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。
However, the magnitude of the breaking phase voltage at transformer exit may have a relatively high raise, and may cause damage to electric appliance.
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。
Aiming at the phase error of the electronic voltage transformer (EVT) with capacitive divider, a phase compensation scheme was proposed.
针对基于电容分压原理的电子式电压互感器的相位误差,提出了相位补偿方案。
Transformer: It belongs to static EM, It can be used to change the Voltage, the Current, the phase No., the frequency and the phase of the Electrical power.
变压器:属于静止电机,可改变交流电能的电压,变压器:属于静止电机,可改变交流电能的电压,甚至也可改变相数、频率及相位。甚至也可改变相数、频率及相位。
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。
Firstly, this paper shows a method to detective the open circuit loss and the load loss of the there-phase power transformer online by operating the real-time voltage and current of the transformer.
首先,本文对三相电力变压器空载损耗、负载损耗在线检测理论进行了讨论和分析。
Use is made of that zero-sequence transformer outputs a voltage signal when phase-failure occurs in three-phase induction motor.
这种新方法的基础是零序变压器在三相异步电动机断相时输出一个电压信号。
In this paper a new voltage compensator in electric distribution system is discussed, the design employs a PWM AC-AC converter (4, IGBTs per-phase) along with an auto-transformer.
介绍在配电系统中一种新型的电压补偿器,即在自耦变压器中集成pwmAC - AC变换器(每相4个IGBT元件)。
The voltage difference of same-phase caused by different transformer wiring group was analysed. And the solving method was also provided in this paper.
分析变压器由于接线组别的不同引起的各个同相的电压差,以及解决方法。
Phase - shifted converter realizes zero - voltage - switching with the use of leakage inductor of the main transformer, however, the realization of ZVS for lagging bridge leg is difficult.
移相控制全桥变换器能够实现开关管的零电压开关,但滞后桥臂难度很大。
Phase shifted converter realizes zero voltage switching (ZVS) with the use of leakage inductance of the main transformer, however, the realization of ZVS for lagging bridge leg is difficult.
移相控制全桥变换器能够实现开关管的零电压开关,但滞后桥臂难度很大。
Putting the three-phase lines and middle line of the electrical circuit through the zero current transformer, the residual current signal will be converted into the voltage signal.
将电气线路的三相线及中线通过零式电流互感器后,零式电流互感器会把剩余电流信号转换为电压信号。
An electronics transformer rectifier unit(TRU)with the output of 28.5V/100A DC is developed by using a novel phase shifted zero voltage and zero current switching PWM converter topology.
采用一种新型移相控制零电压零电流开关PWM全桥变换器拓扑,研制成2 8.5V/10 0A的航空电子变压整流器。
It is found that output voltage of zero-sequence transformer is proportional to voltage UA 'a between phase-failure points.
经研究发现,零序变压器输出电压与断相点间电压u _ (A' A)成正比。
The modified types will not be equipped with commutation transformer and the three-phase alternating current power supply directly acquires DC voltage through bridge type rectifier.
改进型不配整流变压器,将三相交流电源直接由桥式整流获得直流电压。
The primary side of the three-phase secondary line winding transformer is directly connected with the voltage output end of the three phase network;
所述三相多副边绕组变压器的原边直接或通过高压开关与三相电网的电压输出端相连;
The primary side of the three-phase secondary line winding transformer is directly connected with the voltage output end of the three phase network;
所述三相多副边绕组变压器的原边直接或通过高压开关与三相电网的电压输出端相连;
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