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:
Oct. 03, 2023
Filed:
Apr. 26, 2021
Delta Electronics (Shanghai) Co., Ltd, Shanghai, CN;
Delta Electronics (Shanghai) CO., LTD, Shanghai, CN;
Abstract
The present disclosure provides an islanding detection method for an inverter and a corresponding apparatus. The islanding detection method includes: step A: obtaining a parameter of an output voltage of a three-phase AC system and a steady-state value corresponding to the parameter within a period of time; step A: obtaining a disturbance signal based on the parameter and the steady-state value; step A: superimposing the disturbance signal on at least one reference value of a droop control; and step A: detecting the parameter added with the disturbance signal, and determining that island occurs in response to the parameter greater than an upper limit or less than a lower limit.