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. 04, 2025
Filed:
Feb. 26, 2024
Zhejiang University Advanced Electrical Equipment Innovation Center, Zhejiang, CN;
Zhejiang University, Zhejiang, CN;
Changliang Xia, Zhejiang, CN;
Mengting Ye, Zhejiang, CN;
Chen Li, Zhejiang, CN;
Zhanqing Zhou, Zhejiang, CN;
Yan Yan, Zhejiang, CN;
Tingna Shi, Zhejiang, CN;
ZHEJIAN UNIVERSITY ADVANCED ELECTRICAL EQUIPMENT INNOVATION CENTER, Zhejiang, CN;
ZHEJIANG UNIVERSITY, Zhejiang, CN;
Abstract
A method for quickly determining the rotor position of a permanent magnet motor using the N-division approach is provided. The method involves converting the motor's three-phase stator current coordinates into the dq two-phase synchronous rotation coordinate system and identifying the initial rotor position area. By establishing a stator current cost model and utilizing the d-axis stator current, the initial rotor position can be obtained. Subsequently, the N-division approach is employed for iterative optimization to obtain the estimated rotor position and the final position region, leading to a rapid estimation of the permanent magnet motor's rotor position. This method incorporates the finite set model predictive control concept into a phase-locked loop based on stator current, eliminating the need for additional rotor position polarity judgment and invalid rotor position control variables.