24 September 2013, Shenzhen--ZTE today announced the release of the BigMatrix 9900 series of data center switches, the world＇ s largest-capacity data center switches. The BigMatrix 9900 product family comprises data...24 September 2013, Shenzhen--ZTE today announced the release of the BigMatrix 9900 series of data center switches, the world＇ s largest-capacity data center switches. The BigMatrix 9900 product family comprises data switches with the largest capacity in the world. The switches are designed large cloud computing and big data scenarios and allow for higher-density deployment in data centers. Each single slot can support up to 144 10G ports, 36 40G ports, or 12 IOOG ports. The Big Matrix 9900 series comprises four switch models-9916, 9912, 9908, and 9904-each of which supports a maximum switching capacity of 84.48 Tbps.展开更多
LCC-S型磁耦合谐振式无线电能传输WPT(wireless power transfer)系统在不同参数配置下的输出特性具有较大的差异。针对运载火箭箭上负载功率变化范围大的特点,建立箭地WPT系统稳态效率模型,首次提出以平均功效积作为优化目标的谐振网络...LCC-S型磁耦合谐振式无线电能传输WPT(wireless power transfer)系统在不同参数配置下的输出特性具有较大的差异。针对运载火箭箭上负载功率变化范围大的特点,建立箭地WPT系统稳态效率模型,首次提出以平均功效积作为优化目标的谐振网络参数设计方法,提升系统在全功率范围下的整体输出特性。在此基础上,为实现逆变器开关管软开关,建立考虑高次谐波的逆变器输出电流时域模型,综合考虑谐振参数扰动对逆变器开通/关断损耗及电压增益等指标的影响,给出了谐振网络的扰动设计方法。最后通过仿真验证了模型的合理性及参数配置方法的优越性。展开更多
该文提出一种双边磁通切换永磁直线(double-sided linear flux-switching permanent magnet,DLFSPM)电机及其驱动系统。该电机的永磁体和电枢绕组均置于初级定子,次级动子仅由导磁铁芯构成,并且次级无轭部。因此,该电机具有结构简单、...该文提出一种双边磁通切换永磁直线(double-sided linear flux-switching permanent magnet,DLFSPM)电机及其驱动系统。该电机的永磁体和电枢绕组均置于初级定子,次级动子仅由导磁铁芯构成,并且次级无轭部。因此,该电机具有结构简单、可靠性高等优点,适用于高速电磁推进场合。基于有限元法分析该电机的结构特性、绕组互补特性和静态电磁特性。在此基础上,建立电机的数学模型并确定电机的控制策略。基于Matlab/Simulink构建DLFSPM电机和驱动系统的仿真模型,并分析DLFSPM电机的动态响应。加工制造DLFSPM实验样机并完成该电机的驱动控制平台和实验研究。仿真和实验结果表明,DLFSPM电机反电势正弦对称、动子简单可靠,具有良好的动态响应。展开更多
文摘24 September 2013, Shenzhen--ZTE today announced the release of the BigMatrix 9900 series of data center switches, the world＇ s largest-capacity data center switches. The BigMatrix 9900 product family comprises data switches with the largest capacity in the world. The switches are designed large cloud computing and big data scenarios and allow for higher-density deployment in data centers. Each single slot can support up to 144 10G ports, 36 40G ports, or 12 IOOG ports. The Big Matrix 9900 series comprises four switch models-9916, 9912, 9908, and 9904-each of which supports a maximum switching capacity of 84.48 Tbps.
文摘LCC-S型磁耦合谐振式无线电能传输WPT(wireless power transfer)系统在不同参数配置下的输出特性具有较大的差异。针对运载火箭箭上负载功率变化范围大的特点,建立箭地WPT系统稳态效率模型,首次提出以平均功效积作为优化目标的谐振网络参数设计方法,提升系统在全功率范围下的整体输出特性。在此基础上,为实现逆变器开关管软开关,建立考虑高次谐波的逆变器输出电流时域模型,综合考虑谐振参数扰动对逆变器开通/关断损耗及电压增益等指标的影响,给出了谐振网络的扰动设计方法。最后通过仿真验证了模型的合理性及参数配置方法的优越性。
文摘该文提出一种双边磁通切换永磁直线(double-sided linear flux-switching permanent magnet,DLFSPM)电机及其驱动系统。该电机的永磁体和电枢绕组均置于初级定子,次级动子仅由导磁铁芯构成,并且次级无轭部。因此,该电机具有结构简单、可靠性高等优点,适用于高速电磁推进场合。基于有限元法分析该电机的结构特性、绕组互补特性和静态电磁特性。在此基础上,建立电机的数学模型并确定电机的控制策略。基于Matlab/Simulink构建DLFSPM电机和驱动系统的仿真模型,并分析DLFSPM电机的动态响应。加工制造DLFSPM实验样机并完成该电机的驱动控制平台和实验研究。仿真和实验结果表明,DLFSPM电机反电势正弦对称、动子简单可靠,具有良好的动态响应。
