Invention Grant
- Patent Title: Control apparatus for AC motor
- Patent Title (中): 交流电机控制装置
-
Application No.: US12277476Application Date: 2008-11-25
-
Publication No.: US08044618B2Publication Date: 2011-10-25
- Inventor: Junnosuke Nakatsugawa , Yoshitaka Iwaji , Kazuaki Tobari , Kiyoshi Sakamoto
- Applicant: Junnosuke Nakatsugawa , Yoshitaka Iwaji , Kazuaki Tobari , Kiyoshi Sakamoto
- Applicant Address: JP Tokyo
- Assignee: Hitachi, Ltd.
- Current Assignee: Hitachi, Ltd.
- Current Assignee Address: JP Tokyo
- Agency: Antonelli, Terry, Stout & Kraus, LLP.
- Priority: JP2007-309635 20071130
- Main IPC: H02P21/00
- IPC: H02P21/00
Abstract:
It is attained by being provided with a motor constant calculation unit for calculating electric constants of a motor, and by correcting setting values of electric constants defined on one of the axes of two orthogonal axes, by a functional expression using a state variable defined on the same axis, and by correcting them by a functional expression using a state variable defined on the other axis.
Public/Granted literature
- US20090140674A1 CONTROL APPARATUS FOR AC MOTOR Public/Granted day:2009-06-04
Information query
