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This paper represents the modeling and simulation of 2 MW Direct Drive PMSG Wind energy conversion system (WECS). The modelling of wind turbine and PMSG is carried out in simulink to determine its parameter. WECS consists different components namely Wind turbine, Generator, rectifier-inverter, controller system including transformer, grid etc. The PMSG and converter model are established in the d-q model. Keywords: PMSG, WECS, Wind turbine, rectifier, inverter, MATLAB/SIMLINK, transformer, Grid

在混沌研究中，求系统整体LE指数的matlab源代码(In the study of chaos, seeking overall system LE index matlab source code)

图论算法及Matlab程序代码含注释 很详尽(Graph Algorithms and Matlab code with comment)

cnv_encd.m　卷积编码程序 viterbi.m　　卷积译码程序 其它的是viterbi.m中用到的子函数(cnv_encd.m convolution coding procedures viterbi.m other convolution decoding process is used in viterbi.m Functions)

实现dtmf双音多频信号的matlab仿真编码和解码，采用coertzel算法。(Methods of measurement for pushbutton telephone with DTMF )

说明：  AR谱估计算法的matlab仿真，包括Yule-Walker方法、协方差方法、修正协方差方法和burg递推法等(AR spectral estimation algorithm matlab simulation, including the Yule-Walker method, covariance method, modified covariance method and the recursive law burg)

主成份分析的源码，简单易懂，有效代码不超过十行，有注释，注释中注明了代码出处。(The source code of the principal component analysis, easy to understand and effective code not more than ten line, have comments, comments indicate the source the code.)

利用重复轨道卫星数据计算轨道之间的基线（即空间距离）实现数据获取时间内任意位置的基线长度，并存入文件中。(Repeat orbit satellites using data between tracks baseline (i.e. spatial distance) for data acquisition time of the baseline length anywhere within and into a file.)

利用经典music算法对来波方向进行仿真测向(Direction finding by music algorithm)

搭建光伏系统仿真模型，运用最大功率跟踪，能够使系统输出电压稳定(Build a photovoltaic system simulation model, using MPPT, enabling the system output voltage stability)