共查询到20条相似文献,搜索用时 80 毫秒
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文章中就铝细丝与铜板或不锈钢板采用电容储能冲击焊工艺的可行性进行论述,同时介绍了电容储能冲击焊机的基本原理、性能和特点。 相似文献
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Flexible Integrated Electrical Cables Based on Biocomposites for Synchronous Energy Transmission and Storage 下载免费PDF全文
Hua Wang Fengshi Li Bowen Zhu Lin Guo Yun Yang Rui Hao Hong Wang Yaqing Liu Wei Wang Xintong Guo Xiaodong Chen 《Advanced functional materials》2016,26(20):3472-3479
It becomes increasingly important to develop integrated systems with the aim of achieving maximum functionality for the state‐of‐the‐art electronic devices. Here, a flexible integrated electrical cable is reported by incorporating biomaterials based fiber supercapacitors into a resistor–capacitor circuit. In this unique integrated configuration, the fiber electrodes are alternately winded along the twisted electric wires, which worked not only as scaffolding to support and strengthen the slight electrodes but also as separators to spatially confine them to avoid short circuit. It exhibits excellent electrochemical performance comparable to conventional transition metal compounds based cells, and can especially realize sophisticated applications in synchronous energy transmission and storage, presenting a new member for the integrated energy storage system family. 相似文献
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基于MATLAB的大规模电路稳态分析 总被引:1,自引:0,他引:1
借助于MATLAB语言强大的矩阵变换与运算功能,利用混合节点法编制含有理想电压源和受控源的大规模电路稳态分析程序。程序具有通用自由的输入格式和直观形象的输出形式,为大规模线性电路稳态分析提供了一个便利且有效的辅助工具。文章介绍了程序总体框图和编程要点,最后给出应用实例,经分析得到各节点电压和各支路电流,并给出相应的相量图和时域波形图。 相似文献
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压电材料可将机械振动能转换为电能,但其产生的电能较小且具有交流特性,有必要建立储能电路将压电振动产生的电能储存起来并输出稳定的直流电。根据压电构造方程,建立压电振动能量收集系统的耦合场数学模型,对输出电压和最大输出功率进行数值模拟。设计与制作了一种以电容为储能介质的储能电路,通过电压比较器和电压调节器来保证稳定的直流输出。实验结果表明该储能电路能提供稳定的2.24V的直流输出电压,储能效率最高可达66.3%,并分析其能耗及误差产生的原因。 相似文献
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The wind energy generation,utilization and its grid penetration in electrical grid are increasing world-wide.The wind generated power is always fluctuating due to its time varying nature and causing stability problem.This weak interconnection of wind generating source in the electrical network affects the power quality and reliability.The localized energy storages shall compensate the fluctuating power and support to strengthen the wind generator in the power system,in this paper,it is proposed to control the voltage source inverter(VSI)in current control mode with energy storage,that is,batteries across the dc bus.The generated wind power can be extracted under varying wind speed and stored in the batteries.This energy storage maintains the stiff voltage across the dc bus of the voltage source inverter.The proposed scheme enhances the stability and reliability of the power system and maintains unity power factor,it can also be operated in stand-alone mode in the power system.The power exchange across the wind generation and the load under dynamic situation is feasible while maintaining the power quality norms at the common point of coupling.It strengthens the weak grid in the power system.This control strategy is evaluated on the test system under dynamic condition by using simulation.The results are verified by comparing the performance of controllers. 相似文献
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交流电机直接转矩控制系统的MATLAB仿真研究 总被引:4,自引:0,他引:4
本文介绍一种基于磁链偏差,转矩偏差和磁链位置来选择直接转矩控制电压矢量开关表,通过对磁链和转矩进行优化设计,提高了直接转矩控制系统的控制性能。应用MATLAB软件对其进行仿真和实验表明:DTC控制具有更好的稳定性,较强的鲁棒性和抑制扰动的能力。 相似文献
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基于MATLAB图形用户界面GUI的电路仿真实验的制作 总被引:13,自引:0,他引:13
基于MATLAB设计向导GUI开发出的电路仿真实验具有图形用户界面良好、使用方便的特点。本文首先介绍了MATLAB的图形用户界面GUI面板,然后结合具体电路介绍了利用MATLAB的GUI设计向导制作电路仿真实验的方法及过程.最后给出电路仿真实验用户界面及仿真实验运行结果。 相似文献
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为解决数控机床加工中意外掉电退刀、伺服单元外接制动电阻产生能耗等问题,提出了一种超级电容储能的双向逆变电路,使得伺服系统在突然断电状态下,储能模块能够继续短时地给数控机床系统供电,完成断电回退的功能。该电路可以提供更高的输出电压和占空比,且在应用中可以取消伺服单元外接制动电阻而将制动能量循环利用,同时提出了相应的控制策略。该电路包括Buck/Boost电路、信号采样电路、PWM逻辑控制电路和互锁驱动电路,通过调节两路互为180°的PWM波占空比及充、放电信号来实现升、降压闭环控制,从而完成能量的双向传递。该拓扑简单、高效,性能稳定,以最少的功率器件实现大功率转换及输出。最后,实验波形验证了所提方案的可靠性。 相似文献