Patent · US Active

Overvoltage protection for inverters that comprise an EMC filter at their input end

US8570692B2 · kind B2 · utility

0Cited by

9References

20Claims

0Family size

Assignee

SMA Solar Technology AG · DE

Inventors

Andreas Jeppe · Witzenhausen, DE
Henrik Wolf · Kassel, DE
Torben Westphal · Aurich, DE
Sven Bremicker · Baumbach, DE
Frank Greizer · Kaufungen, DE
Adrian Haering · Kassel, DE

Key dates

Filing date	Nov 28, 2011
Grant date	Oct 29, 2013
Priority date	—
Expiry date	Dec 28, 2031

Classification

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

Abstract

In an overvoltage protection apparatus before an inverter configured to feed electric energy from a DC voltage source into an AC power grid, the overvoltage protection apparatus includes a DC voltage input stage. The DC voltage input stage includes at least two current-carrying lines and an EMC filter including interference suppressing capacitors and interference suppressing inductors, and surge arrestors configured to divert overvoltages with respect to ground are connected to the current-carrying lines after the EMC filter, from a point of view of the DC voltage source.

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