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为满足在电网发生故障时风电机组需保持与电网连接并向系统不间断供电的要求,提出
了双馈风力发电机的动态模型、变流器模型、变流器保护及电网模型,以研究双馈风力发电机的暂
态特性.以1·5MW SUT-1500双馈风力发电机为原型,由一个无穷大电源等效电网模型,变流器模
型采用定子磁链的定向电流矢量控制方法,利用PSCAD软件对双馈电机的暂态特性进行仿真.仿
真结果表明,矢量控制能够实现双馈电机的有功、无功解耦,并可改善系统的低压穿越能力.
-To meet the power f
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PQ分解法潮流计算程序。既可以用于高压输电网的潮流解算,又可以用于低压配电网的潮流解算,还可以同时解算输电网
加配电网的混合潮流问题。-PQ decomposition process flow calculation. Both high-voltage transmission networks can be used to calculate the trend, but also can be used in the trend of low voltage distribution
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潮流计算源程序。
既可以用于高压输电网的潮流解算,又可以用于低压配电网的潮流解算,还可以同时解算输电网加配电网的混合潮流问题。
-Source flow calculation. Both high-voltage transmission networks can be used to calculate the trend, but also can be used in the trend of low voltage distribution network solver, bu
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介绍一种最新推出的电力载波调制解调器芯片ST7538的基本原理,给出ST7538的主要控制电路和接口电路,讨论应用该芯片后些注意事项。-In this paper,the power line monitor system with stable performance,good reliability and accurate warning has been designed,in which street light monitoring and controlling and elect
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DSP-based low-voltage distribution network design of harmonic measurement instrument
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既可以用于高压输电网的潮流解算,又可以用于低压配电网的潮流解算,还可以同时解算输电网
加配电网的混合潮流问题,程序为PQ 分解法.-Both the trend for high-voltage transmission grid solver, but also the trend for low voltage distribution network solver, solver can also increase with the power transmission grid hy
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电压比较器(Vo ltage Com p arator)是一种常见的模拟集成电路,。电压比较器通常有两个输入端和一个输出端,参见图1.1。
电压比较器的功能是比较两个输入电压的大小:当同相输入端电压高于反相输入端时输出为
IGH;当同相输入端电压低于反相输入端时输出为LOW。单片机教程网:http://www.ipbb.cn电压比较器的主要用途:波形的
产生和变换、模拟电路到数字电路的接口,等等。 -The voltage comparator (Vo ltage Com p ara
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介绍了关于分布式电源接入低压配电网络的位置对配电网电压稳定裕度、系统稳定方面的影响-Describes the impact of distributed power access location for low-voltage distribution network distribution network voltage stability margin, the system stability of
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低压配电网理论线损分析计算 本科论文 word版本,不错-Low voltage distribution network theoretical line loss analysis and calculation of undergraduate thesis word version, good
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The computer s network interface card sends zeros and ones down the cable by
changing the voltage on the wires from in a prearranged cadence.
WiFi simply replaces these cables with small, low-powered two-way radios.
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本模型采用矢量控制与SVPWM相结合的方法,应用在低压微电网中。直流源电压为600V,逆变器输出电压为380V,可实现稳定功率输出。模型对网侧控制策略中每一模块尽量做出了说明,方便初学者更快理解三相逆变器控制策略的实现方法,运行效果非常好。(This model adopts the method of combining vector control with SVPWM, which is applied in low voltage microgrid. The DC source vol
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