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:
Dec. 02, 2025
Filed:
Aug. 24, 2023
Yantai Jereh Petroleum Equipment & Technologies Co., Ltd., Shandong, CN;
Shouzhe Li, Shandong, CN;
Jifeng Zhong, Shandong, CN;
Liang Lv, Shandong, CN;
Xincheng Li, Shandong, CN;
Abstract
The techniques disclosed herein reduce the withstand-voltage requirement on single power cell of a VFD (variable-frequency drive) system, and prevent the VFD system from stopping due to the damage of individual power cell in the VFD system. The VFD system includes: a motor; and a plurality of power cells connected in series for supplying electric power from a power supply facility to the motor after the electric power is subjected to voltage regulation and/or frequency conversion, so as to drive the motor to operate and generate a driving force.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile