文中分析了MMC的热分布特性及其影响因素，并总结了其电热优化调控方法研究的最新进展。首先，分析了MMC子模块内部和同桥臂内子模块间的热分布特性及导致其差异的原因。此后 ...
王丰, 夏镔冰, 勾雅婷, 史书怀
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Gaoya dianqi基于模块化多电平矩阵变换器（M3C）的柔性低频输电系统，其在远距离大容量输电、城市电网和海上风电送出等领域具有较大的应用潜力，近年来得到了广泛关注。目前对该系统启动控制策略的研究还较少，为此文中对该领域开展相关研究。首先对柔性低频输电系统结构和M3C基本原理进行研究，分析出了启动过程中将会面临的问题。然后结合全桥子模块特点为M3C设计合理的充电策略，并以双端M3C柔性低频输电系统为对象设计合理的启动逻辑，确保启动过程中低频断路器无冲击合闸并实现站间无扰动连接 ...
张树楠 +4 more
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[Development and electrophysiological validation of a temporal interference transcranial magnetic stimulation system for mice]. [PDF]
Sheng Wu Yi Xue Gong Cheng Xue Za ZhiCui C, Wang T, Zhang Y, Zheng W, Xu G.
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[Research progress on flexible wearable sensors for health monitoring]. [PDF]
Sheng Wu Yi Xue Gong Cheng Xue Za ZhiChen X, Xu G.
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[Closed-loop regulation system for paralyzed lower limb joint movement based on electrical stimulation of spinal central pattern generator]. [PDF]
Sheng Wu Yi Xue Gong Cheng Xue Za ZhiShen X +6 more
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[Brain-controlled unmanned aerial vehicle system based on meta brain computer interface open-source software platform]. [PDF]
Sheng Wu Yi Xue Gong Cheng Xue Za ZhiLi A +5 more
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[Advances in application of digital orthopedic technology in total hip arthroplasty for developmental dysplasia of hip]. [PDF]
Zhongguo Xiu Fu Chong Jian Wai Ke Za ZhiZhang B, Li H, Li M, Kong X, Chai W.
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[Evaluation of an interpretable 12-lead ECG automatic diagnosis model based on deep feature fusion]. [PDF]
Nan Fang Yi Ke Da Xue Xue BaoLu X +5 more
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[Image classification of osteoarthritis based on improved shifted windows transformer and graph convolutional networks]. [PDF]
Sheng Wu Yi Xue Gong Cheng Xue Za ZhiJiang L, Cao H, Ma Z.
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