Analysis and mitigation of interactions between PFC converters and the AC source

Converter-source interaction is a common phenomenon in power electronic systems and can lead to deteriorated performance or even system instability. Experimental results are first presented in this paper to demonstrate that such interactions also exist in AC systems involving single-phase PFC converters and can lead to significantly increased harmonic distortion. Mathematical models and experimental measurement techniques are then presented for the prediction and analysis of such interactions. A mitigation method based on damping of the PFC converter input filter is also presented. Emphasis of the work is applications in future airborne power systems where undesirable converter-source interactions are likely to occur due to limited system capacities and the use of large number of PFC converters