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:
Jul. 14, 2015
Filed:
Jul. 27, 2012
Feng Yan, Shanghai, CN;
Cheng LU, Shanghai, CN;
DELTA ELECTRONICS (SHANGHAI) CO., LTD., Shanghai, CN;
Abstract
The present disclosure provides an inductance parameter measuring device of the permanent motor and the method thereof. The method includes: providing a d-axis given current signal and a q-axis given current signal; converting the d-axis given current signal and the q-axis given current signal to a three-phase command signal and outputting a motor control signal corresponding to the three-phase command signal, and obtaining a three-phase feedback signal, from which a d-axis feedback signal and a q-axis feedback signal is generated, based on the motor control signal; calculating a d-axis inductance and a q-axis inductance based on the first, second, third and fourth response signals when the permanent motor is in a stationary state, wherein the first, second, third and fourth response signals are respectively corresponded to the d-axis given current signal, the q-axis given current signal, the d-axis feedback signal and the q-axis feedback signal.