delered

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 failure to keep their wind turbine grid-connected uninterruptible power supply to the system requirements, proposed doubly-fed wind turbine dynamic models of converter model, inverter protection and network model to Study of double-fed wind generator transient characteristics. to 1.5 MW SUT-1500 double-fed wind turbine prototypes, by an infinite power grid equivalent model of converter model uses the stator flux orientation of current vector control methods, using PSCAD software to double-fed motor simulation of transient characteristics. The simulation results show that vector control can be achieved double-fed motor active and reactive decoupling, and can improve the system through the capacity of low-voltage.)

安装SQL 2012的图文说明文件，按步执行，简单(Installation of SQL 2012 illustrated document,Step by step,simple)

delphi编写的程序更新,查找update.ini并下载更新程序~!-delphi procedure for the preparation of updated update.ini search and download the update ~!

说明：  2X2 MIMO-OFDM 系统STBC 编译码Matlab实现(Matlab implementation of 2X2 MIMO-OFDM system STBC coding and decoding)

vb编程器界面,实现基本的编程,写入,擦除,校验,芯片选择等功能-vb programmer interface to achieve basic programming, write, erase and testing, functional chip choice

充电站规划中考虑容量、燃料、配送要求等信息进行充电站的电源供给(Power supply of charging station considering capacity, fuel, distribution requirements and other information in planning of charging station)

To record alumni contact information

fluent Magnetohydrodynamics (MHD) Module Manual

％ 该Matlab程序基于牛顿－拉夫逊算法，用于计算已知导纳矩阵、PQ节点、PV节点、平衡节点(UA)的电力网络潮流 ％ U - 各节点母线电压 S - 各节点注入功率 S_net - 电力网络总损耗 ％ PQ_P - 实算PQ节点注入有功功率 PQ_Q - 实算PQ节点注入无功功率 ％ delt_PQ_P - 实算PQ节点有功功率修正值 delt_PQ_Q －实算PQ节点无功功率修正值 ％ delt_UA_P - 实平衡节点有功功率修正值 delt_U_2 - 实平衡节点电压平方修正值 ％ delt_PQV - 实算P Q U^2修正值 J - 雅可比矩阵 ％ e - 电压实部 f - 电压虚部 delt_ef - 电压实部与虚部修正值- The Matlab program based on the Newton- Raphson algorithm is used to calculate the admittance matrix is known, PQ node, PV node, the node balance (UA) the trend of the electricity networks U- the node bus voltage S- each node injection power S_net-- The total loss of electric power networks PQ_P- operator PQ is injected into active nodes PQ_Q- operator PQ is injected reactive power node delt_PQ_P- is considered the correct value of active power PQ node delt_PQ_Q- really count PQ node reactive power to amend the value of delt_UA_P- real active power balance of the correct value of the node delt_U_2- node voltage balance is the correct value of the square o

说明：  迪文串口屏和stc51 单片机通讯 迪文屏的指令集(Communication between Devon Serial Port Screen and stc51 Single Chip Microcomputer)