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. 14, 2023
Filed:
Dec. 27, 2021
Delta Electronics, Inc., Taoyuan, TW;
DELTA ELECTRONICS, INC., Taoyuan, TW;
Abstract
A motor control method includes the following steps: adjusting a voltage component of an estimated voltage command to a steady-state voltage value; performing a coordinate axis conversion on another voltage component of the estimated voltage command and the steady-state voltage value, and generating a three-phase excitation current to make a synchronous motor rotate to a rotating position and stop; calculating an estimated current signal; calculating an estimated value of the rotating position and adjusting the another voltage component of the estimated voltage command when determining that the current component is not maintained at a steady-state current value; calculating an effective inductance of the synchronous motor based on the steady-state voltage value, the another voltage component of the estimated voltage command, the steady-state current value, and another current component of the estimated current signal when determining that the current component is maintained at the steady-state current value.