瞬时值

采用瞬时值反馈及谐波注入的UPS逆变器分析

A UPS Inverter with Instantaneous Value Feedback and Harmonic Injection

基于瞬时值的SVC无功及负序补偿算法

The Reactive Power and Negative Sequence Compensation Algorithm of SVC Based on Instantaneous Value

基于瞬时值差动的母线保护由于受电流互感器（CT）饱和的影响而容易误动作。

Bus differential protection based on instantaneous values may make wrong decision because of CT saturation .

一种改进型电流瞬时值比较法PWM的原理初探和试验研究

A Preliminary Study of PWM Using Improved Current Transient Value Comparison Method

电源的全桥功率变换器采用基于电压瞬时值反馈的数字PID控制。

The full-bridge converter was controlled with the PID strategy based on the feedback of voltage output .

PWM控制瞬时值比较法的稳定性分析

Stability Analysis on PWM Control Instantaneous Comparison Method

采用电容电流瞬时值反馈的UPS控制方法研究

Research on Control Strategy of UPS based on Instantaneous Capacitor Current Feedback

本文介绍了基于矢量控制的改进型电流瞬时值比较法PWM原理，并给出了在电压型逆变器中实现该PWM控制的电压矢量限定以及电压矢量选择原则。

This paper presents the principle of the vector-control PWM using improved current transient value comparison method .

介绍了一种基于滤波电容电流内环的输出电压外环瞬时值反馈的UPS控制方案；

This paper presents the design of instantaneous capacitor-current feedback loop control strategy for UPS .

SPWM逆变器交流瞬时值反馈控制系统分析

Analysis of instantaneous feedback control system for SPWM inverter

瞬时值控制GTO斩波器的频率分析

Frequency Analysis of Transient Current Controlling for GTO Thyristor Chopper

着重讨论了采样值差动与瞬时值差动的区别，采样值差动的两个关键参数R和S在不同应用对象时的选择方法。

The differences between the sampling value differential protection and transient value differential protection , the methods for selecting the main parameter R and S in different applications are discussed .

在广泛查阅国内外文献资料后，结合调光器的技术要求，采用重复PI混合控制方法设计出一套基于电流瞬时值的机场助航灯调光器系统。

After referring to papers widely home and abroad , the air navigation dimmer system is designed based on instantaneous current repetitive-PI hybrid control .

与被测负载电流瞬时值成比例的信号ui加到比较器的同相输入端。

The signal u_i , which is in direct proportion to the controled load current instantaneous value , is delivered to the homo-phase input terminal of the comparator .

GPS时钟同步技术在电流纵差保护中的成功应用，为利用瞬时值进行动作判定提供了条件。

Since the GPS based clock synchronization technique has been successfully applied in line current differential protection , it 's possible to make tripping decision by using instantaneous value of fault component .

通过各种控制方法的对比和仿真研究，决定使用平均值PID反馈和瞬时值PID反馈相结合的控制方法。

Through comparison of a variety of control methods and simulation , decided to use the control method of the combination of average value PID feedback and Instantaneous value PID feedback .

同时还给出了改进型电流瞬时值比较法PWM的一种微机实现的结果。

The voltage vector limitation and selection principle for a voltage-type PWM converter and the experimental result of a microprocessor based PWM using improved current transient value comparison method are also given .

系统分析了物料衡算法的误差产生原因，对实测法中的瞬时值法和连续采样法进行了比较，得出结论：物料衡算法测算SO2有较大的误差；

Author analyzed systematically the reasons of making errors by material accountability method , and compared transient value way with continuous sampling way of actual measurement method .

极点配置的PD瞬时值反馈内环不仅极大改善了系统动态跟踪和抗干扰的能力，而且使得系统的鲁棒稳定性和稳态性能进一步得到提高。

The inner loop with a PD controller employing pole assignment technique not only improves the ability of the dynamic tracking and disturbance restraining , but also improves the robustness stability and static characteristics .

逆变控制采用SPWM方式，由数字PID调节器实现输出电压瞬时值反馈，并采用有效值调节实现稳压。

SPWM method is adopted to control the inverter model . Digital PID adjuster is used to realize voltage loop and the value modulation is used to maintain the value of output voltage .

瞬时值反馈控制利用快速检测，及时对逆变器的输出波形进行校正，主要包括瞬时值内环反馈控制、PID（单闭环）控制、双闭环控制、线性多变量状态反馈控制等。

Instantaneous control , including instantaneous inner - loop feedback control , PID control , dual - loop control , linear multiple state feedback control and so on , corrects the inverter output waveform in time by fast detection .

提出了两种新的抑制Es层杂波的自适应对消算法，分别是频域瞬时值LMS算法和归一化频域瞬时值LMS算法。

In this paper , two new adaptive algorithms are presented , which are Doppler-domain instantaneous valued LMS ( Least Mean Square ) algorithm and normalized Doppler-domain instantaneous valued LMS algorithm .

然后本文对UPS的现有的控制方法进行比较，最后选择直接电流控制作为Delta变换器的控制方法，选择瞬时值比较法加重复控制作为主变换器的控制方法。

Then this paper UPS existing control approach compared , what choose finally direct current control as a Delta converter control method , choose the instantaneous comparison with repetitive control as the main circuit and control method .

而归一化频域瞬时值LMS算法则是在频域瞬时值LMS算法的基础上增加归一化的过程，可以大大缩短自适应过程的收敛时间。

And the normalized Doppler-domain instantaneous valued LMS algorithm is adding a normalized procedure on the Doppler-domain instantaneous valued LMS algorithm , which can lessen the convergent time of the adaptive procedure obviously .

在数据计算分析上，利用频率跟踪技术对FFT算法实施改进，能准确地计算录波数据的瞬时值、有效值、相位角、频率以及P、Q、S、功率因数等。

The FFT algorithm has been further improved by tracing various signal frequencies . There fore , it can calculate precisely the instant and RMS value , phase angle , frequency and P , Q , S powr factors of wave data .

笔者提出了一种基于瞬时值的SVC无功及负序补偿算法，将补偿网络分为正序和负序，分别用于校正功率因数和补偿三相不平衡。

A new algorithm is presented based on instantaneous valve in this paper . The positive sequence compensation network is used for power factor compensation and the negative one is for unbalance compensation .

本文引入了三角波调制、多重化与移相载波SPWM技术、滞环电流跟踪控制、瞬时值比较控制、单周控制五类控制策略，在性能方面各有优势。

This paper introduced five control strategys including triangle-wave modulation , carrier phase shifted SPWM tecnology , hysteresis current tracking control , instantaneous value comparison control and one-cycle control , which have their strong point .

通过理论推导得出，在传统控制方法的输出指令电压中增加了一个与电源电压瞬时值成正比的量，提高了变流器输出电压的准确性，使APF实际输出电流能够精确地跟踪指令电流的变化。

Compared with traditional method , a value proportional to source voltage is added to the reference voltage , which improves the accuracy of APF output voltage and makes the output current following the reference current precisely .

控制方案采用SPWM调制方式来控制双组合式单端反激变换器，同时采用负载电压瞬时值反馈方式控制高频斩波工作，使能量从负载侧反送回电源，从而实现功率的双向传输。

The control scheme is using SPWM modulation method to control the compound flyback bi-directional current source high-frequency link DC / AC converter and using the voltage instantaneous value feedback to control the converter which works in chop mode .

DC/AC逆变器采用基于电压电流瞬时值反馈的双闭环控制，将高压直流电逆变为正弦交流电。存在K&Suslin树+ZF+┐AC。

With the DC / DC converter , the low voltage output of the fuel cell is converted to a stabilized high DC and the high DC is inverted to sinusoidal AC voltage by the double loop controlled DC / AC inverter with the instantaneous voltage and current feedback control .