The paper presents a method to determine equivalent DC impedance and equivalent AC impedance of HVDC converter viewed respectively from DC side and AC side based on switching function theory.
文中提出了基于开关函数理论的HVDC换流器直流等值阻抗和交流等值阻抗计算方法。
A proper integral filter is designed to parallel with the Fourier system Thus the influence of DC offset on impedance calculation is cancelled.
傅里叶系统并联一个适当的积分滤波器以后可以消除非周期分量对阻抗计算的影响。
Because the clamp effect of DC voltage source, AC side output the rectangular wave voltage waveform, and it has nothing to do with the load impedance Angle.
由于直流电压源的钳位作用，交流侧输出电压波形为矩形波，并且与负载阻抗角无关。
Analog Input: Rated for 0-10 Volts DC, protected to 24 Volts DC maximum, input impedance 20k ohms;
模拟输入：DC额定电压为0-10，24伏直流保护，以最大限度，输入阻抗20千欧姆；
The results of the impedance measurement show that the surface area increases much slower in bipolar pulse current charge process than that in DC charge process.
交流阻抗谱结果显示在双向脉冲充电下，锂电极的表面积增长较直流充电时缓慢。
The QSS (Quasi Steady State) model of converter which neglects the negative impedance of DC system will bring some errors when unbalanced fault occurs in AC system.
当交流系统发生三相不对称故障时，忽略直流系统负序分量的准稳态模型将给交直流混合系统的仿真带来较大的误差。
The QSS (Quasi Steady State) model of converter which neglects the negative impedance of DC system will bring some errors when unbalanced fault occurs in AC system.
当交流系统发生三相不对称故障时，忽略直流系统负序分量的准稳态模型将给交直流混合系统的仿真带来较大的误差。
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