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:
Jun. 12, 2018
Filed:
Sep. 21, 2015
Shibashis Bhowmik, Charlotte, NC (US);
Iman Mazhari, Charlotte, NC (US);
Babak Parkhideh, Charlotte, NC (US);
Shibashis Bhowmik, Charlotte, NC (US);
Iman Mazhari, Charlotte, NC (US);
Babak Parkhideh, Charlotte, NC (US);
SINEWATTS, INC., Charlotte, NC (US);
THE UNIVERSITY OF NORTH CAROLINA AT CHARLOTTE, Charlotte, NC (US);
Abstract
Various examples are directed to systems and methods for detecting an islanding condition at an inverter configured to couple a distributed generation system to an electrical grid network. A controller may determine a command frequency and a command frequency variation. The controller may determine that the command frequency variation indicates a potential islanding condition and send to the inverter an instruction to disconnect the distributed generation system from the electrical grid network. When the distributed generation system is disconnected from the electrical grid network, the controller may determine whether the grid network is valid.