变换器

Three-level NPC inverter has been put into practical use for years especially in high voltage high power grid.

在高压大容量系统中，二极管钳位型三电平变换器得到了广泛的应用。

A discussion is given on the possibility of the negative resistance component and its physical properties, set forth the relationship between the negative resistance component and negative impedance converter and applicatio

从变量约束关系出发分析了负阻元件存在的可能性及其物理性质，阐述了负阻元件与负阻抗变换器的关系及其应用。

The belt of parallel coupling microstrip that because orgnaization of these two kinds of coupling applies at having respectively,centers transformer of component K impedance connects filter, can make the structure of filter of this kind of microstrip more compact.

由于这两种耦合机构分别应用于具有集中元件K阻抗变换器的平行耦合微带带通滤波器，可以使这种微带滤波器的结构更紧凑。

With the development of power electronic and motion control technology, the double function starter/generator system which is made of induction machine and power electronic converter can be realized.

随着电力电子技术及电机控制技术的迅速发展，由电力电子变换器控制的异步电机实现起动/发电双功能已成为可能。

There are four translators in each package so a number of lines may be interfaced.

在每个封装壳中装有4个变换器，从而可以同许多线接口。

In the medium and high power SMPS, phase shifting controlled ZVS PWM full-bridge converter is favour topology. But in this converter, ZVS is difficult to be achieved for the lagging leg at light load.

在中大功率应用中，通常采用于移相控制ZVS PWM DC/DC全桥变换器，该电路在轻载时难以实现滞后桥臂的零电压开通。

Compared with the conditional PS-FB DC/DC converter, it nearly decreased half of the circumfluence energy, and realized ZVS of the lagging switches in a wider load scope with a dinky duty circle loss. It improved the efficiency of the converter effectively.

与传统电路相比，它将近降低了1/2的开关管的环流能量损耗，并且能够在较宽的负载范围内实现滞后管零电压开关和极小的占空比丢失，有效地提高变换器的效率。

So this paper models DC-DC converters as switched linear systems, introduces projection strategy conception of switched linear systems, and proposes control strategy of switching rule based on min-projection strategy.

为此，该文建立DC-DC变换器的切换线性系统模型，引入切换线性系统投影法的概念，提出最小投影法切换律的控制策略。

Even more gratifying is that we have applied a combination of digital and analog technology, successfully developed an international leading level, the frequency can reach near 2MHZ, good repeatability, temperature coefficient of only 5 millionths per unit and can be long-term stability of the voltage frequency converter, which will enable new power meter can be achieved without long-term adjustment.

更可喜的是，我们已应用数字和模拟相结合的技术，成功研制出具有国际领先水平、频率可达近2MHZ，重复性好，温度系数仅每度百万分之五和能长期稳定的电压频率变换器，这将使新的电能表可做到长期不需调整。

According to the characteristics of the basic cell, the design rules and optimized snubbers for IGCT-based inverters are presented.

根据该单元的性质，描述了多电平变换器吸收电路设计的一般规则，对吸收电路的关键参数进行了优化设计。

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