Patent · US Active

Method for operating a multi-phase modular multi-level power converter

US9621072B2 · kind B2 · utility

2Cited by

10References

9Claims

0Family size

Assignee

Siemens Aktiengesellschaft · DE

Inventors

Steffen Bernet · Dresden, DE
Hans Bärnklau · Dresden, DE
Albrecht Gensior · Dresden, DE
Steffen Rohner · Sinsheim, DE

Key dates

Filing date	Jan 22, 2013
Grant date	Apr 11, 2017
Priority date	—
Expiry date	May 4, 2033

Classification

Technology area (CPC H)Electricity
CPC primaryH02M7/5387
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

A method for operating a multi-phase modular power inverter having DC input terminals and AC phase voltage output terminals connected to a load, phase modules connected between the DC input terminals, with each phase module composed of valve arms connected in series at a connection point forming an AC phase voltage output terminal which is connected to a load, each valve arm having a plurality of power inverter cells with turn-off semiconductor switches and a choke connected in series, includes controlling, with a control device, the turn-off semiconductor switches of each power inverter cell as a function of a plurality of setpoint values, wherein the setpoint values are generated such that a time-averaged energy value stored in a capacitor of a corresponding power inverter cells is predetermined by an operating point of the load and-or an operating mode of the modular multi-level power inverter.

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