定子三相电压是否相等？
本文设计了一种三相电压电流谐波监测系统。
In this paper, an intelligent instrument is introduced for measuring 3-phase voltage, current and Harmonic.
提出了一种新的三相电压型PWM整流器控制方案。
A new control scheme of three phase voltage source PWM rectifier is presented.
三相电压不对称对永磁同步电动机的性能影响较大。
Three-phase unbalanced voltages have great effects on the performance of a line-start permanent magnet synchronous motor.
配电系统三相电压的不对称会对用户造成一系列不利影响。
Voltage unbalance of three phase ac distribution systems adversely affects power customers.
提出了应用于三相电压型脉宽调制整流器的空间矢量简化算法。
A simplified algorithm three-phase voltage source PWM rectifier for space vector modulation was presented.
提出了一种基于三相电压型PWM逆变器的电压电流双闭环控制方法。
This paper puts forward a voltage and current double closed-loop controlling method based on three-phase voltage source PWM inverter.
指三相电压不平衡将会影响设备安全运行的一种电压不平衡率的保护。
Voltage imbalance protection: While a protection of voltage imbalance rate > 20%, the imbalance of three phase voltage will affect the safe running of the equipment.
计算高压配电线路得出的三相电压、三相电流有效值误差小于0.5%。
The errorless of three-phase voltage and current is less than 0.5 percent.
该信号源中采用硬件数字合成的办法产生三相电压与三相电流信号正弦波。
Using hardware digital synthesis method, the signal source generates three phase sinusoidal voltage and current signal.
三相电压型变换器（VSC）控制的关键在于控制其输入电感上的电流。
The math model of three-phase VSC is established in this paper, a current control scheme is applied base on the model.
该文对基于间接电流控制三相电压型整流器的数学模型和控制策略进行研究。
The paper presented a mathematic model and control strategy on a three-phase voltage type rectifier under indirect current control.
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.
误差分析表明，偏置电容法在三相电压不平衡度较小时可以满足测量精度的要求。
Error analysis result shows that biased capacitor method can meet the need of measurement accuracy while the unbalance of three phase voltages is relatively small.
参数检测和带载放电同时进行，单片机控制，可自动检测三相电压、电流、频率等参数。
Parameter test and load discharge can process at one time. It is controlled by CPU, and can automatically test three-phase voltage, current and power ETC.
随着“绿色电网”概念的提出，三相电压型PWM整流器逐渐成为人们关注的热点之一。
With the present of the "Green Grid" concept, three-phase voltage-source PWM rectifier becomes more popular.
提出了一种用于电网侧三相电压不平衡情况下的永磁直驱式风力发电机的逆变控制算法。
This paper presents a new converter control algorithm for the direct drive permanent magnet wind generator under the unbalanced three-phase source voltage.
本文主要从提高功率因数和能量回馈两个角度对三相电压型PWM整流器作了相应的研究。
This paper mainly focused on the research of three-phase PWM voltage source rectifier from the two angles of improving the power factor and feedback of energy.
阐述一种新型地铁地面供电电源——三相电压型PWM整流装置的数学模型及其控制方法。
It is explained the mathematical model and control method of a new type of ground power supply for metro vehicles, the 3-phase voltage type of PWM rectifier.
本文采用基于三维空间坐标的功率理论，即三相电压对应到三维空间坐标中的三维空间矢量。
In this paper, three-phase voltage will be corresponded to the three-dimensional space vector in the three-dimensional space coordinate.
结果显示，被采集的数据在主机上显示的波形能够充分还原三相电压和三相电流的实际波形。
It can be concluded from the result that the real waveform of the three-phase current and voltage can be reverted to the host by the data sampled by the sampler.
本文分析了三相电压型PWM整流电路的工作原理，给出了整流电路的相量图和一系列公式。
In this paper the principle of a 3-phase voltage-typed PWM rectifying circuit is analyzed and both the vector diagram of rectifying circuit and a series of formula are also offered.
该文以同步旋转坐标系模型为基础，设计了三相电压型PWM整流器的级联式非线性PI控制器。
This paper proposes a cascaded nonlinear PI controller for three-phase voltage source PWM rectifier, which is based on its model in synchronous reference frame.
提出建立一个发生对称三相电压的动画模型，对其进行规划设计，并在微型计算机上开发实施。
A plan for designing and setting up a model of moving graph for the symmetrical three phase voltage is proposed, and it is developed and used in the microcomputer.
本文采用非线性控制策略对由三相电压型PWM整流器组成变流器系统的控制方案进行了设计。
This paper applies nonlinear control theories to design the controller for the converter system consisted of PWM rectifier.
本文研究了三相电压源型逆变器实现并网所采用的控制方法，包括空间矢量调制法和锁相环技术。
A method of the three phase voltage-source inverter connecting to the grid is studied, which consists of space vector pulse width modulation and phase-locking method.
最终混合编程检测软件、数据采集卡、电压互感器电路共同完成对电网三相电压波动和闪变的检测。
Finally, combining programming measurement software together with data-requiring card and potential transformer circuit complete the measurement of three-phase voltage fluctuation and flicker.
最终混合编程检测软件、数据采集卡、电压互感器电路共同完成对电网三相电压波动和闪变的检测。
Finally, combining programming measurement software together with data-requiring card and potential transformer circuit complete the measurement of three-phase voltage fluctuation and flicker.
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