The Experimental Study on Error-frequency Characteristics of Capacitor Voltage Transformer 电容式电压互感器误差频率特性的试验研究
The capacitor voltage model is established and an operating strategy is proposed to control the capacitor voltage by absorbing and releasing the energy in converter. 建立了电容电压模型,提出了一种新型运行策略,对系统中的能量进行吸收和释放,实现对电容电压进行充放电控制。
Parameter Testing Methods Analysis of Capacitor Voltage Transformer 电容式电压互感器参数的测试方法分析
Testing Analysis of Capacitance and Dielectric Loss for the Capacitor Voltage Transformer 电容式电压互感器电容和介损试验的分析
But the unbalance of the floating capacitor voltage can be a problem, especially at low switching frequencies. 但其存在浮动电容器的电压失配问题,尤其在低开关频率时尤为显著。
Research on Capacitor Voltage Balancing for Multi-Level Inverter of Diode Clamped 二极管箝位型多电平逆变器电容电压平衡问题研究
While the PWM is implemented with high efficiency, the capacitor voltage is dynamically maintained. 在对电容电压进行动态维持的同时,实现高效的PWM调制。
Low Frequency Oscillation of Neutral Point Voltage of Neutral-point-clamped Three-level VSI Under SVPWM Control Research on Capacitor Voltage Balancing for Multi-Level Inverter of Diode Clamped 中点箝位型三电平逆变器在空间矢量调制时中点电位的低频振荡二极管箝位型多电平逆变器电容电压平衡问题研究
Unbalancing Capacitor Voltage for Diode Clamped Multi-Level Inverter 二极管钳位型多电平逆变器脉宽调制时电容电压均衡方法
For avoiding the unbalance of capacitor voltage, the summation of charge injected in neutral point must be zero. 电容电压不均衡是二极管钳位型多电平逆变器中一个关键技术问题。
The paper presents the inspection method of the non-voltage in secondary side output fault, the electrical test and the judgment of the capacitor voltage transformer. 对电容式电压互感器二次无电压输出故障的检查方法、电气试验及判断作了说明。
Study on the Transfer Overvoltage Test of Capacitor Voltage Transformer 电容式电压互感器传递过电压试验研究
Development and Application of 1000 kV Standard Capacitor Voltage Transformer for Field Test 现场试验用1000kV标准CVT的研制与应用
Mathematical model of capacitor voltage divider underthe high voltage insulation condition is derived; 推导出在高压绝缘条件下,建立电容分压器的数学模型;
The control strategy of the active power filter is also very important. Many studies on the control techniques are carried out, including the current control loop and the capacitor voltage control loop. 控制策略是有源电力滤波器的又一关键技术,本文对有源电力滤波器的控制系统进行了研究,包括电流控制和电容电压的控制。
Thus the closed-loop control of each flying capacitor voltage and the output voltage can be designed independently. 继而对飞跨电容电压进行解耦控制,采用这种控制方案有利于分别独立设计各个飞跨电容电压和输出电压的控制闭环。
A new hybrid asymmetric control technique for the new inverter is proposed. Analysis of output spectral and dc bus capacitor voltage unbalancing problem is carried out. 该文对这种逆变器进行了分析,提出了一种新型混合不对称调制方法,并对单相中每个模块的输出电压的频谱和不对称五电平模块的直流母线电容电压不平衡问题进行了分析。
This article gives some proposals about the technical development of capacitor voltage transformers based on the new requirements of the technical development in power systems for instrument transformers, the manufacturing technology progress of power capacitors and the operating experience of the equipment. 根据我国电力系统技术发展对电力互感器提出的新要求和电力电容器制造技术的进步,并结合设备的运行经验,对电容式电压互感器的技术发展提出了若干探讨性意见。
A novel active power filter control algorithm based on DC capacitor voltage control and compensation current feedback control is proposed. 提出了一种基于直流侧电容电压控制和补偿电流反馈控制的电力有源滤波器新型控制算法。
This paper analyzes the error test principle of capacitor voltage transformer ( CVT) by using the boosting voltage method of the parallel compensation inductance. 分析了利用并联补偿电感升压法进行电容式电压互感器(CVT)误差测试的原理,给出了测试线路,提出了测试过程中补偿电抗器补偿值的计算与选择方法。
So analysis the capacitor voltage fluctuation situation and the corresponding influence factors, then proposes a novel DC side capacitor voltage balancing control method based on voltage redundant states. 所以对电容电压的波动情况和影响电容电压平衡的因素进行了研究,并提出了一种新的基于电压冗余状态的直流侧电容电容平衡控制方法。
For the control of DC capacitor voltage of SVG, using PI controller maintain the DC capacitor voltage stability. 对于SVG直流侧电容电压的控制,采用PI控制器来控制,通过调节PI调节器的参数来维持直流侧电容电压的稳定。
Also, a novel staircase waveform modulation strategy is proposed to realize the dc capacitor voltage balancing control. 提出了一种在阶梯波调制方式下的电压控制策略,通过对方波脉冲进行改进再循环的方法,实现了电容电压的均衡,三电平和五电平的仿真结果验证了该方法的有效性。
It is analyzed and compared that the influence on the mutation load of the DC capacitor voltage. 讨论了负载突变对直流电容上电压的影响,用仿真结果对比分析加入负载电流前馈控制前后直流电容电压控制性能的差异。
For this purpose, some key technologies were researched, including harmonic current detection, the current tracking control, the inverter DC side capacitor voltage control and the selection of the main circuit parameters. 为此,本文对有源电力滤波器应用的一些关键技术包括谐波电流检测、电流跟踪控制、变流器直流侧电容电压控制、主电路参数选择等进行了研究。
During the experiment, the drive signal, voltage capacitor voltage, and output voltage waveform is measured. 在实验过程中,测量了驱动信号,均压电容的电压,以及输出的电压等波形。