Method of controlling speed of synchronous motor, and method...

Details Method of controlling speed of synchronous motor, and method... Method of controlling speed of synchronous motor, and method...

2006-07-11

2006-07-11

Knight, Anthony (Department: 2121)

Data processing: generic control systems or specific application

Specific application, apparatus or process

Electrical power generation or distribution system

C318S700000, C318S720000

Reexamination Certificate

active

07076340

ABSTRACT:
In sensorless vector control performed through use of a rotation speed of a synchronous motor 6 and the position of a rotor, a positive current is caused to flow to a γ axis on the assumption that a “d” axis serving as a true magnetic axis is out of phase with the γ axis by only an angle of load θe, whereby torque which is proportional to iγ sin θe and directed toward the γ axis arises in the magnetic axis. Accordingly, a deviation between a d-q axis serving as a true magnetic axis and a γ-δ axis serving as a control axis is eliminated. Even if load is exerted on the motor, the γ axis serving as a control axis is constantly aligned with the “d” axis serving as the magnetic axis of the synchronous motor, thereby enabling excellent vector control.

REFERENCES:
patent: 5569994 (1996-10-01), Taylor et al.
patent: 5585709 (1996-12-01), Jansen et al.
patent: 5834918 (1998-11-01), Taylor et al.
patent: 5886498 (1999-03-01), Sul et al.
patent: 5903128 (1999-05-01), Sakakibara et al.
patent: 5920161 (1999-07-01), Obara et al.
patent: 6051946 (2000-04-01), Yamada et al.
patent: 6081093 (2000-06-01), Oguro et al.
patent: 6107774 (2000-08-01), Yamada et al.
patent: 6163127 (2000-12-01), Patel et al.
patent: 6163128 (2000-12-01), Hiti et al.
patent: 6281656 (2001-08-01), Masaki et al.
patent: 6320349 (2001-11-01), Kaneko et al.
patent: 6344725 (2002-02-01), Kaitani et al.
patent: 6456030 (2002-09-01), Masaki et al.
patent: 6462491 (2002-10-01), Iijima et al.
patent: 6832127 (2004-12-01), Hao et al.
patent: 6850426 (2005-02-01), Kojori et al.
patent: 6975086 (2005-12-01), Honda et al.
patent: 60-183953 (1985-09-01), None
patent: 11299299 (1999-10-01), None
patent: 2000050677 (2000-02-01), None

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