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tiaoshiban
设计一个AC/DC/AC变频器设计,具体参数如下:三相交流输入380V/50Hz,三相输出交流电压500V/400Hz,THD<5 ,负载为一般的阻感负载,功率5000W。(Design of a AC/DC/AC converter design, the specific parameters are as follows: Three-phase AC input 380V/50Hz, three-phase output AC voltage 500V/400Hz, THD < 5 , as a general resistive load inductive load, power 5000W.)
- 2021-01-13 22:58:47下载
- 积分:1
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Random-scheduling-algorithm
感知网络中基于随机
逼近的机会调度设计
(Random scheduling algorithm)
- 2012-04-08 21:25:46下载
- 积分:1
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GUI
电力系统潮流计算软件,运行方式有两种:直接在matlab命令窗口敲入名字,或转为exe再运行。(Power flow calculation software, running in two ways: directly typing the name in the matlab command window, or into exe run again.)
- 2014-10-13 09:38:35下载
- 积分:1
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L01
隐枚举法求解01整数规划问题,约束线性,目标函数线性(01 implicit enumeration method for solving integer programming problems, constraints linear, linear objective function)
- 2014-10-23 13:53:20下载
- 积分:1
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WAN-M-FAI
混凝土纯弯构件M-φ曲线条带法分析,利用 matlab编程程序(Pure Bending M-φ curve strip method analysis, matlab program)
- 2020-12-11 08:59:18下载
- 积分:1
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Digital Signal Processing(MATLAB)
说明: 几十个用于数字信号处理的Matlab程序,超全(scores for digital signal processing procedures Matlab, ultra-wide! !)
- 2005-12-16 19:46:44下载
- 积分:1
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MATLAB
一、 牛顿-拉夫逊法概要
首先对一般的牛顿-拉夫逊法作一简单说明。已知一个变量X的函数
(4-6)
解此方程式时,由适当的近似值X(0)出发,根据 (4-7)
反复进行计算,当X(n)满足适当的收敛判定条件时就是(4-6)式的根。这样的方法就是所谓的牛顿-拉夫逊法。
式(4-7)就是取第n次近似解X(n)在曲线 上的点 处的切线与X轴的交点作下一次X(n+1)值的方法。参考图4-2(a)。在这一方法中为了能收敛于真解,初值X(0)的选取及函数f(X)必须满足适当的条件,如图4-2(b)所示的那种情况就不能收敛或收敛到别的根上去。
这一方法还可以做下面的解释,设第n次迭代得到的解与真值之差,即 的误差为 时,则
(4-8)
把 在 附近对 用泰勒级数展开
(4-9)
上式略去 以下的项
(4-10)
的误差可近似由上式计算出来
图4-2
(4-11)
比较式(4-7)和(4-11),可以看出牛顿-拉夫逊法的修正量和 的误差的一次项相等。
用同样的方法考虑,给出对n个变量 (:Because of the importance and complexity of power system, better algorithm and programme language
is very important . An interior point method based on the perturbed Karush2Kuhn2Tucker (KKT) condition is pre2
sented in this paper , where the method and process for the optimal power flow is treated through the Matlab’s
symbolic math toolbox and Mfunction is also presented. Using the symbolic code , it can improve the adaptability
of the programme dramatically. The advantage is that , what we need to do is change the model expression. We
can make use of the symbolic programme to check our programme while we write the Mfunctions. Using the Mat2
lab , we find the optimal solutions and calculate quickly and efficiently. It has proposed the powerful and unique
functions of Matlab in the optimization and calculation for power system.
Key words :power system symbolic calculation optimal power flow interior point method)
- 2020-07-08 16:38:56下载
- 积分:1
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2.4GH_antenna
无线WIFI 2.4GHz天线制作资料,DIY资料(WIFI 2.4GHz wireless data antenna production, DIY information)
- 2009-05-06 11:40:00下载
- 积分:1
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matlab7
一本关于matlab的好书,是一本教程,请欣赏学习。(one of the best books on Matlab is a guide, please appreciate learning.)
- 2007-03-03 20:21:52下载
- 积分:1
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ThreePhasePll
PLL(锁相环)的Matlab仿真模型,包含各模块的详细描述(The Matlab simulation model of PLL (Phase locked loop))
- 2013-12-16 14:04:51下载
- 积分:1