应用:电力整流电路、大功率变流器、电机控制、充电设备、变电站。
Applications: Power Rectifying Circuit, High Power Converters, Motor Control, BatteryChargers, Trackside Substations.
IGBT具有额定电压高、电流大,开关速度快,易于驱动等优点,是中-高功率变流器应用的最佳选择。
IGBT has a high rated voltage, current and switching speed, easy to drive, is one of the best choice of high-power converter applications.
直驱型风力发电系统需要全功率变流器,在现有器件功率水平以及开关频率等诸多因素制约下,变流器直接并联的方式具备结构简单、模块化设计、易扩展的优点。
The carrier phase shift technique based parallel back-to-back PWM converter is used on the direct-drive wind power system, with a switching frequency as low as 1 kHz.
提出了一种新的高功率因数变流器在矿井提升机中的应用。
The paper discusses a new high power factor converter applied in mine hoist.
基于双向变流器技术的蓄电池充放电装置具有充电和放电功能,同时实现了网侧电流正弦化及单位功率因数,因而减少了对电网的谐波和无功污染。
The device for battery charge or discharge based on the technology of bidirectional converter can be used in charging or discharging battery, and realize sine wave of ac and unity power factor.
通过对大功率集成门极换向晶闸管(IGCT)高压变流器的结构、控制系统、保护系统的研究,设计出一套7。
Through analyzing the topology, control system and protection system of large power high voltage converter equipped with integrated gate commutated thyristor (IGCT), a set of 7.
基于CPS -SPWM技术的级联型多电平变流器结合了二者的优势,在大功率电力电子装置中有良好的应用前景。
The cascade multilevel converter based on CPS-SPWM technique has both of the advantages, so it has attractive perspective in large power application.
多电平变流器具有输出谐波小、功率容量大、电磁兼容性好等特性而越来越引起人们的重视。
Multilevel inverters have been paid more and more attentions because of their good characteristics with low output harmonics, high power capacity, good electromagnetic compatibility and so on.
最后给出额定功率为1.5KVA的三相静止变流器的试验波形和实验数据,试验结果表明该系统具有良好的动静态性能。
Finally, the experiment waveforms and data about 1.5kva three-phase static inverter are described and the results indicate that the system has excellent dynamic and static state performance.
在基于对等效电流源电路模型分析的基础上,推导出了单相单位功率因数变流器输出电流二次谐波的计算公式,将输出二次谐波电流正、反向交替注入交流输入侧来抵消电流中的谐波。
Derived the formula for computing quadratic harmonics of output current in the single phase unit power factor ac DC converter based on analysis of the circuit module of the equivalent current source.
通过直接调节四象限变流器控制电压的幅值和相角,达到稳定输出电压和输入功率因数的目的。
Stable output voltage and input power factor is available by direct adjustment of the amplitude and phase angles of the control voltage for 4qs converter.
电流型四象限变流器是一种脉冲宽度调制的交直流变换装置,具有功率因数高、谐波电流小、再生方便等优点。
Currcnt-type four quadrant converter is an AC-DC converting device with pulse width modulation, whose advantages are high power factor, low harmonic current and convenient regeneration etc.
在所谓制动阶段,功率从开关型变流器的交流侧流向直流侧;此时变流器相当于一个整流器。
During the so-called braking of the motor, the power flows from the ac side to the dc side of the switch-mode converter and it operates in a rectifier mode.
提出了有效应用并联变流器作为大功率负载时的无功补偿器以及有源滤波器(APF)新拓扑。
A new topology for efficient utilization of parallel converters as VAR compensators and active power filters (APF) for high power loads is proposed.
风电变流器在国产化的过程中也必须要具有低电压穿越、不对称故障下运行的能力和动态无功、有功功率的调节能力。
The wind power converter must possess abilities of Low voltage Ride through (LVRT), available operation with unbalanced voltage fault and adjusting active as well as reactive power.
通过对高功率因数变流器网侧指令和实际电流的预测,提出了一种采用变流器电压矢量优化控制策略的电流跟踪新方案。
This paper discusses a new control tactics of the converter which adopt voltage vector optimum control tactics by predicting the current of high power factor converter.
由于中大功率的电力电子设备在电网中占很大的比重,因此高功率因数的三相可逆变流器的研究已成为当今国内外研究的一大热点。
Due to the prodigious proportion of medium and big electronic equipment in power line, the research of three phase reversible converter is becoming the researching hotpot on international and native.
基于三相电压型变流器的无功功率补偿装置可以吸收或发出连续可调无功功率。
The three-phase voltage source converter can absorb and Issue continuously adjustable reactive power, based on reactive power compensator.
针对多重化的背靠背四象限变流器,采用了载波移相控制与改进的SPWM调制相结合的方法,减小了电流谐波,提高了功率交换能力。
For multiple back-to-back four-quadrant converter, a modified SPWM technique is combined with carrier phase-shifting control, which reduces current harmonic and enhances power exchange ability.
本文结合风力发电机组中常用的交直交结构,将功率平衡概念引入并网变流器控制。
In this paper, the AC-DC-AC structure commonly used in wind turbine is introduced, and introduce the concept of power balance control.
SVG主电路结构是基于PWM变流器的拓扑结构,PWM交流器可以在四象限运行,所以SVG亦可在四象限运行,从而达到为系统提供无功功率的目的。
The main circuit configuration of SVG is based on topology configuration of PWM 4-quadrant converter, AC current of PWM converter can work in 4-quadrant, so do SVG.
讨论了大功率牵引用几个PWM变流器的并联运行。
This paper deals with the parallel operation of several Numbers of PWM converters for a high power traction application.
介绍了以电流波形补偿理论为根据,由GTR电流型四象限变流器构成的有源无功功率补偿器。
A new current-type active compensator is formed by GTR current-type four-quadrant converter, based on the theory of current-wave-form addittion.
为了使得并网变流器具有动态无功、有功功率的平滑调节能力,选用了有功电流、无功电流解耦的电流闭环控制结构。
In order to make grid inverter adjust active and reactive power smoothly, a closed-loop with decoupled active and reactive current is implemented.
该模型基于定子磁场定向的矢量控制方法,采用双pwm变流器,对大型并网风电机组的最大风能跟踪、有功和无功功率的解耦控制进行了仿真。
In the MATLAB, using a structured design method, a dual PWM converter control system model were established on the basis of the stator flux field vector control technology.
本文运用PW M电压型变流器的基本原理,设计了一种分离控制式交-直-交功率负荷模拟器。
A separate-controlled AC-DC-AC power load simulator is designed adopting the principle of voltage-type PWM convertor.
该变流器采用MCS - 8098单片机作为控制器,GTO作为功率开关器件。
MCS 8098 single chip microcomputer and GTOs are adopted as processor and power switching devices.
分析了低压静止变流器的几种技术方案,这些方案均难以做到大功率应用。
Several schemes for the static converter with low input voltage are analyzed. All these schemes are difficult to be used in heavy power application.
网侧变流器采用直流电压稳定并保证并单位功率因数并网,并将负荷侧吸收的有功功率馈送回电网。
The gird side converter is adopted DC voltage stable and unit power factor grid-connected control, and feedback the active power absorbed from the load side to the grid side.
网侧变流器采用直流电压稳定并保证并单位功率因数并网,并将负荷侧吸收的有功功率馈送回电网。
The gird side converter is adopted DC voltage stable and unit power factor grid-connected control, and feedback the active power absorbed from the load side to the grid side.
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