DFIG-system-load-flow-calculation

本书详细介绍了MATLAB语言和仿真，可作为MATLAB爱好者的参考书(The book detailed the MATLAB language and simulation, MATLAB can be used as reference book lovers)

说明：  在Bialas與Karwan的第 解演算法 [13] 則是搜尋限制式解域中的端點，並且歸類為已搜尋端點集合、未搜尋端點集合、可行解端點集合、非可行解端點集合，再從可行解端點集合中找出使高階目標值最佳的端點。(Bialas and Karwan in the first solution algorithm [13] is the search for solutions in the domain of endpoint constraints, and the endpoints are classified as a collection of search, not search a collection of endpoints, the endpoint set of feasible solutions, non-feasible solution side point set, then the endpoint from the set of feasible solutions in order to identify the best target endpoint.)

Power flow studies, commonly known as load flow, form an important part of power system analysis. They are necessary for planning, economic scheduling and control of an existing system as well as planning its future expansion. The problem consists of determining the magnitudes and phase angle of voltages at each bus and active and reactive power flow in each line. In solving power flow problem, the system is assumed to be operating under balanced conditions and a single-phase model is used. Four quantities are assumed at each bus. These are voltage magnitude v, phase angle  , real power P, and reactive power Q.The Newton Raphson method of load flow analysis is an iterative method which approximates the set of non-linear simultaneous equations to a set of linear simultaneous equations using Taylor’s series expansion and the terms are limited to first order approximation.

本程序给出了自适应波束形成的GSC算法，并对其进行了MATLAB仿真。(This procedure gives the GSC adaptive beamforming algorithms and MATLAB simulation was carried out.)

this file is the identification of the fermentation process using an inventive method to define Q-matrix which uses Matlab commands to define the time consuming derivative operations which simplifies the simulation and also reduces the calculation burden of the users. this m.file is a complete simulation of a chemical fermentation process which is done in Matlab. this job includes an on-line estimationn of the states of a control system and also the identification of the parameters of process. this work can be considered an identification research project to a great extent.

NARMAX模型重构，用matlab实现了一个二次二次曲面的重构(NARMAX model reconstructed using Matlab achieved a second conicoid Reconstruction)

一束5W 的线偏振光以Φ = 45 度方位角振动，垂直入射到玻璃 - 空气表面，该光束波长0.6μm，玻璃介质折射率1.54 @0.6m，当入射角θ从0-70 度变化时，通过给定条件，分别完成如下要求： 画出该光束反射光的光强曲线（I-θ）； 分析该反射光束的偏振态变化，画出偏振方向变化曲线（φ-θ）和偏振光束相位变化曲线 （Φ-θ）。 （注：光束从光密到光疏的界面，在入射角θ 从0-70 度变化中，包括了临界角θc）(Bunch of linearly polarized light 5W to Φ = 45 degrees azimuth vibration, normal incidence to the glass- air surface, the beam wavelength 0.6μm, glass refractive index 1.54 @ 0.6m, when the incident angle θ changes from 0-70 degrees By the given conditions, namely the completion of the following requirements: Draw the reflected light beam intensity curve (I-θ) analysis of changes in the polarization state of the reflected beam, draw the polarization direction of the curve (φ-θ) and polarized beam phase curve (Φ-θ). (Note: the light beam from the optical density of the interface is sparse, the incident angle θ  variation from 0-70, including the critical angle θc))

利用matlab仿真GMSK的源程序 按照移动通信的原理编写的程序，很容易懂(simulation using Matlab GMSK according to the source mobile communications prepared by the principle procedures, it is easy to understand)

瑞萨单片机3-phase BLDC Motor by 120 hallsensor(3-phase BLDC Motor by 120 hallsensor)

模糊控制PID程序，可以做成模块实现系统控制部分的PID控制(Fuzzy PID control program, system control module can be made part of the PID control)