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. 21, 2025
Filed:
Jun. 07, 2023
Sungrow Power Supply Co., Ltd., Hefei, CN;
Yuandong Qian, Hefei, CN;
Cheng Liang, Hefei, CN;
Jiawang Li, Hefei, CN;
Yongheng Qian, Hefei, CN;
Nianan Pan, Hefei, CN;
Zisi Tian, Hefei, CN;
Jin Zhang, Hefei, CN;
He Li, Hefei, CN;
Jingjing Wang, Hefei, CN;
Houzhi Tan, Hefei, CN;
Sungrow Power Supply Co., Ltd., Hefei, CN;
Abstract
An inverter and a method for detecting insulation impedance of the inverter are provided. During grid-connected operation of the inverter, the method includes: controlling a power supply to output two different test signals, and recording voltages of a power grid to ground corresponding to the two test signals; and calculating the insulation impedance to ground of the inverter during the grid-connected operation of the inverter according to the two test signals and the voltages of the power grid to ground corresponding to the two test signals. According to the present disclosure, the power supply outputs different test signals to disturb the voltage of the power grid to ground, so as to detect insulation impedance of the inverter during grid-connected operation of the inverter.