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。
Three phase voltage PWM rectifier based on current variable-structure control is studied and mathematic mode of PWM rectifier is analyzed in this paper.
对三相电压型PWM整流器采用电流变结构控制进行了研究，分析了PWM整流器的数学模型，详细设计了电流变结构控制器，并对其稳定性进行了分析。
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。
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。
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。
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。
The principle and structure of the resonance-proof three phase voltage transformer used in the neutral insulation system are discussed. The connection errors brought about in operation are presented.
论述了中性点绝缘系统中采用的三相防谐振电压互感器的原理与结构，并指出了运行中容易发生的接线错误。
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。
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 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。
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。
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。
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。
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。
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。
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。
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。
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。
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。
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。
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%。
In this paper, the breaking transient formulas of terminal voltage and field current of synchronous machine with three phase symmetric load have been derived.
本文导出了同步电机三相对称负载突然拉开，电机端电压与励磁电流在瞬态过程中的解析表达式。
In order to make more effective control of universal power quality controllers (UPQC), an outer loop model for the voltage loop in a three-phase three-wire UPQC is proposed in the paper.
为了对通用电能质量控制器直流侧电压进行更为有效的控制，提出一种用于三相三线通用电能质量控制器(UPQC)直流侧电压控制的外环模型。
The shift trigger pulse of the thyristor trigger circuit with integration amplifier is generated by comparing directly principle of three-phase AC and shift-phase control voltage.
该晶闸管触发器采用集成运数放大器，移相触发脉冲的形成是根据三相交流电的各相与移相控制电压直接比较原理实现的。
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。
Based on practice, the reasons of large and medium-sized high voltage wound rotor three-phase asynchronous motor rotor failure were expounded, and viable approach was designed.
结合生产实践，系统阐述了大中型高压绕线转子三相异步电动机转子产生故障的原因，并提出了可行的处理方法。
As for the three-phase three-level voltage source converter, a simple SVPWM algorithm based on the sector mapping for controlling three-level converter is proposed.
针对电压型三相三电平变流器，提出了一种基于扇区映射、适用于三电平变流器控制、形式简洁的SVPWM算法。
Series Y3 asynchronous motors is a new series of general purpose low voltage three-phase cage motors designed with cold-rolled silicon steel sheet.
Y 3系列异步电动机是采用冷轧硅钢片作为导磁材料而设计的一般用途低压三相笼型异步电动机基本系列。
KIWA synthetic power saver with his unique structure form eliminates higher harmonic of the electrical network by way of the balance in adjusting three-phase current and voltage.
KIWA综合节电装置以其独特结构形式，通过调整三相电流和电压的平衡，消除电网高次谐波。
Through measuring three-phase current of low voltage at user side and handling by specific algorithm, TA ratio of HV measuring can be accurately judged whether is consistent with data plate.
通过测量用户低压侧三相电流相量，通过特定的算法处理，准确判定用户高计TA的实际变比是否与铭牌一致。
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