Harmonic Aggregation Techniques: Methods to Compensate for Interaction Effects

The interaction effect in aggregation of harmonic currents is investigated. Several approaches including IEC 61000-3-6 recommended method are utilized and compared. A simple practical method is proposed to account for/compensate interaction effect. The proposed technique is computationally simple and does not require the knowledge of current harmonics in each branch. A rectifier is considered and simulated as an example to show the interaction effect and performance of the proposed method.