The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 29, 2013
Filed:
Mar. 13, 2007
Mike Dommaschk, Guteborn, DE;
Jörg Dorn, Buttenheim, DE;
Ingo Euler, Erlangen, DE;
Jörg Lang, Stadtsteinach, DE;
Quoc-buu Tu, Rosstal, DE;
Klaus Würflinger, Nürnberg, DE;
Mike Dommaschk, Guteborn, DE;
Jörg Dorn, Buttenheim, DE;
Ingo Euler, Erlangen, DE;
Jörg Lang, Stadtsteinach, DE;
Quoc-Buu Tu, Rosstal, DE;
Klaus Würflinger, Nürnberg, DE;
Siemens Aktiengesellschaft, Munich, DE;
Abstract
A device for converting an electric current has a phase module, which in turn has an alternating current connection and at least one direct current connection connected to an intermediate direct current circuit. The device further has an energy accumulator. A phase modulation path is formed between each direct current connection and each alternating current connection. Each phase modulation path has a series connection of submodules, which each have a power semiconductor. A semiconductor protective device is provided in parallel connection to power semiconductors of each submodule. A control unit actuates the semiconductor protective device, and energy accumulator(s) are equipped for supplying energy to the control unit. The device safely prevents damage from a short circuit on the direct-current side, even when the supply grid is connected, because a direct current connection of each phase module is connected to the intermediate direct current circuit via a direct-current switch.