Patent · US Active

Multi-string inverter having input-side EMC filter

US9614427B2 · kind B2 · utility

2Cited by

1References

14Claims

0Family size

Assignee

SMA Solar Technology AG · DE

Inventors

Niels Berger · Kassel, DE
Tomasz Napierala · Berlin, DE
Stefan Buchhold · Vollmarshausen, DE
Julia Pinne · Vellmar, DE
Frank Rueckmann · Kassel, DE
Henrik Wolf · Kassel, DE

Key dates

Filing date	Apr 10, 2015
Grant date	Apr 4, 2017
Priority date	—
Expiry date	Jun 17, 2035

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02E10/56
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

An inverter includes a DC/AC converter, a DC intermediate circuit on the direct current input side of the DC/AC converter, multiple DC/DC converters connected in parallel to one another on the output side to the DC intermediate circuit, multiple inputs each coupled to one of the DC/DC converters, and an EMC filter connected between the inputs and the DC/DC converters. The EMC filter includes chokes in all current-carrying lines between the inputs and the DC/DC converters and filter capacitors between the inputs and the DC/DC converters leading from all the current-carrying lines to ground. The chokes in all current-carrying lines from the at least two inputs are formed by means of choke windings on a common core of a current-compensated choke.

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