公开(公告)号：US10938321B2

公开(公告)日：2021-03-02

申请号：US16416789

申请日：2019-05-20

Applicant: ABB Schweiz AG

Inventor： Thomas Besselmann ,  Martin Bruha ,  Pieder Jörg ,  Stefan Almer

IPC: H02P6/00 ,  H02M7/525 ,  H02P25/024 ,  H02M5/451 ,  H02P27/06

Abstract: An electrical converter with at least two output phases includes a rectifier and a thyristor-based inverter interconnected by a DC link with an inductor, wherein the thyristor-based inverter includes a half-bridge with at least two half-bridge arms for each output phase of the electrical converter and each arm being provided by a thyristor. A method for switching the electrical converter includes: cyclically switching the thyristors of the inverter, such that at least one time instant, two thyristors of different half-bridge arms are switched on simultaneously, such that a pulse number, which determines at how many time instants thyristors of the inverter are switched during one stator voltage period, is lower than the number of half-bridge arms of the inverter.