Electricity: motive power systems – Constant motor current – load and/or torque control
Reexamination Certificate
2006-08-22
2006-08-22
Ip, Paul (Department: 2837)
Electricity: motive power systems
Constant motor current, load and/or torque control
C318S433000, C318S722000, C318S811000, C363S040000, C363S041000
Reexamination Certificate
active
07095197
ABSTRACT:
A method is described of regulating the instantaneous electromagnetic torque of a polyphase rotating electrical machine equipped with stator and/or rotor windings supplied by a voltage and a current generated by an inverter formed of switches whose switching is controllable. The method comprises a step of commanding the switching of the switches of the inverter using the fundamental frequency of the voltage generated by the inverter and a form of synchronous pulse width modulation configured as a function of an input set point, and a step of calculating the input set point from an instantaneous torque set point at each regulation time. The method further comprises a step of determining the time interval between two successive regulation times so that the time interval corresponds to an integer multiple of the period of oscillation of the instantaneous torque of the machine.
REFERENCES:
patent: 4023083 (1977-05-01), Plunkett
patent: 4047083 (1977-09-01), Plunkett
patent: 4490666 (1984-12-01), Tanamachi et al.
patent: 5619114 (1997-04-01), Blasko
patent: 5850132 (1998-12-01), Garces
patent: 6094364 (2000-07-01), Heikkila
patent: 6307759 (2001-10-01), Inarida et al.
patent: 6426602 (2002-07-01), McCann et al.
patent: 6541933 (2003-04-01), Leggate et al.
patent: 6674262 (2004-01-01), Kitajima et al.
patent: 6847186 (2005-01-01), Kerlin
patent: 6888330 (2005-05-01), Arimitsu
patent: 2002/0097015 (2002-07-01), Kitajima et al.
patent: 2004/0056629 (2004-03-01), Maeda et al.
patent: 2004/0169482 (2004-09-01), Maeda
patent: 2005/0001572 (2005-01-01), Benchaib et al.
patent: 2005/0088861 (2005-04-01), Baumgart
patent: 848 487 (1998-06-01), None
patent: 1 107 448 (2001-06-01), None
Oleschuck V. et al: Synchronized Pulsewidth Modulation for Different Control Regimes of AC Drives; IECON-2002. Proceedings of the 28th. Annual Conference of the IEEE Industrial Electronic Socieity. Sevilla, Spain, Nov. 5-8, 2002, Annual Conference of the IEEE Industrial Electronics Society, New York, NY: IEEE, U.S. vol. 1 of 4. Conf 28, Nov. 5, 2002, pp. 1416-1421, XP010632913.
Patent Abstracts of Japan, vol. 1998, No. 1, Jan. 30, 1998 & JP 09 247953, Sep. 19, 1997.
Alacoque Jean-Claude
Benchaib Abdelkrim
Poullain Serge
Thomas Jean-Luc
ALSTOM
Ip Paul
Sughrue & Mion, PLLC
LandOfFree
Method and system for regulating instantaneous... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method and system for regulating instantaneous..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and system for regulating instantaneous... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3709077