Patent · US Active

Modular multi-stage inverter comprising surge arrester

US9647529B2 · kind B2 · utility

0Cited by

6References

4Claims

0Family size

Assignee

Siemens Aktiengesellschaft · DE

Inventors

Mike Dommaschk · Guteborn, DE
Guenter Ebner · Ditzingen, DE
Klaus Wuerflinger · Nuremberg, DE

Key dates

Filing date	Jan 24, 2013
Grant date	May 9, 2017
Priority date	—
Expiry date	Jan 24, 2033

Classification

Technology area (CPC H)Electricity
CPC primaryH02M7/217
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

Electric power is transferred between an AC voltage grid and a DC voltage grid in the high-voltage range. Phase modules have at least one common DC voltage connection and separate AC voltage connections. A phase module branch between the DC voltage connection and each AC voltage connection has a series circuit of two-pole sub-modules, each with an energy storage device and a power semiconductor circuit in parallel with the energy storage device. The power semiconductor circuit is driven to generate either the voltage drop across the energy storage device or else a zero voltage at the two sub-module connection terminals. A converter transformer has a primary side on an AC voltage grid and a secondary side connected to the AC voltage connections. Improved protection against overloading is provided by at least one surge arrester between the or one of the common DC voltage connections and the inverter neutral point.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.