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. 16, 2021
Filed:
Jan. 06, 2020
Delta Electronics (Shanghai) Co., Ltd., Shanghai, CN;
Delta Electronics (Shanghai) Co., Ltd., Shanghai, CN;
Abstract
A method for identifying type of a grid automatically and an inverter device thereof are provided. The inverter device comprises a power line L, a power line L, a neutral line N and a ground line electrically connectable to a first power line, a second power line, a neutral line and a ground line of the grid, respectively. The method comprises: sampling at least two of voltages between Land L, between Lto N and between Lto N when the two neutral lines are connected, and identifying the type of the grid based on the sampling result; and sampling the voltage between Land Lwhen the two neutral lines are not connected, sampling at least one of a voltage between Land GND and between Land GND with cooperation of a grid-connected switching unit, and identifying the type of the grid based on the sampling results.