Invention Grant
- Patent Title: Apparatus and method for controlling permanent magnet electric machines
-
Application No.: US09829106Application Date: 2001-04-09
-
Publication No.: US06504329B2Publication Date: 2003-01-07
- Inventor: Constantin C. Stancu , Silva Hiti , James M. Nagashima
- Applicant: Constantin C. Stancu , Silva Hiti , James M. Nagashima
- Main IPC: H02P706
- IPC: H02P706

Abstract:
A control scheme for an surface-mounted permanent-magnet synchronous (SMPMS) drive uses a combination of an open-loop magnetizing current reference calculation and a stabilizing feedback term, which speeds-up the torque transient response. The feedback term increases the stability margin during torque transients by increasing the available voltage margin for current control. The magnetizing current reference calculation takes into account the saturation effects in the SMPMS drive, which occur at peak torque points, and compensates for them. By taking into account saturation effects, stable operation at high speed is achieved, thereby increasing the speed range of the SMPMS drive.
Public/Granted literature
- US20020171387A1 Apparatus and method for controlling permanent magnet electric machines Public/Granted day:2002-11-21
Information query