Triggered vacuum switches(TVSs)have fast growing applications in the field of power system and pulse power.The relation between triggering parameters of triggering system,such as triggering voltage and triggering powe...Triggered vacuum switches(TVSs)have fast growing applications in the field of power system and pulse power.The relation between triggering parameters of triggering system,such as triggering voltage and triggering power,between the triggering time delay and its scatter of TVS had been obtained through series of experiments.The result can be adopted as the steering for high-power controller design and application of TVS.A steepened high-voltage triggering pulse is introduced in the main high-voltage generating circuit.As a result,the triggering time delay and its scatter can be decreased remarkably.Synchronous switch technology is imported to control the triggering phase at the crest of applied voltage on TVS.The Triggering characteristic of TVS under alternating current(AC)and direct current(DC)load has been investigated emphatically.Given the identical triggering parameter of triggering system,DC condition is prior to AC on the triggering probability and stability markedly.Such conclusion can be drawn,for AC condition,TVS would require much for the triggering system.展开更多
为应对当今社会发展所面临的能源、环境、经济等压力,以5G基站、充电桩等为代表的基础设施建设成为新时期经济发展的重点。新型基础设施电力供应系统的选择和建设至关重要。该文首先概述新基建的内容演变和意义,分析普遍具有负荷直流化...为应对当今社会发展所面临的能源、环境、经济等压力,以5G基站、充电桩等为代表的基础设施建设成为新时期经济发展的重点。新型基础设施电力供应系统的选择和建设至关重要。该文首先概述新基建的内容演变和意义,分析普遍具有负荷直流化的特征。其次介绍新一代低压直流供用电系统(low voltage direct cur-rent supply and utilization system,LVDCSUS)及其内涵与特征,然后分析新基建不同领域电力供应系统的共性和个性需求,指出以LVDCSUS作为5G基站、数据中心、新能源汽车充电桩、直流绿色建筑、智能家居、工业互联网、农村及边远地区等7种不同领域基础设施电力供应系统的优势。进而从顶层设计、政策支持、思维方式、技术创新和核心设备、发展路线等维度探讨了新基建背景下LVDCSUS的发展方向并提出具体建议,提出关键技术和核心设备的研发方向,提出直流系统全链条、生态建设的建议。最后给出结论,在供用电领域,新一代低压直流供用电系统已经可以成为交流电源的辅助和替代,并有望成为一种新型的数字化供用电系统。展开更多
基金This work was carried out under the support of Guangxi Key Laboratory of Manufacturing System and Advanced Manufacturing Technology(No.0842006_025_Z).
文摘Triggered vacuum switches(TVSs)have fast growing applications in the field of power system and pulse power.The relation between triggering parameters of triggering system,such as triggering voltage and triggering power,between the triggering time delay and its scatter of TVS had been obtained through series of experiments.The result can be adopted as the steering for high-power controller design and application of TVS.A steepened high-voltage triggering pulse is introduced in the main high-voltage generating circuit.As a result,the triggering time delay and its scatter can be decreased remarkably.Synchronous switch technology is imported to control the triggering phase at the crest of applied voltage on TVS.The Triggering characteristic of TVS under alternating current(AC)and direct current(DC)load has been investigated emphatically.Given the identical triggering parameter of triggering system,DC condition is prior to AC on the triggering probability and stability markedly.Such conclusion can be drawn,for AC condition,TVS would require much for the triggering system.
文摘为克服由于常规直流(direct current,DC)线性稳压电源的调整管集射极或集成稳压器I/O端间的压降较高,需要输入交流(alternating current,AC)信号源电压较高,且调整管或集成稳压器外接较大体积的散热器,能源和资源都比较浪费,使得其存在稳压电源内部功耗较高、体积和质量较大、浪费能量和资源、成本较高、性价比较低、不符合低碳环保和可持续发展趋势等问题,采用电子设计自动化(electronic design automation,EDA)辅助设计、仿真测试与优化方法,通过合理优化调整电容、电阻参数值,改变稳压控制策略等措施,显著降低±5 V DC线性稳压电源内部功耗,并适当降低纹波噪声.通过优化分压电容和偏置电阻匹配使其双路输出对称化.进而采用互补功率三极管扩展输出电流改善其带负载能力.最后,采用万用PCB板制作了一款所设计的±5 V DC线性稳压电源演示样品,并进行了动态实验测试.实验结果表明其具有功耗低、带载宽、成本低、体积小、重量轻和纹波小等优点,这些改善使其能够满足当前和未来低碳环保和可持续发展的实用电子系统供电应用要求.
文摘为应对当今社会发展所面临的能源、环境、经济等压力,以5G基站、充电桩等为代表的基础设施建设成为新时期经济发展的重点。新型基础设施电力供应系统的选择和建设至关重要。该文首先概述新基建的内容演变和意义,分析普遍具有负荷直流化的特征。其次介绍新一代低压直流供用电系统(low voltage direct cur-rent supply and utilization system,LVDCSUS)及其内涵与特征,然后分析新基建不同领域电力供应系统的共性和个性需求,指出以LVDCSUS作为5G基站、数据中心、新能源汽车充电桩、直流绿色建筑、智能家居、工业互联网、农村及边远地区等7种不同领域基础设施电力供应系统的优势。进而从顶层设计、政策支持、思维方式、技术创新和核心设备、发展路线等维度探讨了新基建背景下LVDCSUS的发展方向并提出具体建议,提出关键技术和核心设备的研发方向,提出直流系统全链条、生态建设的建议。最后给出结论,在供用电领域,新一代低压直流供用电系统已经可以成为交流电源的辅助和替代,并有望成为一种新型的数字化供用电系统。
