Electricity: motive power systems – Induction motor systems – Primary circuit control
Reexamination Certificate
2007-03-06
2007-03-06
Duda, Rina (Department: 2837)
Electricity: motive power systems
Induction motor systems
Primary circuit control
C318S727000, C318S798000, C318S799000, C318S801000, C318S803000, C318S806000, C318S808000, C318S804000, C318S254100
Reexamination Certificate
active
10846315
ABSTRACT:
An electronic drive for vector control of an induction motor controls slip and operating frequency in response to changes in stator voltage. The drive includes a torque control loop, a flux control loop and a frequency control loop. The control is based on a commanded stator current that is resolved into a torque-producing, or q-axis, current component and a flux-producing, or d-axis, current component that are in quadrature. The frequency control loop includes slip control in which a slip frequency command is produces based on a value for the leakage inductance of the motor. The leakage inductance value dynamically varies as a function of the q-axis current reference command.
REFERENCES:
patent: 3911340 (1975-10-01), Plunkett
patent: 4237531 (1980-12-01), Cutler et al.
patent: 4450398 (1984-05-01), Bose
patent: 4724373 (1988-02-01), Lipo
patent: 4967134 (1990-10-01), Losic et al.
patent: 5032771 (1991-07-01), Kerkman et al.
patent: 5140248 (1992-08-01), Rowan et al.
patent: 5334923 (1994-08-01), Lorenz et al.
patent: 5365158 (1994-11-01), Tanaka et al.
patent: 5440219 (1995-08-01), Wilkerson
patent: 5532570 (1996-07-01), Tajima et al.
patent: 5594670 (1997-01-01), Yamamoto
patent: 5598081 (1997-01-01), Okamura et al.
patent: 5644206 (1997-07-01), Yura
patent: 5729113 (1998-03-01), Jansen et al.
patent: 5811956 (1998-09-01), Yamamoto
patent: 5828199 (1998-10-01), Tajima et al.
patent: 5859521 (1999-01-01), Tajima et al.
patent: 5861728 (1999-01-01), Tazawa et al.
patent: 5880572 (1999-03-01), Tajima et al.
patent: 5923144 (1999-07-01), Seibel et al.
patent: 6014006 (2000-01-01), Stuntz et al.
patent: 6147470 (2000-11-01), Ohashi et al.
patent: 6166514 (2000-12-01), Ando et al.
patent: 6316904 (2001-11-01), Semenov et al.
patent: 6377018 (2002-04-01), Tajima et al.
patent: 6636012 (2003-10-01), Royak et al.
patent: 6784634 (2004-08-01), Sweo
patent: 6809492 (2004-10-01), Harakawa et al.
patent: 6864660 (2005-03-01), Veltman
patent: 2002/0141212 (2002-10-01), Ishida et al.
patent: 2002/0149341 (2002-10-01), Tao
patent: 2003/0062870 (2003-04-01), Royak et al.
patent: 2004/0263111 (2004-12-01), Royak et al.
Matsuo Takayoshi
Thunes Jerry
Duda Rina
Hiruy Elias
Quarles & Brady LLP
Rockwell Automation Technologies Inc.
Walbrun William R.
LandOfFree
Leakage inductance saturation compensation for a slip... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Leakage inductance saturation compensation for a slip..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Leakage inductance saturation compensation for a slip... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3725329