查询词典 power function

As a single synchronous generator's electric power becomes higher and thescale of power system becomes bigger, synchronous generator and power system hasmore demand on expeditiousness, reliability and multi function of excitation system.

随着发电机单机容量和电网规模的增大，发电机组和电力系统对励磁系统的快速性、可靠性、多功能性等方面提出了更高要求。

The technology of electric information is developing very fast and make much more and more electric products teem,which develop in the direction of handy and miniaturization,such as mordern times communication equipmen、handy electric product、luggable computer、electric car、moonlet,and so on.it is used at large that the power supply make use of storage battery.hower most of storage battery can but use appropriative chargers,that need long time in the electrification and can't judge the electrification parameter and spare electrification time.thus it need a have much function and handy intelligent charger device that is a far-ranging application different kinds and types.the text integrate upwards request that will introduce a device and system of intelligent charger base on singlechip.in the power supply loop,the transformer take the voltage from 220v to 12v,then the rectifier circuit take the voltage turn to 14v,it is by way of the voltage of electrification power supply.

内容提要：电子信息技术的快速发展使得各种各样的电子产品不断涌现，并朝着便携和小型轻量化的趋势发展，现代通讯设备、便携式电子产品、笔记本电脑、电动汽车、小卫星等普遍使用蓄电池作为电源，应用非常广泛。然而大多数设备中的蓄电池，只能使用专用的充电器，而且普通的充电器大多充电时间长，无法判断其充电参数和剩余的充电时间，那么就需要一种广泛应用于不同种类和型号的可知道其充电参数和剩余充电时间的多功能便携式通用智能充电设备。本文结合以上要求介绍一种基于单片机的通用智能充电器的设计。

Joseph Nye coined the term "soft power" in 1990, and has published a new book, Soft Power, in 2004. However, he does not provide a clear concept of soft power, and he does not explain its function in international relations.

1990年约瑟夫·奈发明了"软权力"一词，并于2004年发表了一本新著《软权力：在世界政治中获得成功的途径》，然而他并没有给出一个清晰的软权力概念，也不曾解释软权力在国际关系中的功能。

A switching mode power supply with an active load detection function which supplies AC power input to a primary coil of a transforming element, then to a secondary coil of the transforming element, and then rectifies and outputs the AC power is provided.

要約 本发明提供了一种具有有源负载检测功能的切换模式电源，用于向变压元件的初级线圈、然后向所述变压元件的次级线圈提供交流功率输入，然后整流和输出所述交流功率。

The modified particle swarm optimization is utilized to solve the proposed reactive power optimization model; and combining with non–stationary multi-stage assignment penalty function, the reactive power optimization problem is transferred into a problem to solve extreme-value without constraints, thus the calculation accuracy and global convergence ability of MPSO are effectively improved, and power grid company can achieve maximal economic benefit by means of the proposed algorithm.

应用改进粒子群优化算法求解该无功优化模型，并结合动态调整罚函数法将无功优化问题转化成无约束求极值问题，从而有效地提高了改进粒子群优化算法的全局收敛能力和计算精度，使电网公司取得了最大经济效益。

After the balance and symmetry on operation function is realized with unsymmetrical structure, the transformer can be made not only for BT power supply, but also for AT power supply, which can meet the requirement of 2-phase power-supply system.

行功能上的平衡与对称，它既可制造成用于铁路电气化"BT"或直接供电方式供电的产品，又能制造成按"AT"供电方式的产品，可满足两相制供电的要求，能有效减小零序和负序电

Based on the conversion of trigonometric function ,a novel real-time algorithm of reactive power similar to that of active power is presented,which reactive power is speed-ily and accurately measured by the voltage,current and frequency.

运用三角函数变换的方法，提出了一种新颖的与计算有功功率相似的电网无功功率的离散化实时算法。

Summarize:Measuring function: three-phase voltage、wire voltage、current、frequency、active power、reactive power、power factor、bi-directional active energy、bi-direction reactive energy parameters etc. The additory functional module can conveniently extend DI/DO、harmonic analyzing etc; RS485 communication port, Modbus-RTU agreement ; Wide LCD screen convenient for viewing.

测量功能：三相电压、线电压、电流、频率、有功功率、无功功率、功率因数、双向有功电度、双向无功电度等，增选功能模块可方便扩充DI/DO，及谐波分析等功能；RS485通信接口，Modbus-RTU协议；大屏幕LCD显示。

This design is aims at the situation of Qianjiaying Mine existing protective device electivity leakage protection malfunction, development the high voltage intelligence switch has the protection function of leakage, overload, short circuit and monitor, thus reduces the breakdown power cut scope,and it is advantageous for the troubleshooting, reduces the power cut time, enhances the reliability of power supply.

本设计是针对钱家营矿现有的保护装置选择性漏电保护功能失效的情况，开发具有漏电、过载、短路和监视等保护功能的高压智能开关，用以减小故障停电范围，便于寻找故障，缩短停电时间，提高供电的可靠性。

Power amplifier has high request for signal nondistortion, waveshape precision, output power, and function stability. Therefore, Power amplifier is a technical difficulty in the design of relay protection testing device.

功率放大器在信号不失真、波形精度、输出功率、运行稳定性等方面都有较高要求，因此是继电保护测试仪设计中的一个技术难点。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。