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:
Aug. 25, 2026
Filed:
Oct. 12, 2023
Jiangsu Dongcheng Tools Technology Co., Ltd., Nantong, CN;
JIANGSU DONGCHENG TOOLS TECHNOLOGY CO., LTD., Nantong, CN;
Abstract
A compensation system and method for a zero-crossing voltage of back electromotive force of a brushless direct current motor (BLDCM) are provided. The compensation system includes: a direct current power supply; a three-phase inverter, connected to the direct current power supply and the BLDCM; a back electromotive force detection module configured to detect terminal voltages of three phases when the BLDCM is in operation; and a controller, connected to the three-phase inverter through the back electromotive force detection module. The compensation system further includes a current acquisition module connected between the direct current power supply and the controller, and the current acquisition module is configured to acquire a bus current value when the BLDCM is in operation; the controller includes a voltage compensation module connected to the back electromotive force detection module. A bus current threshold is preset in the voltage compensation module.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile