An electrical system with an arrangement for filtering rectifier-generated 5th and 7th order current harmonics

This invention relates to a multiple phase electrical system (310), comprising: a first and a second electrical lane (312,314) each lane having a generator (316a,316b) and a load (324) connected by a bus system (326a,326b), and a rectifier (320a,320b) between the generator and load; and, a transformer (318) connected between the two lanes, the transformer having a plurality of power windings (330a-c) across each of which corresponding phases of the first and second lanes are connected, and a plurality of phase shift windings (332a-c). The transformer provides a path for the circulation of the dominant 5th and 7th harmonic currents generated by each rectifier and prevents these undesirable currents from flowing in each of the generators.