查询词典 balance in power

Through theoretic reckoning and simulating analyzing, several control strategies for shunt APF were compared and chose ip-iq arithmetic ofthe instantaneous reactive power theory control strategy as the right scheme to produce the instructing current. Based on it, some new control arithmetic was subjoined to suppress the resonance in system and balance the dc side capacitor voltage. Two topologies of main circuit were compared and chose the three-phase voltage-source converter with a split-capacitor as its main circuit structure. The numerical scales of the dc side capacitor and inductance of reactors were calculated. The high-pass filters were designed to eliminate effectively the highfrequency harmonics produced by APF.

通过理论计算和仿真分析，比较了并联型APF的几种控制策略的优点和缺点，从中选择瞬时无功理论控制策略i_p-i_q计算方式为指令电流产生的算法，并在此基础上增加了抑制系统谐振和平衡直流侧电容电压的控制；比较了并联型APF主电路的两种常见形式，从中选择了三相电压型变流器的主电路形式；算出适合该APF的直流侧电容和出线电感的参数；设计出能有效消除APF产生的高次谐波的高通滤波器。

Based on water balance model, the change of figure coefficients of infiltration water and surface water storage under border irrigation was analyzed. The power index of movement distance and time has little influence on the figure coefficient of infiltration water in the course of surface water movement, which can be substituted by a stable value.

该文依据水量平衡模型，分析畦灌下渗水形状系数、地表储水形状系数的变化规律，结果表明下渗水形状系数受地表水推进过程中的推进距离和时间的幂指数影响很小，可用一个稳定值代替，由此建立了基于水量平衡原理的畦灌水流推进简化解析模型。

Therefore, the article takes the study in-depth of three-phase unbalanced load compensation for the balance of theory, hold a proposed compensation algorithm based dq transformation, and designs a system to improve the power grid with the function of three-phase unbalance compensation.

所以，文章在深入研究三相不平衡负荷的平衡化补偿原理的基础上，提出了基于dq变换的补偿算法，并设计了具有改善电网三相不平衡功能的补偿系统。

There are relatively few hard accelerations from low revs, even taking into account the new chicane, and the main priority is for the power delivery to be progressive and driveable in order to maintain the best handling balance, and limit tyre wear.

即使有减速弯道的存在，引擎低转速下，要加速并不难，比赛的关键在于带出引擎的马力，以及驾驶的平衡性，还有让轮胎尽量少磨损。

The heat dissipation of different parts of the machine and the power of the electric heater are calculated in this paper. A feasible method to calculate the heat balance of the oil circulation system is provided.

计算了试验系统的各个散热环节的热功率以及电加热器的功率，对原油循环系统的热平衡计算提出了一种可行的方法。

In this paper,based on the theory of power flow and energy distribution be-tween non-conservat ively co upled os cillators under correlated excit at ions, the equations ofenergy balance for the oscillators are derived and statistical energy analysis theory for non-conservatively coupled systems under correlated excitations is developed.

目前相关激励下的统计能量关系实质是在比例相关或互谱密度为实数的相关激励下获得的，从分析普通相关激励下的功率流入手、给出相关激励下保守耦合系统及非保守耦合系统统计能量关系的普遍形式，实例表明：文中的分析和结论是正确的。

It is showed different "V" connection transformers,"Y" connection transformers and balance transformers, and some other transformers used in AT supply system. All of these transformers are analyzed from safe power supply, economic advantages, and technology required.

给出了基于&V&形变压器、&Y&形变压器和平衡变压器等多种同相AT牵引供电系统结构，并从供电可靠性、经济性和技术要求上，分析了各种同相AT牵引供电系统的优劣。

Simulation results of systems with V,v connection, three-phase-to-four-phase connection and single YN,dl 1-275 connection are showed in this paper. The proposed configurations of cophase AT power supply systems, balance compensation methods, comprehensive detecting reference currents are proved to be true and feasible.

针对本文给出的同相牵引供电系统，基于Matlab/Simulink建立了仿真模型，给出了V，y接线、三相变四相平衡接线和单台YN，d11-275接线的同相AT牵引供电系统仿真结果，仿真结果证实本文给出的同相AT供电系统结构

No difference was found in the vertical jump of the control and test groups, but then balance training was not theorised to have an impact on power performance.

在控制与实验组纵跳成绩未出现差异，但平衡训练没有在理论上证明有利于爆发力的提高。

Pressure governor valve is the use of a spring-loaded power and pressure balance theory, when the spring-loaded pressure less than atmospheric pressure and the valves closed when the pressure is greater than the spring-loaded rubber tubing stretch when the bottom of compressed air diaphragm, diaphragm the effort to promote diaphragm upward and left vavle seat blow the air flow of gas, this would piston shirking role in the pressure mobile, Selection will be emissions from valve seat, air compressors made by the then air into the gas valves and exhaust emissions is through the mouth into atmospheric air compressors idling.

调压阀的原理是利用了弹簧力与压力相平衡的原理，当弹簧的压力小于气压的时候阀关闭，当压力大于弹簧的弹力时候橡胶调压膜片下方的压缩空气对膜片的用途力，推动膜片向上拱曲离开阀座而使空气流入气腔，此时卸荷活塞在气压用途下移动，将排放阀门推离阀座，于是由空气压缩机充入气腔的空气便通过排放阀和排气口排入大气空气压缩机空转。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。