The errorless of three-phase voltage and current is less than 0.5 percent.
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%。
This paper analyzes the neutral point shift of the three-phase voltage regulator used in the experiments.
本文探讨了三相调压器在实验中出现的中性点位移的问题。
A simplified algorithm three-phase voltage source PWM rectifier for space vector modulation was presented.
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。
With the present of the "Green Grid" concept, three-phase voltage-source PWM rectifier becomes more popular.
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。
The paper presented a mathematic model and control strategy on a three-phase voltage type rectifier under indirect current control.
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。
This paper puts forward a voltage and current double closed-loop controlling method based on three-phase voltage source PWM inverter.
提出了一种基于三相电压型PWM逆变器的电压电流双闭环控制方法。
In this paper, three-phase voltage will be corresponded to the three-dimensional space vector in the three-dimensional space coordinate.
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。
The three-phase voltage source converter can absorb and Issue continuously adjustable reactive power, based on reactive power compensator.
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。
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.
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。
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。
Based on ADC subsystem integrated in C8051F005 chip, a new kind of data acquisition system of three-phase voltage was designed, which acted as the microcomputer.
利用C8051F005单片机作为微处理器并基于其内部集成的ADC子系统，设计一种新型三相电压数据采集系统。
The dynamic braking means that after three-phase voltage is switched off asynchronous dynamo the dc current flows into the stator circuit to realize dynamo braking.
能耗制动是在异步电动机切离三相电源后，在定子回路通入直流电流，实现能耗制动。
It covers five aspects: supply voltage tolerance, utility harmonic, three-phase voltage unbalance, power system frequency tolerance, voltage fluctuation and flicker.
它涵盖五个方面：供电电压允许偏差、公用电网谐波、三相电压不平衡度、电力系统频率允许偏差、电压允许波动和闪变。
Non-linearization model of three-phase voltage source rectifier is translated into the controlled linearity system(Brunovsky model) by the precise state linearity in the thesis.
通过采用状态反馈精确线性化方法，将三相电压型整流器非线性化模型转化为完全可控的线性系统布鲁洛夫斯基标准型。
Based on the circuit of three-phase voltage-type PWM rectifier, the mathematical model of three-phase voltage-type PWM rectifier is established. A voltage cycle control method is presented.
基于三相电压型PWM整流器主电路拓扑结构，建立了三相电压型PWM整流器的数学模型，提出一种基于电压环的控制方法。
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。
And some indexes of power quality: voltage deviation, real power, reactive power, harmonic content, voltage fluctuation and unbalanced three-phase voltage and current, are discussed at length.
同时本文对电能质量的有关指标：电压偏差、频率偏差、各种功率、谐波含量、电压波动和三相不平衡的计算和检测方法，进行了详尽地阐述。
A new control scheme of three phase voltage source PWM rectifier is presented.
提出了一种新的三相电压型PWM整流器控制方案。
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.
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。
Base on the feedback linearization theory for nonlinear systems, presenting a nonlinear model for three phase voltage source PWM and designing a nonlinear controller.
基于非线性系统反馈线性化理论，建立了三相电压型PWM整流器非线性模型，设计了一种非线性控制器。
Using hardware digital synthesis method, the signal source generates three phase sinusoidal voltage and current signal.
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。
This system can avoid the influence that three-phase imbalance load towards the output voltage of inverter.
该系统可以避免三相不平衡负载对逆变器输出电压的影响。
At present, our country power quality national standard was chiefly stipulated five quotas: frequency, harmonic and voltage deviation, three-phase unbalance and the voltage fluctuation and flicker.
目前我国电能质量国家标准主要规定了五个指标：频率、谐波、电压偏差、三相不平衡及电压波动与闪变。
Due to three-phase capacitance to ground, certain voltage exists between the neutral and the ground for a generator with ungrounded neutral.
对于中性点不直接接地的发电机，由于三相对地电容值存在差异，中性点与地之间存在一定电压。
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。
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.
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。
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.
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.
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。
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