H - Electricity – 02 – M
Patent
H - Electricity
02
M
H02M 7/48 (2007.01)
Patent
CA 2623155
The invention relates to a method for controlling a power converter having at least two phase modules, which each have an upper and a lower valve branch, each having at least three series-connected two-pole subsystems, in the event of failure of at least one subsystem of a valve branch of a phase module. According to the invention, the valve branch (Tl, ~, T6) with the failed subsystem (10) is determined, and in each case a subsystem (10) of a valve branch (Tl, ~, T6), which corresponds to the faulty valve branch (Tl, ~, T6), of any fault-free phase module (100) is driven such that its terminal voltages (UX21) are in each case zero. A polyphase power converter with distributed energy stores (9) is therefore operated with redundancy.
L'invention concerne un procédé de commande d'un redresseur comportant au moins deux modules de phase présentant respectivement une branche de vanne supérieure et une branche de vanne inférieure présentant au moins trois sous-systèmes bipolaires montés en série, en cas de panne d'au moins un sous-système d'une branche de vanne d'un module de phase. Selon l'invention, la branche de vanne (T1, ..., T6) comportant le sous-système défectueux (10) est déterminée, et respectivement un sous-système (10) d'une branche de vanne (T1, ..., T6) correspondant à la branche de vanne défectueuse (T1, ..., T6) de chaque module de phase actif (100) est commandé de telle manière que sa tension aux bornes (UX21) est nulle. Ainsi, un redresseur multiphase est employé de façon redondante avec des accumulateurs d'énergie répartis (9).
Hiller Marc
Sommer Rainer
Aktiengesellschaft Siemens
Smart & Biggar
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