时域中非正弦周期电流的分解及其各分量的测量

以Ｓ．Ｆｒｙｚｅ非正弦条件下的功率定义为基础，结合其它功率定义思想，提出了时域中非正弦周期电流的分解方法，探讨了各电流分量的定义，物理意义及其作用，并与频域分解中各出的非正弦周期电流各分量作了对比。然后以此为基础，研究了电源电压为正弦波时其各分量和对应功率分量的测量方法，构造了相应的测量电路，最后的仿真研究证实了本文提出的测量方法的正确性和有效性。

Decomposition in Time Domain for Nonsinusoidal Period Current and Its Measurement of Each Component

On the basis of S.Fryze's power definition under nonsinusoidal condition and combining other ideas of power definition, a decomposition approach in time domain for the nonsinusoidal period current was proposed. The definition, physical meaning and action of each current component were discussed. They were compared with those decomposed in frequency domain. From this, the measurement approaches for each current component of the nonsinusoidal period current and their corresponding power component, in sinusoidal source voltage situations, were investigated. Then, the correspondent measurement circuit was built. The correctness and validity of the proposed measurement approach are clearly shown by the simulation studies.