Electricity: motive power systems – Induction motor systems – Primary circuit control
Reexamination Certificate
2005-07-26
2008-12-23
Ip, Paul (Department: 2837)
Electricity: motive power systems
Induction motor systems
Primary circuit control
C318S801000, C318S807000, C318S809000
Reexamination Certificate
active
07468595
ABSTRACT:
A motor drive for conditioning power to be delivered to a load includes a current feedback circuit that monitors current being fed to a transformer connected between the motor drive and the load. Based on the total current input to the transformer, a controller adjusts the V/Hz profile along which the motor drive operates. In this regard, the motor drive operates according to a V/Hz profile during start-up that prevents transformer saturation.
REFERENCES:
patent: 3584279 (1971-06-01), Krauthamer et al.
patent: 3819992 (1974-06-01), Opal et al.
patent: 4334267 (1982-06-01), Miko
patent: 4612610 (1986-09-01), Farnsworth et al.
patent: 4619023 (1986-10-01), Tsubokawa
patent: 4888461 (1989-12-01), Takano et al.
patent: 5003242 (1991-03-01), Liber
patent: 5142468 (1992-08-01), Nerem
patent: 5350992 (1994-09-01), Colter
patent: 5461296 (1995-10-01), Messersmith et al.
patent: 5703767 (1997-12-01), Stacey
patent: 5781422 (1998-07-01), Lavin et al.
patent: 5793623 (1998-08-01), Kawashima et al.
patent: 5959431 (1999-09-01), Xiang
patent: 6072302 (2000-06-01), Underwood et al.
patent: 6150776 (2000-11-01), Potter et al.
patent: 6307275 (2001-10-01), Cheng
patent: 6380719 (2002-04-01), Underwood et al.
patent: 6429612 (2002-08-01), Kume et al.
patent: 6429709 (2002-08-01), Hall et al.
patent: 6492789 (2002-12-01), Cheng
patent: 6501244 (2002-12-01), Cheng
patent: 6597221 (2003-07-01), Hall et al.
patent: 6636011 (2003-10-01), Sadasivam et al.
patent: 6768284 (2004-07-01), Lee et al.
patent: 6781802 (2004-08-01), Kato et al.
patent: 6801013 (2004-10-01), Woodward et al.
patent: 6807074 (2004-10-01), Ollila et al.
patent: 6917124 (2005-07-01), Shetler et al.
patent: 6952088 (2005-10-01), Woodward et al.
patent: 2001/0019253 (2001-09-01), Hammond et al.
patent: 2002/0047681 (2002-04-01), Cheng
patent: 2002/0047682 (2002-04-01), Cheng
patent: 2003/0048006 (2003-03-01), Shelter et al.
patent: 2003/0107348 (2003-06-01), Inagawa et al.
patent: 2004/0041404 (2004-03-01), McConnell
patent: 2004/0062062 (2004-04-01), Lee et al.
R. D. Lorenz et al., “Motion Control with Induction Motors,” IEEE Proceedings special issue on Power Electronics and Motion Control, vol. 82, No. 8, pp. 1215-1240, Aug. 1994.
J. Holtz, “Sensorless Control of Induction Motor Device,” IEEE Proceedings, vol. 90, No. 8, pp. 1359-1394, Aug. 2002.
S. Karve, “Three of a Kind,” IEE Review, pp. 27-31, Mar. 2000.
L. Gyugyi, “Unified Power-Flow Control Concept for Flexible AC Transmission Systems,” IEEE Proceedings-C, vol. 139, No. 4, pp. 323-331, Jul. 1992.
H. Akagi, “New Trends in Active Filters for Power Conditioning,” IEEE Trans. On Industry Applications, vol. 32, No. 6, pp. 1312-1322, Nov./Dec. 1996.
S. B. Bekiarov et al., “Uninterruptible Power Supplies: Classification, Operation, Dynamics, and Control, ” IEEE/APEC 2002, vol. 1, pp. 597-604, Mar. 2002.
S. Ponnaluri et al., “Overriding Individual Harmonic Current Control with Fast Dyanmics for UPS with Non-Linear Loads,” IEEE International Conference on Power Electronics and Drive Systems, vol. 2, pp. 527-532, Oct. 2001.
M. J. Ryan et al., “Control Topology Options for Single-Phase UPS Inverters,” IEEE Trans. On Industry Applications, vol. 33, No. 2, pp. 493-501, Mar./Apr. 1997.
M. J. Ryan et al., “A High Performance Sine Wave Inverter Controller with Capacitor Current Feedback and ‘Back-EMF’ Decoupling,” IEEE PESC Conference Proceedings, pp. 507-513, Atlanta, GA 1995.
Vacon NC Tools Manual, 2005.
Ahlgren Jyrki K.
Doring Thomas M.
Lee Kevin
Wallace Ian T.
Eaton Corporation
Ip Paul
Ziolkowski Patent Solutions Group, SC
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