ARW

The generating systems use Doubly-Fed Induction Generators (DFIGs) to achieve high conversion efficiency and to reduce the installation cost. This paper presents a modeling and Maximum Power Point Tracking (MPPT) control method of DFIG-based variable-speed wind energy conversion system. The generator considered is a wound rotor induction machine whose stator is connected directly to the grid and the rotor is fed through back-to-back Pulse-Width Modulation (PWM) converters. Stator flux-oriented vector control is applied to control the active and reactive current loops independently. The MPPT control method in a Wind Energy Conversion System (WECS) is proposed. The proposed control solution aims at driving the position of the operating point near to optimality. This is a very important aspect to maintain DFIGs efficiently in a variable wind speed. The wind generator is modeled in RSCAD program which is interfaced with the Real Time Digital Simulator (RTDS).

很实用的matlab编程，适合于初学人员同时也适用于高年级的学生及研究人员(Very practical matlab programming, suitable for beginners who also suitable for high-grade students and researchers)

群智能算法包括蚁群、粒子群算法等，以及人工免疫算法(Swarm intelligence algorithms include ant colony, particle swarm optimization, and artificial immune algorithm)

Heat transfer problem solved on L shaped solid body using MATLAB partial differential equation toolbox.

电力电子斩控式交流调压电路的matlab仿真主电路(Power Electronics Chopping AC voltage regulator circuit simulation matlab main circuit)

MVDR算法的频率谱估计 包含1个目标信号和2个干扰信号(Frequency Spectrum Estimation of MVDR Algorithm Contains one target signal and two interference signals)

A 10th order FIR system, excited by a sum of 5 sinusoids. Assume any numeric values for system coefficients and input signal parameters. The output of the system is corrupted by Gaussian observation noise with zero mean and variance 2 σ v (consider 2 σ v = 0.1 and 1). The estimator has access to the input and noise corrupted output of the system. However, the estimator has no knowledge about the system order, its coefficient values and observation noise variance.

：本文主要研究了应用多相滤波技术的信道化接收机建模问题。在给定信道频谱划分方案下，推导了基于多相 滤波器的信道化接收机数学模型。并由此模型设计了一个四信道模拟系统。最后用仿真实验结果验证了模型的正确性。(research a wave filter )

可以用于POD分析，得到不同模态以及重建流场(It can be used for POD analysis to obtain different modes and reconstruct flow field)

zooming pgm using matlab...without using in built functions....