无功的

Direct power control schemes have been widely used because of its simplicity, noise resistance, good dynamic performance, decoupled active and reactive power control.

PWM整流器的直接功率控制方法因具有简单实用、抗干扰能力强、良好的动态性能、可以实现有功无功的解耦控制的特性而被广泛应用。

Resources are allotted higgledy-piggledy, and duplication of effort is always rampant.

资源分配的高度混乱，以及反复无功的努力总是泛滥成灾。

With the increasing of power capacity and electric equipment,the requirement of reactive power grows day by day.

随着电网容量和用电设备的增加，用户对电力系统无功的要求也与日俱增。

The results given by the experiments prove that the design can meet the goal of decreasing the harmonic and reactive power effectively, and the design exhibits a unit power factor approximately.

实验证明采用APFC后，装置达到了功率因数接近1的优良效果，实现了减小谐波与无功的目标。

The lack of reactive power is the reason of the voltage unstability.

无功的缺额是电压失稳的本质原因。

To realize better performance of share current, a method is present to restrain the circumfluence.

采用有功和无功的并联控制理论，对各并联单元输出有功、无功功率进行分别控制。

Such grasping is futile from the start and condemned to frustration, for there is no basis or truth in it, and what we are grasping at is by its very nature ungraspable.

此种执著一开始就注定要失败无功的，因为其中并没有任何基础和真正存在，而我们所执著的东西其根本本质却是不可执取的。

And the realization of the system's active and reactive power is decoupled by orienting in the voltage of Power Grid.

在利用电网电压定向后，实现了系统有功和无功的解耦。

14 KV distribution system for oil-pumping units,reactor controlled reactive power compensation unit has been developed,which is based on the detailed analysis of the load performance,operation state,existing problem and influence factor of oil-pumping units.

为提高油田采油系统1.14kV供电系统的功率因数，在对油田抽油机负荷特点、运行状态以及抽油机电动机无功补偿存在的问题、影响因素等进行详细分析基础上，研制了一种用电抗器控制无功的无功功率动态补偿箱，并详细介绍了补偿箱的技术特点、使用方法和实际应用情况。

ABSTRACT:In order to raise the power factor of distribution system with 1140V for oil-pumping units based on the analyzing the load performance , operation state ,existing problem and influence factor of oil-pumping units ,a reactor controlled reactive power compensation equipment has been developed .And The technology character ,using method and applying example have been introduced in detail

为提高油田采油系统1140V供电系统的功率因数，在对油田抽油机负荷特点和运行状态，以及抽油机电动机无功补偿的存在问题，影响因素等进行详细分析基础上，研制了一种用电抗器控制无功的无功功率动态补偿箱，并详细介绍了补偿箱的技术特点，使用方法和实际应用情况。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐