计算了交流相电压谐波含量；
介绍了单相电压型三电平四象限变流器工作原理。
The working principle of the single-phase voltage-source 4-quadrant converter is introduced.
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.
接地系数是故障时最大持续相电压与最大运行线电压之比。
The coefficient of grounding is the ratio of the maximum sustained line-to-ground voltage during faults to the maximum operating line-to-line voltage.
对直流系统开发了计及换相电压不对称的QSS换流器模型。
The QSS converter model in account of unsymmetric commutating voltages is developed for DC system.
单相电压型脉冲整流器是牵引传动系统的一个重要组成环节。
Single phase voltage pulse rectifier is an important part of the traction system.
从理论上分析了单相电压源pwm变流器输入电流的谐波特性。
The harmonic characteristic of input current in single-phase voltage source PWM converter is analyzed theoretically.
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.
通过对光伏并网系统的测试表明：并网电压与电网相电压同频同相。
Test results of simulation system show that grid-connected voltage is synchronization with grid phase voltage.
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.
提出了一种改进的基于直流回路母线电流的相电流、相电压重构方法。
Moreover, an improved method is proposed for the phase current reconfiguration on the basis of the direct current circuit.
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.
然而，在变压器出口处断线相电压会有较大幅度的升高，可能损坏家用电器。
However, the magnitude of the breaking phase voltage at transformer exit may have a relatively high raise, and may cause damage to electric appliance.
所比较的变量有电枢相电压和相电流、励磁电流、负载电流以及阻尼条电流。
The variables compared include the phase voltage and the phase current of the armature winding, the field current, the load current and the damper bar currents.
利用该特征建立了反应任一单相电压与模电流之间关系的集中参数等效模型。
The lump-constant equivalent model is built to represent the relation of any single phase voltage and mold current with this characteristic.
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.
该方法可以实现对单相电压凹陷幅值、起止时刻和相位跳变等特征量的动态检测。
It could dynamically detect voltage sag characteristics including sag amplitude, sag duration and phase jump.
在故障时刻，无论故障相电压的相位处在何种初始状态下，都有零序电流反向的特征。
At the time of failure, no matter what kind of start state of voltage phase, the zero-sequence transient current has the characteristic of inverse phase.
本系列发电机为三相带有中性点的星形接法，线电压为400v，相电压为230v。
This generator employs three phrase star connections with neutral point, the wire voltage is 400v and the phrase voltage is 230v.
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.
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.
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.
本文论述的是基于重复控制技术的单相电压型正弦逆变电源，重点是实现输出电压的高正弦度。
This paper studies a single phase voltage SPWM inverter based on repetitive control, whose key point is achieving a good sinusoidal output wave.
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.
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.
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