Sinusoidal-PWM-inverter

Two-level Inverter PWM.........

电力系统潮流计算程序(极坐标、带IEEE算例)，内含14，,3,118节点的数据。(Power flow calculation program (polar coordinates with IEEE numerical example), containing 14 data 3,118 nodes.)

说明：  求解单自由度振动 可以直接输入参数计算 简单方便(It is simple and convenient to input parameters directly for solving single degree of freedom vibration)

小波滤波器构造和消噪程序（2个）此函数用于研究Mallet算法及滤波器设计和消噪(Wavelet de-noising filter structure and process (2) This function used to study the Mallet algorithm and filter design and de-noising)

说明：  测量图片中的建筑物角度，R2008B以上版本运行(Measurement of the angle the picture of the building, R2008B or later to run)

This simulink model contains the complete description of building PV power generation WITH A RESISTIVE LOAD scheme.

先进pid matlab 仿真 刘金琨 第版 第一章程序 pid matlab simulink liujinkunc hap01_12.rar

说明：  用matlab做的一个电气工程课程设计界面，其中包含接入系统设计，主变压器经济比较，牛拉法解潮流及阻抗法解短路故障(包含不对称故障)(A GUI created by matlab for design class of Electrical Engineering.I hope it can help everyone who need this kind of thing. )

This is matlab toolkit for testing fractional cointegration. Detailed description is included in the .zip file.

小波降噪、时频分析等方法，系统地研究航天电子设备多余物噪声检测过程中各操作变量和微粒物理参数对声波频谱的影响。通过单因素试验，详细分析了微粒粒径、振动力学条件中加速度和频率等3因素对声音信号频谱分布的影响规律，比较了短时傅里叶变换和小波变换的特点。该结果为进一步识别多余物微粒的参数提供了指导依据(the complexity of the material interaction and the properties of the particles themselves make the received signal difficult to analyse. This paper based on particle collision sound wave mechanism, using the methods of wavelet de-noising, time-frequency analysis and so on, this paper systematically studies the influence of various operating variables and particle physics parameters on the sound spectrum in the process of detecting the noise of aerospace electronic equipment. Through the single factor test, the influences of the three factors such as acceleration and frequency on the spectral distribution of the sound signal are analyse in detail, and the characteristics of the short-time Fourier transform and the wavelet transform are compared. The result provides a guideline for further identification of the parameters of the extraneous particles.)