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APEC '98 Thirteenth Annual Applied Power Electronics Conference and Exposition
This paper presents a three-phase 12-pulse phasecontrolled rectifier with unity displacement factor, low line current harmonic content, two quadrant operation and absence of phase shifting transformer. The circuit is composed by two three-phase 6-pulse rectifiers parallel connected by four balancing reactors. One is a conventional thyristor rectifier with a lag firing angle (a). The other is an active rectifier composed by GTOs or IGBTs and diodes, operating with a lead (and symmetrical) firingdoi:10.1109/apec.1998.654016 fatcat:uiaqkc6pazcshd2xsadzok4vzy