PROBLEM TO BE SOLVED: To miniaturize and reduce the cost of a parallel 24-pulse rectifier circuit by using an AC interphase reactor having a small phase shift angle for the purpose of low-voltage large capacitance requiring an insulation transformer for voltage step-down.;SOLUTION: The pulse rectifier circuit includes an AC interphase reactor 3A connected to secondary windings 21, 22 of a three-winding insulation transformer 2, reactors 3B, 3C on the output side thereof, and three-phase bridge rectifiers 1A-1D connected to the output sides of the reactors 3B, 3C and having a DC side connected in parallel. In the reactor 3A, a plurality of windings are magnetically coupled each other so that a magnetomotive force acting to the iron cores of the reactor 3A may be almost zero when the effective value of a current flowing to a first input/output terminal group is equal to that of a current flowing to a second input/output terminal group and a difference in current phase is substantially 30 degrees. In the reactors 3B, 3C, a plurality of windings are magnetically coupled each other so that a magnetomotive force acting to the iron cores of the reactors may be almost zero when the effective values of currents flowing from first and second output terminal groups are equal and the difference in current phase is almost 15 degrees.;COPYRIGHT: (C)2009,JPO&INPIT
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