| US 7,554,824 B2 | ||
| Multilevel converter arrangement | ||
| Philippe Stefanutti, Choisy (France); Nicolas Hugo, Geneva (Switzerland); Luc Meysenc, Saint Egreve (France); Philippe Noisette, Sergy (France); and Alice Piazzesi, Baden (Italy) | ||
| Assigned to ABB Research Ltd, Zurich (Switzerland) | ||
| Filed on Feb. 04, 2008, as Appl. No. 12/25,393. | ||
| Application 12/025393 is a continuation of application No. PCT/CH2006/000398, filed on Jul. 31, 2006. | ||
| Claims priority of application No. 05405464 (EP), filed on Aug. 03, 2005. | ||
| Prior Publication US 2008/0175028 A1, Jul. 24, 2008 | ||
| Int. Cl. H02M 7/08 (2006.01) | ||
| U.S. Cl. 363—69 | 7 Claims |
| 1. A multilevel converter arrangement with N≧2 converter levels, each level comprising a primary converter connected to a
primary winding of a transformer unit of a transformer arrangement, and a secondary converter connected to a secondary winding
of the transformer unit, wherein the arrangement comprises:
a gate-drive for controlling a controllable power semiconductor device in a primary converter with electrical power supplied
to the gate-drive by a rectifier unit; and
a power-loop with a power-loop emitter and a power-loop receptor comprising the rectifier unit, wherein the emitter is inductively
coupled to the receptor via a current transformer and a power-loop conductor that is at least partially exterior to housings
of both the emitter and the receptor.
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