Electricity: motive power systems – Switched reluctance motor commutation control
Reexamination Certificate
2004-03-24
2008-08-05
Donovan, Lincoln (Department: 2837)
Electricity: motive power systems
Switched reluctance motor commutation control
C318S434000, C318S132000, C318S759000
Reexamination Certificate
active
07408312
ABSTRACT:
A control device for a permanent magnet synchronous motor includes: an inverter9for converting inputted DC voltage into AC voltage of variable-voltage and variable-frequency, and driving a motor14with the AC voltage; a speed controller22for generating, in accordance with a speed instruction signal, a q-axis current component orthogonal to the magnetic field of the motor14; a loss calculating means50for calculating a loss by summing a copper loss and an iron loss in the motor14; a d-axis current generating means52for generating, in accordance with the value that is the motor's rated loss decreased by the loss, a d-axis current instruction signal to flow into the motor14; and a resistor-on-judgment unit58for judging, from the DC voltage, whether or not the motor14operates in its recovery state and activating the d-axis current generator52while in the recovery state.
REFERENCES:
patent: 4450395 (1984-05-01), Kawamura et al.
patent: 5459386 (1995-10-01), Okachi et al.
patent: 5569995 (1996-10-01), Kusaka et al.
patent: 5652495 (1997-07-01), Narazaki et al.
patent: 5689166 (1997-11-01), Nagayama et al.
patent: 5923728 (1999-07-01), Ikkai et al.
patent: 5936378 (1999-08-01), Iijima et al.
patent: 6194864 (2001-02-01), Kinpara et al.
patent: 6326762 (2001-12-01), Jiang et al.
patent: 6541937 (2003-04-01), Kato
patent: 6591758 (2003-07-01), Kumar
patent: 6700400 (2004-03-01), Atarashi
patent: 6965212 (2005-11-01), Wang et al.
patent: 2002/0113615 (2002-08-01), Atarashi
patent: 2005/0285556 (2005-12-01), Chen et al.
patent: 2007/0278986 (2007-12-01), Okamura
patent: 5-137377 (1993-06-01), None
patent: 2001-95300 (2001-04-01), None
patent: 2003-47300 (2003-02-01), None
Horii Keita
Itou Nobuo
Colon Eduardo
Donovan Lincoln
Mitsubishi Electric Corporation
Sughrue & Mion, PLLC
LandOfFree
Control device for permanent magnet synchronous motor does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Control device for permanent magnet synchronous motor, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Control device for permanent magnet synchronous motor will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4015112