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PARK方程 PARK equation英语短句 例句大全

时间:2024-07-12 01:35:01

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PARK方程 PARK equation英语短句 例句大全

PARK方程,PARK equation

1)PARK equationPARK方程

2)Park transformPark变换

1.A simple and convenient detection method of dynamic voltage disturbance based on thePark transform is introduced and extended to single-phase circuit system, which can effectively detect the compensation value of voltage disturbances such as sell, sag, asymmetry, flicker, fluctuation, harmonic and interruption etc.介绍了一种基于Park变换的简单便捷的动态电压扰动检测方法,并把它扩展到单相电路系统,该方法可以有效地检测出诸如电压骤升、暂降、不对称、闪变、波动、谐波以及瞬时中断等电压扰动的补偿值。

2.According to the two different kinds of voltage compensation,dynamic voltage restorer (DVR) and series active power factors (SAPF),the paper presents general and improved voltage detection methods based onPark transformation.针对动态电压恢复器(DVR)与串联有源电力滤波器(SAPF)2种不同的电压型补偿,提出分别采用基于Park变换的常规电压检测和基于Park变换的改进型电压检测算法,并都取得了良好的效果。

3.Then the Detection Method of Voltage distortion based on Park Transforms is chose,and the advantage and disadvantage of different PWM control methods is analyzed in this dissertation.采用了基于Park变换的电压畸变量检测方法。

英文短句/例句

1.Improved harmonic diction method based on park conversation基于Park变换的改进谐波分析算法

2.Park Vector and DRNN based Detection Method for Stator Winding Turn Fault基于Park变换和DRNN的定子绕组匝间故障诊断方法

3.turn left into Park Road.向左拐进公园路(Park Road)。

4.Nielsen transformations and its inverse transformations of Schottky groupsSchottky群的Nielsen变换与逆变换

5.Analysis on Interrelated Characteristics of Railway Logistics Park;铁路物流园区(Railway Logistics Park)相关特性的分析

6.Parameter Estimation of Synchronous Generator Based on Park Model基于Park模型的同步发电机参数辨识

7.pressure converter压力变换器压力转换器

mutator type analog-digital converter换向器型模-数变换器

9.A simplified method for computing Park & Ang damage model based on energy concept基于能量原理的Park & Ang损伤模型简化计算方法

10.contrast variation对比(度)变换(法)

11.Triality Transformation and Lie Group Spin_7;Triality变换和李群Spin_7

12.The Hilbert Transform Based on the FRFT基于FRFT的Hilbert变换

13.hydraulicefficiency transformer液压变速器液压变换器

14.Transition (tamper) length渐变段(变换段)长度

15.Functions of Complex Variables & Integral Transformatio复变函数与积分变换

mutator frequency changer换向器变频机整流子频率变换器

17.There are constant change of scenes, and the variety is interesting .布景不断变换,而这种变换是有趣的。

18.Such a group of formation is briefly referred to as a transformation group.这样一个变换的群,称为变换群。

相关短句/例句

Park transformPark变换

1.A simple and convenient detection method of dynamic voltage disturbance based on thePark transform is introduced and extended to single-phase circuit system, which can effectively detect the compensation value of voltage disturbances such as sell, sag, asymmetry, flicker, fluctuation, harmonic and interruption etc.介绍了一种基于Park变换的简单便捷的动态电压扰动检测方法,并把它扩展到单相电路系统,该方法可以有效地检测出诸如电压骤升、暂降、不对称、闪变、波动、谐波以及瞬时中断等电压扰动的补偿值。

2.According to the two different kinds of voltage compensation,dynamic voltage restorer (DVR) and series active power factors (SAPF),the paper presents general and improved voltage detection methods based onPark transformation.针对动态电压恢复器(DVR)与串联有源电力滤波器(SAPF)2种不同的电压型补偿,提出分别采用基于Park变换的常规电压检测和基于Park变换的改进型电压检测算法,并都取得了良好的效果。

3.Then the Detection Method of Voltage distortion based on Park Transforms is chose,and the advantage and disadvantage of different PWM control methods is analyzed in this dissertation.采用了基于Park变换的电压畸变量检测方法。

3)Park vectorPark矢量

1.Park vector-based method to diagnosis broken-bar fault of cage motor supplied by variable-frequency power;基于Park矢量的变频电源供电的笼型异步电机转子断条故障诊断方法

2.As the current and voltage have the same basic frequency,the unit voltagePark vector and its conjugate are used to rotate the currentPark vector.利用电压与电流基波频率相等,用单位电压Park矢量及其共轭对电流Park矢量进行旋转变换,从而将电流Park矢量的基波正序分量完全滤除而不影响其他的谐波分量。

4)Park transformationPark变换

1.The steady state analysis for space vector modulated matrix converter based on PARK transformation under non-ideal conditions;基于PARK变换的空间矢量调制矩阵变换器在非理想条件下的稳态分析

2.PARK transformation and instantanious reactive power;PARK变换与瞬时无功功率

3.This paper proposes the application ofPark transformation in Shunt Active Power Filters of three-phase four-wire systems.本文介绍了Park变换在三相四线制并联有源电力滤波器中的应用。

5)Park"s vector modulusPark矢量模

6)Park"s modelPark 模型

延伸阅读

泊松方程和拉普拉斯方程势函数的一种二阶偏微分方程。广泛应用于电学、磁学、力学、热学等多种热场的研究与计算。简史 1777年,J.L.拉格朗日研究万有引力作用下的物体运动时指出:在引力体系中,每一质点的质量mk除以它们到任意观察点P的距离rk,并且把这些商加在一起,其总和即P点的势函数,势函数对空间坐标的偏导数正比于在 P点的质点所受总引力的相应分力。1782年,P.S.M.拉普拉斯证明:引力场的势函数满足偏微分方程:,叫做势方程,后来通称拉普拉斯方程。18,S.-D.泊松撰文指出,如果观察点P在充满引力物质的区域内部,则拉普拉斯方程应修改为,叫做泊松方程,式中ρ为引力物质的密度。文中要求重视势函数 V在电学理论中的应用,并指出导体表面为等热面。静电场的泊松方程和拉普拉斯方程 若空间分区充满各向同性、线性、均匀的媒质,则从静电场强与电势梯度的关系E=-墷V和高斯定理微分式,即可导出静电场的泊松方程:,式中ρ为自由电荷密度,纯数 εr为各分区媒质的相对介电常数,真空介电常数εo=8.854×10-12法/米。在没有自由电荷的区域里,ρ=0,泊松方程就简化为拉普拉斯方程。在各分区的公共界面上,V满足边值关系 式中i,j指分界面两边的不同分区,σ 为界面上的自由电荷密度,n表示边界面上的内法线方向。边界条件和解的唯一性 为了在给定区域内确定满足泊松方程以及边值关系的解,还需给定求解区域边界上的物理情况,此情况叫做边界条件。有两类基本的边界条件:给定边界面上各点的电势,叫做狄利克雷边界条件;给定边界面上各点的自由电荷,叫做诺埃曼边界条件。边界几何形状较简单区域的静电场可求得解析解,许多情形下它们是无穷级数,稍复杂的须用计算机求数值解,或用图解法作等势面或力线的场图。除了静电场之外,在电学、磁学、力学、热学等领域还有许多服从拉普拉斯方程的势场。各类物理本质完全不同的势场如果具有相似的边界条件,则因拉普拉斯方程解的唯一性,任何一个势场的解,或该势场模型中实验测绘的等热面或流线图,经过对应物理量的换算之后,可以通用于其他的势场。静磁场的泊松方程和拉普拉斯方程 在SI制中,静磁场满足的方程为式中j为传导电流密度。第一式表明静磁场可引入磁矢势r)描述:在各向同性、线性、均匀的磁媒质中,传导电流密度j0的区域里,磁矢势满足的方程为 选用库仑规范,墷·r)=0,则得磁矢势r)满足泊松方程式中纯数μr 为媒质的相对磁导率, 真空磁导率μo=1.257×10-6亨/米。在传导电流密度j=0的区域里,上式简化为拉普拉斯方程静磁场的泊松方程和拉普拉斯方程是矢量方程,它的三个直角分量满足的方程与静电势满足的方程有相同的形式。对比静电势的解,可得矢势方程的解。参考书目郭硕鸿著:《电动力学》,人民教育出版社,北京,1979。J.D.杰克逊著,朱培豫译:《经典电动力学》下册,人民教育出版社,北京,1980。(J.D. Jackson,Classical Electrodynamics,John Wilye & Sons,New York,1976.)

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