直流功率

单片机控制的PWM直流功率放大器的设计

Design of PWM DC Power Amplifier Controlled by Microcomputer

SVC对特高压紧急直流功率支援的影响

Influence of SVC on UHV emergency DC power support

为了实现直流功率的双向传输，双向DC／DC变换器被应用在直流不停电电源系统、航天电源系统、电动汽车及移动发电系统等。

Bidirectional DC / DC converters will be widely used in applications such as DC uninterruptible power supplies , aerospace power systems , electric vehicles and advanced mobile generator sets .

RFMEMS开关具有尺寸小、插入损耗小、隔离度大、线性度好、较宽的工作频段、直流功率小等优点。

RF MEMS switches have many advantages such as small size , low insertion loss , high isolation , excellent linearity , wide frequency and low power consumption .

同时，针对本EPS电路的特点，还提出了系统散热设计、三维设计和直流功率母线的设计方法。

What 's more , in allusion to the characteristics of this EPS circuit , we also introduces the design methods of the thermal design , the 3D design and the DC bus design .

HVDC直流功率调制和TCSC电抗调节都能改变区域间传输的有功功率，从而影响系统的暂态稳定性。

Direct current power modulation of HVDC and the reactance modulation of TCSC can affect the active power transfered between areas and , further , affect the stability of the power system .

发射探针采用直流功率加热，并在较强电子发射条件下运行（I（e0）／I（e0）＞1）。

The emissive probe was heated by DC power supply and operated in strong emission ( I ( e0 ) / I ( c0 ) > 1 ) .

利用数字式恒定功率测试系统（DCPS）对多晶硅微电阻进行恒定直流功率负荷下电阻随时间变化特性的测量实验。

The characteristic of variation of resistance for Polysilicon microresistor with time was measured under constant power operation using Digital Constant Power System ( DCPS ) .

恒定直流功率负荷下多晶硅微电阻电阻一时间特性测量

Measurement for R-T Characteristic of Polysilicon Microresistor Under Constant Power Operation

基于正交小波神经网络的广域紧急直流功率支援在线预测

Wide-area EDCPS online prediction based on orthogonal wavelet neural network

开关式直流功率变换器的一种直接控制方法

A Direct Control Method for Switch-mode DC-to-DC Power Converters

此开关具有极低的直流功率耗散。

It has very low DC power dissipation .

基于时间最优的快速平息区间扰动的紧急直流功率控制策略

Emergency DC power control strategy for quickly suppressing inter-zone disturbance based on time-optimal control theory

降压式开关直流功率变换器的理论分析

On the theoretical analysis of the buck DC switching convert re high efficiency DC converter

因此直流功率可以作为临界面方程的一个有功功率变量。

So DC power can be considered as a active power variable of the critical hyper-plane function .

直流功率一定时，降低气压将导致类似的趋势。

And the same tendency was engendered by reducing gas pressure when the DC power remained at a constant .

揭示了逆变站电压支撑不足是限制直流功率紧急提升充分发挥作用的主要因素。

The study reveals that the voltage support in the inverter is the main limiting factor for the effectiveness of the HVDC emergent power modulation .

与传统交流系统不同，直流功率具有的快速可控的优点，将为电力的合理调度提供更快速有效的手段。

Different from traditional AC systems , DC power is faster and more controllable , and it can provide more efficient way for power dispatching .

功率放大器的主要功用是放大射频信号，以高效输出大功率为目的，射频信号的功率放大，其实质是在输出射频信号的控制下将电源直流功率转换成高频功率。

The amplification of RF signal , in the essence , is to convert direct current power into RF power under the control of RF signal output .

微波振荡器是雷达、通信、电子对抗等微波系统中最基本的组成部件，其作用是将直流功率转变成射频功率。

Millimeter-wave oscillator is the basic components of millimeter-wave systems such as radar , communication system , and electronics rivalry . It turns DC power into RF power .

直流功率调制器可以对交直流联络线进行局部控制或改善交直流混合系统的运行特性。

The current controller on the HVDC line can do AC / DC parallel tie-line local control or improve the stability of AC / DC hybrid power systems .

在直流功率一定时，工作气压的降低会导致刻蚀速率的增加，并且刻蚀由各向同性转变为各向异性。

When remains the DC power , the decreasing of gas pressure can lead to the increasing of etching rate and the transformation from isotropic etching to an isotropic etching .

直流功率调制能有效地提高交直流系统的稳定性，但同时直流换流站也要消耗大量的无功，影响交流系统的电压稳定。

HVDC power modulation can improve the stability of AC / DC systems , but the converter will consume much of reactive power , which influences the AC system voltage .

量热计为双负载型，一个负载作为量热体，另一个则作作为温度参考，用标准直流功率与射频功率比较的方法进行测量。

The calorimeter is of the twin-load type , one load is the calorimetric body while the other provides a reference of temperature . RF power is measured by comparing with standard DC power .

在工作气压一定时，增加直流功率会导致刻蚀速率升高，方向性刻蚀增强，刻蚀坑加深，而且在晶面坍塌缩小的同时，导致刻蚀深坑由晶面蔓延到晶界。

At a constant gas pressure the rise of DC power would result in the increase of deepening etch pits overspreading from the protuberant facets to the boundary of diamond crystallites with rising etching rate .

在开关电源中存储和传递直流功率，会在磁件铁心中产生较大的直流偏磁，限制了磁件铁心利用率和电源性能的提高。

There is a big DC-bias in the core of the magnetics storing and transfering DC power in switched power supply , which restricts the increase of the core 's utilization ratio and the improvement of the power supply 's performance .

根据所建立的刻蚀模型，探针诊断结果表明：直流功率和气压对刻蚀形貌和速率的影响机制在于不同放电条件下等离子体浓度和电子温度不同，从而得到不同的鞘电压和离子通量。

In accordance with an etching model , the measured results of Langmuir probe suggest that the influence mechanism was that different discharge parameters would lead different plasma densities and electron temperatures , so they would result in different ion fluxes and sheath voltages .

基于FPGA的分组式直流固态功率控制器的设计

FPGA-based Group DC Solid State Power Controller Design

直流替代功率测量准确度为±（0.1%+0.2μW）；

The measuring accuracy of the DC substitution power is ±( 0.1 % + 0.2 μ W ) .

对直流PWM功率放大器的电磁兼容性进行了分析，提出了抑制PWM功率放大器干扰的几种措施；

The EMC of DC PWM power amplifier is analyzed and several measures to restrain the disturbances of PWM power amplifier are put forward .