Characterization of neutral and line current harmonics in three-phase computer power systems

In this paper, analysis of the phase and neutral current harmonics in a three-phase computer power system are carried out under distorted and/or unbalanced supply voltage conditions. Furthermore, the impact of background voltage harmonics on the resultant harmonic currents produced by a large concentration of personal computers is investigated. Results obtained from the proposed approach are compared to simulation results obtained using the PSPICE software package