Electricity: motive power systems – Induction motor systems – Primary circuit control
Reexamination Certificate
2005-02-01
2005-02-01
Masih, Karen (Department: 2837)
Electricity: motive power systems
Induction motor systems
Primary circuit control
C318S801000, C318S800000
Reexamination Certificate
active
06850033
ABSTRACT:
A device to regulate current produced by an induction machine responsive to a plurality of phase current signals. The motor produces torque for application on a shaft. A processing and drive circuit responsive to a direct current command signal and a quadrature current command signal produces phase current signals for input to the motor. A command circuit responsive to the phase current signals, an angular position of said shaft, and a voltage input command signal to produce a direct current error signal and a quadrature current error signal. A control circuit responsive to the direct and quadrature current error signals produces the direct voltage signal command and the quadrature signal command. The control circuit has a direct and quadrature proportional gain, integrator and clamp circuits. An algorithm produces limited or clamped voltage modulation index signals to obtain maximum efficiency and maximum torque per ampere in the speed range.
REFERENCES:
patent: 4707651 (1987-11-01), Schauder
patent: 6163128 (2000-12-01), Hiti et al.
patent: 6590361 (2003-07-01), Walters et al.
patent: 20020145837 (2002-10-01), Krefta et al.
patent: 20030052643 (2003-03-01), Sweo
Harnefors et al, “Torque-Maximizing Field-Weakening Control: Design, Analysis, and Parameter Selection,” IEEE Transactions on Industrial Electronics, vol. 48, No. 1, Feb. 2001.
Seibel et al, “Field Oriented Control of an Induction Machine with DC Link and Load Disturbance Rejection,” Rockwell Automation, Allen-Bradley Standard Drives Business, 6400 W. Enterprise Dr., Mequon, Wisconsin 53092.
Monti, “C167CS-Based Induction Motor Drive with Field Weakening Region,” (Applications), Dipartimento di Elettrotecnica, Politecnico di Milano, pp. 21-27.
Moore et al, “Effect on Vehicle Performance of Extending the Constant Power Region of Electric Drive Motors,” SAE Technica Paper Series 1999-01-1152, pp. 1-5.
Hodkinson, “Operating Characteristics of a 45KW Brushless DC Machine,” www.polaron-group.co.uk
elco/vehicles/paper5.html.
E-learning Resources in Microelectronics, “Control of Induction Motors,” www.bolton.ac.uk/technology/mind/paderborn/motors/induction/induction-motor.html.
Gallegos-Lopez Gabriel
Gunawan Fani S.
Walters James E.
Delphi Technologies Inc.
Funke Jimmy L.
Masih Karen
LandOfFree
System and method for clamp current regulation of induction... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with System and method for clamp current regulation of induction..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and System and method for clamp current regulation of induction... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3463574