Electricity: motive power systems – Induction motor systems – Primary circuit control
Reexamination Certificate
2005-12-02
2008-03-11
Masih, Karen (Department: 2837)
Electricity: motive power systems
Induction motor systems
Primary circuit control
C318S561000, C318S615000, C318S431000
Reexamination Certificate
active
07342379
ABSTRACT:
Systems and methods for controlling a rotating electromagnetic machine. The rotating machine, such as a permanent magnet motor or hybrid switched reluctance motor, includes a stator having a plurality of phase windings and a rotor that rotates relative to the stator. A drive is connected to the phase windings for energizing the windings. A controller outputs a control signal to the drive in response to an input demand such as a demanded speed or torque. Control methods (which can be implemented separately or in combination) include varying the gain of an estimator as a function of a demanded or estimated speed to position control system poles at desired locations, decoupling control system currents to achieve a constant torque with motor speed, compensating flux estimates of the estimator for saturation operation of the stator, estimating rotor position using averages of sample values of energization feedback, and calculating a trim adjusted speed error from a plurality of speed estimates.
REFERENCES:
patent: 4288726 (1981-09-01), Vazquez-Cuervo et al.
patent: 4633157 (1986-12-01), Streater
patent: 5006770 (1991-04-01), Sakamoto et al.
patent: 5006774 (1991-04-01), Rees
patent: 5173650 (1992-12-01), Hedlund
patent: 5220264 (1993-06-01), Yamada
patent: 5311435 (1994-05-01), Yocum et al.
patent: 5447414 (1995-09-01), Nordby et al.
patent: 5457375 (1995-10-01), Marcinkiewicz et al.
patent: 5495162 (1996-02-01), Rozman et al.
patent: 5498945 (1996-03-01), Prakash
patent: 5569994 (1996-10-01), Taylor et al.
patent: 5635810 (1997-06-01), Goel
patent: 5736823 (1998-04-01), Nordby et al.
patent: 5747971 (1998-05-01), Rozman et al.
patent: 5789893 (1998-08-01), Watkins
patent: 5801935 (1998-09-01), Sugden et al.
patent: 5854547 (1998-12-01), Nakazawa
patent: 5903128 (1999-05-01), Sakakibara et al.
patent: 5929590 (1999-07-01), Tang
patent: 5953491 (1999-09-01), Sears et al.
patent: 6005364 (1999-12-01), Acarnley
patent: 6081093 (2000-06-01), Oguro et al.
patent: 6137258 (2000-10-01), Jansen
patent: 6232692 (2001-05-01), Kliman
patent: 6278256 (2001-08-01), Aoyama
patent: 6297621 (2001-10-01), Hui et al.
patent: 6304052 (2001-10-01), O'Meara et al.
patent: 6326750 (2001-12-01), Marcinkiewicz
patent: 6362586 (2002-03-01), Naidu
patent: 6369536 (2002-04-01), Beifus et al.
patent: 6404154 (2002-06-01), Marcinkiewicz
patent: 6433506 (2002-08-01), Pavlov et al.
patent: 6441580 (2002-08-01), Marcinkiewicz
patent: 6443873 (2002-09-01), Suzuki
patent: 6462491 (2002-10-01), Iijima et al.
patent: 6515395 (2003-02-01), Jansen
patent: 6515442 (2003-02-01), Okubo et al.
patent: 6567282 (2003-05-01), Kikuchi et al.
patent: 6586904 (2003-07-01), McClelland et al.
patent: 6603226 (2003-08-01), Liang et al.
patent: 6628099 (2003-09-01), Iwaji et al.
patent: 6661194 (2003-12-01), Zaremba et al.
patent: 6690137 (2004-02-01), Iwaji et al.
patent: 6696812 (2004-02-01), Kaneko et al.
patent: 6731083 (2004-05-01), Marcinkiewicz
patent: 6750626 (2004-06-01), Leonardi et al.
patent: 6756753 (2004-06-01), Marcinkiewicz et al.
patent: 6756757 (2004-06-01), Marcinkiewicz et al.
patent: 6791293 (2004-09-01), Kaitani
patent: 6801012 (2004-10-01), Islam et al.
patent: 6828751 (2004-12-01), Sadasivam et al.
patent: 6831439 (2004-12-01), Won et al.
patent: 6874221 (2005-04-01), Jansen et al.
patent: 6879124 (2005-04-01), Jiang et al.
patent: 6883333 (2005-04-01), Shearer et al.
patent: 6894454 (2005-05-01), Patel et al.
patent: 7084591 (2006-08-01), Kobayashi et al.
patent: 7095131 (2006-08-01), Mikhail et al.
patent: 2003/0163226 (2003-08-01), Tan
“High Performance Sensorless Solutions For Induction Motor Control”, V. Bostan, M. Cuibus and C. Ilas; pp. 1-9; prior to Jun. 24, 2005.
“An AC Motor Closed Loop Performances With Different Rotor Flux Observers”, M. Alexandru, R. Bojoi, G. Ghelardi and S.M. Tenconi; pp. 1-7; prior to Jun. 24, 2005.
“Indirect Rotor-Position Estimation Techniques For Switched Reluctance Motors—A Review”; Iqbal Hussain; pp. 1-15; prior to Jun. 24, 2005.
“Lecture 9: State Observer And Output Feedback Controller”; pp. 1-14; May 16, 2005.
“Sensorless Motor Control Method For Compressor Applications”; Yashvant Jani; pp. 1-23; Mar. 29, 2005.
“Energy Conversion and Transport”; George G. Karady and Keith Holbert; Chapter 9, Introduction to Motor Control And Power Electronics; EE360; pp. 1-37; prior to Jun. 24, 2005.
“Minimum Error Entropy Luenberger Observer”; Jian-Wu Xu, Deniz Erdogmus and Jose C. Principe; pp. 1-13; prior to Jun. 24, 2005.
Henderson Michael I.
Marcinkiewicz Joseph G.
Shahi Prakash B.
Emerson Electric Co.
Masih Karen
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