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。

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。