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:
Mar. 12, 2024
Filed:
Sep. 18, 2023
Digital Grid Res. Inst., China Southern Pwr. Grid, Guangzhou, CN;
Peng Li, Guangzhou, CN;
Qiancheng Lv, Guangzhou, CN;
Bing Tian, Guangzhou, CN;
Xiaopeng Fan, Guangzhou, CN;
Zhong Liu, Guangzhou, CN;
Zhiming Wang, Guangzhou, CN;
Renze Chen, Guangzhou, CN;
Jie Wei, Guangzhou, CN;
Xu Yin, Guangzhou, CN;
Zejie Tan, Guangzhou, CN;
Zhenheng Xu, Guangzhou, CN;
Senjing Yao, Guangzhou, CN;
Licheng Li, Guangzhou, CN;
Yuehuan Lin, Guangzhou, CN;
Shengrong Liu, Guangzhou, CN;
Bofeng Luo, Guangzhou, CN;
Jiaming Zhang, Guangzhou, CN;
DIGITAL GRID RES. INST., CHINA SOUTHERN PWR. GRID, Guangzhou, CN;
Abstract
The present disclosure relates to an AC/DC closed-loop current sensor, including a magnetism gathering iron core, a TMR chip, a signal processing circuit, a signal generator, and a feedback coil. The TMR chip is arranged at an air gap of the magnetism gathering iron core and connected to the signal processing circuit. The signal processing circuit is connected to the signal generator. The feedback coil is wound around the magnetism gathering iron core and connected to the signal generator. The signal processing circuit is configured to select from the induced signal of the TMR chip and make an amplification to obtain a current signal component and send the current signal component to the signal generator. The signal generator is configured to adjust a current output to the feedback coil based on the current signal component, and output a measurement result of the selected current signal component.