Preparation of Investigation on a New Algorithm for Instantaneous Reactive and Harmonic Currents detection Applied to Intensively Nonlinear Loads

To pursue an improved solution for instantaneous reactive power (IRP) and harmonics compensation with intensively nonlinear and quasi-stochastic loads, an effective algorithm is presented by comprehensive integration of i_p-i_q and p-q methods to detect instantaneous reactive power and harmonic currents. The algorithm can theoretically be applied in three phase circuits of any working conditions including three-phase four-wire circuits, asymmetric or harmonic voltage sources, etc. Both theoretical deduction and computer simulation demonstrate the accuracy and feasibility of the algorithm. Also, the above algorithm is expanded for further applications, which can effectively realize extraction and decomposition of the active or reactive components of either positive-sequence or negative-sequence currents with respect to any order harmonics.