초록

In a multiphase AC/DC converter system a single transformer is used having phase shifted tappings drawn from a polygonal succession of long and short windings wherein some of the windings carry only the difference between the outputted currents derived from the tappings.

대표청구항 ▼

A multiple AC/DC converter system comprising: a regular polygon connected transformer having at least six successive windings defining successive tappings therebetween which constitute secondary tappings of the transformer; alternate ones of said windings each having a mid-point tapping; a three-pha

A multiple AC/DC converter system comprising: a regular polygon connected transformer having at least six successive windings defining successive tappings therebetween which constitute secondary tappings of the transformer; alternate ones of said windings each having a mid-point tapping; a three-phase primary power supply being supplied to said midpoint tappings which constitute primary tappings of the transformer; said secondary tappings being respectively connected to six pairs of static-controlled rectifiers, each of said pairs being serially mounted across opposite polarity DC terminals; wherein said secondary tappings belong to two sets of three tappings symmetrically disposed about said primary tappings, one set being oriented clockwise, the other set being oriented counterclockwise relative thereto; whereby a voltage phase shift of predetermined magnitude relative to the voltage applied by the power supply is provided by three pairs of static-controlled rectifiers connected to said primary tappings, such phase shift being one polarity for one of said two sets of secondary tappings and opposite in polarity for the other of said two sets of secondary tappings.