对直流系统开发了计及换相电压不对称的QSS换流器模型。
The QSS converter model in account of unsymmetric commutating voltages is developed for DC system.
本程序应用多端口网络方程和故障端口边界方程联立求解的方法,计算电力系统各种多重故障及任意不对称运行的电压和电流。
In this program the voltage and current of simultaneous faults or unbalanced power system are calculated by solving the simultaneous equations of multi-port network and of the fault boundary.
内部控制评价对于改善信息不对称状况和促进内部控制系统的建立健全有着十分重要的意义。
Internal control evaluation has been the trend of economic development, and it is of great significance for the improvement of information asymmetry and perfection of internal control system.
建立了考虑转子转速的新的碰磨力模型,分析了具有初始弯曲和刚度不对称转子系统的碰磨响应,得到了系统参数对系统分叉和混沌响应的影响。
A new model of rub impact force considering varied rotating speed was derived and the rub impact response of a rotor system with initial bending and asymmetric stiffness was analyzed.
在语言系统的各个范畴中,广泛存在着对立但不对称的现象。
In the categories of language system, there exist many phenomena of unsymmetrical opposites.
并通过坐标变换简化了VSC的功率传输方程,还采用不对称触发策略设计了VSC的传输功率控制系统。
The power transmission equation of VSC is simplified by coordinate transformation, and the control system for transmitted power of VSC is designed by use of unsymmetrical triggering method.
论述了利用瞬时无功功率理论从三相不对称电流中正确检测出三相正序有功电流,并用计算出的指令电流对系统进行补偿的原理。
Based on the instantaneous reactive power theory the method correctly detects the active positive-ord current from unsymmetrical currents and applies calculated command current to compensate system.
较全面地介绍了非晶合金中常见的磁滞回线的平移及变形等不对称现象、微观机理,以及在脉冲变压器、防盗系统和商品识别等领域的应用。
Comprehensive review has been done on shifted and asymmetric hysteresis loops in amorphous alloys and their applications in pulse transformer, anti-theft system and goods-coding.
以基波潮流和谐波潮流的解耦性为基础,提出了一种将电力系统三相不对称基波潮流和谐波潮流分离迭代的计算方法。
Based on the decoupling of fundamental power flow and harmonic power flow, a separate iteration method for calculating three-phase asymmetrical harmonic power flow in power system is presented.
本文提出了带有不对称饱和非线性环节的线性离散系统的自适应控制算法,该算法简单易行。
This paper presents an adaptive control algorithm for discrete time linear systems with asymmetric saturation nonlinearity. This algorithm can easily be realized.
为了减少或消除信息不对称,可以合理应用网络沟通管理系统以及规范的沟通制度和沟通形式。
We can use the Online communication Management system and normative communication system and canonical communication form to decrease or avoid asymmetric information.
研究了利用相分量计算电力系统不对称故障的方法,说明了该方法的实用价值。
The calculation for asymmetrical failures in electric power systems using phase components is studied with its applicability discussed.
在谐振接地系统中,系统高压侧不对称故障及负荷的不对称会引起系统电源电势的不对称,从而改变中性点位移电压。
In resonant ground systems, both asymmetric fault of high-voltage side and asymmetry of load cause the asymmetry of system electrical source voltage. Then they change neutral displacement voltage.
由于设计采用了不对称半桥结构,提高了系统主功率电路的容错性。
The system adopts asymmetry half bridge structure, which makes the main power converter fault tolerant.
对不对称转子系统的非线性振动问题进行了研究。
The nonlinear oscillation of an unbalanced rotor system with unsymmetrical stiffness is studied.
针对化工过程某些非线性系统的不对称动态特性,提出了一种基于自校正模型的多模型预测控制算法。
To handle the unsymmetrical dynamic characteristics of some nonlinear systems in chemical process, a multi-model predictive control method was proposed based on self-tuning model.
在中性点不接地系统中,过电压也可能主要由某些类型的不对称故障所引起。
Overvoltages may also BE produced by certain types of asymmetrical fault mainly on systems with ungrounded neutrals.
另外,三相四线制有源电力滤波器能有效地抑制零线电流,并能有效地解决系统的不对称问题。
Moreover, three-phase four-wire active filters can suppress zero line current, and solve symmetric problem of system effectively.
为了更确切地描述实际系统中的混沌现象,提出了一种变形蔡氏电路,它含有一个不对称非线性阻性元件。
In order to describe the actual chaotic systems exactly, a simple modified Chua s circuit is presented, which includes an asymmetric nonlinear resistive element.
采用了一种常态下利用双不对称电桥实时监测直流系统绝缘的方法,解决了正负母线绝缘均按比例下降时失效的问题。
A new method is adopted to real-timely monitor DC system insulation, which applies double asymmetrical Bridges to keep it effective when positive and negative pole insulations drop in same proportion.
在3g移动通信系统中,主要业务是上下行速率严重不对称的多媒体数据业务。
In 3g mobile communication systems, main services are multimedia data services, of which the traffic is seriously asymmetric between uplink and downlink.
术前术后参照先天性肌性斜颈评分系统评定各项功能指标,包括颈部活动、头部倾斜和面部不对称。
Preoperative and postoperative functional indices we re evaluated with congenital torticollis scoring system, including neck movement , head tilt, facial asymmetry.
针对我国国有商业银行上下级银行之间信息不对称的特点,综合利用层次分析法和灰色系统理论,建立了对基层商业银行经营效果评价的综合体系。
Aiming at the information asymmetric character of the state-owned commercial Banks, grey system theory and AHP were combined to put forward a comprehensive evaluation system for the Banks.
使用相分量方法在分析电力系统三相不对称网络时更加方便。
Phase components method may offer advantages in the analysis of unbalanced three-phase networks.
本论文所论述的系统采用MSP430F149单片机通过不对称规则采样法来输出高精度的三相spwm波形,从而实现了逆变器的SPWM控制。
The system adopts MSP430F149 MCU and asymmetry regular-sampling strategy to output high precision SPWM wave, consequently transducer's SPWM control is realized.
现有两种主要的、相互竞争着的密码术,被称作秘钥(即对称)系统和明钥(即不对称)系统。
The two main competing cryptography schemes are known as the secret-key (symmetric) system and the public-key (asymmetric) system.
针对供应链经济系统的两大特性——自组织性和信息不对称性,作了深入研究,为供应链实践中的一些现象提供了理论解释。
The research on the self - organization & the information asymmetry of SCES is relatively deep-going, providing theoretical interpretation to some phenomena in the supply chain practice.
研究一类相似组合大系统,系统的互联项不对称且不满足匹配条件。
A class of similar composite systems is discussed, and the interconnections in such systems may be asymmetrical and mismatched.
研究一类相似组合大系统,系统的互联项不对称且不满足匹配条件。
A class of similar composite systems is discussed, and the interconnections in such systems may be asymmetrical and mismatched.
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