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:
Apr. 19, 2016
Filed:
Dec. 04, 2014
Sinfonia Technology Co., Ltd., Minato-ku, JP;
Ihi Aerospace Co., Ltd., Koto-ku, JP;
SINFONIA TECHNOLOGY CO., LTD., Minato-ku, JP;
IHI AEROSPACE CO., LTD., Koto-ku, JP;
Abstract
A 0-axis current calculatorconfigured to calculate a target value of the 0-axis current by setting the current of the open phase to be zero when one of the phases becomes open, or determines that the target value of the 0-axis current is zero when there is no open phase is provided. Based on the target values of the d-axis current and the q-axis current, the target value of the 0-axis current calculated by the 0-axis current calculatorand the d-axis current, the q-axis current, and the 0-axis current transformed by the d-q-0 transformerthe current supplied to each phase of the motor are controlled.