Patent ID: 8611114
Filing Date: 2013-12-17
Classification: H02M

Abstract:
1. A method for controlling an inverter having at least two phase modules ( 100 ), with each phase module ( 100 ) having an upper valve branch (T 1 , T 3 , T 5 ) and a lower valve branch (T 2 , T 4 , T 6 ), and with each valve branch (T 1 . . . T 6 ) having at least three two-pole subsystems ( 10 ) connected in series, with the following method steps in the event Of failure of at least one subsystem ( 10 - 1 - 2 ) in a fault˜valve branch (T 2 ) of a defective phase module ( 101 ): a) identifying the faulty valve branch (T b) controlling a terminal voltage of the at least one failed subsystem ( c) controlling each of the upper and lower fault-free valve branches (T