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:
Nov. 28, 2017
Filed:
Sep. 04, 2015
Applicant:
Sma Solar Technology Ag, Niestetal, DE;
Inventors:
Daniel Premm, Kaufungen, DE;
Christian Schuetz, Grebenstein, DE;
Assignee:
SMA Solar Technology AG, Niestetal, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02J 3/42 (2006.01); H02J 3/38 (2006.01); H02M 7/44 (2006.01);
U.S. Cl.
CPC ...
H02J 3/383 (2013.01); H02J 3/386 (2013.01); H02J 3/42 (2013.01); H02M 7/44 (2013.01); Y02E 10/563 (2013.01);
Abstract
In a method for black start of a power station including a plurality of inventers connectable to a local AC electrical grid, a first AC voltage is built up in the AC electrical grid by a first inverter, said first AC voltage being reduced in comparison with a rated voltage of the AC electrical grid by at least a quarter, and at least one second inverter is connected to the AC electrical grid after synchronization with the first AC voltage. After connection of the second converter, a second AC voltage, which is higher than the first AC voltage, is built up in the AC electrical grid.