Rectifier and transformer thereof

Details Rectifier and transformer thereof Rectifier and transformer thereof

H - Electricity

02

M

H02M 7/04 (2006.01) H02M 7/08 (2006.01)

Patent

CA 2350769

There are provided: a main three-phase full-wave rectifier (8) that converts three-phase AC (R phase, S phase, T phase) into DC; a transformer (9) that outputs AC of a total of six phases corresponding to the points that equally divide by three the arcs drawn in a transformer vector diagram in which an equilateral triangle is formed whereof the R phase, S phase and T phase are vertices, centered on each vertex and linking the remaining two points; and two auxiliary three-phase full-wave rectifiers (12) and (13) that convert into DC the six-phase AC that is output from the transformer (9), the output lines of the main three- phase full-wave rectifier (8) and two auxiliary three-phase full-wave rectifiers (12) and (13) being connected in parallel. The current flowing in the DC line through the transformer can therefore be reduced to 1/3 of the whole in the case of an 18-pulse rectifier, so enabling the capacity of the transformer to be reduced.

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