Electricity: motive power systems – Induction motor systems – Primary circuit control
Reexamination Certificate
2006-12-12
2006-12-12
Donovan, Lincoln (Department: 2837)
Electricity: motive power systems
Induction motor systems
Primary circuit control
C318S800000, C318S807000, C320S118000, C323S906000, C136S243000, C136S244000, C363S074000, C363S095000
Reexamination Certificate
active
07148650
ABSTRACT:
A method and apparatus are implemented in software to control motor speed as a function of available power in a DC source-inverter-AC motor system, i.e. to perform maximum power tracking of motor speed. An inverter or motor drive converts DC power from a DC source, such as a solar panel, to AC power, to power the motor. The inverter or motor drive is controlled by software, implemented either by programmable features built directly into the inverter or drive or by a separate programmable device connected to the inverter or drive, to track motor power as a function of source power. The software-controlled inverter or drive sets motor speed as a function of source power by sensing only a single parameter, the DC source voltage. The software-controlled inverter or drive samples the source voltage at preset intervals, and changes the frequency of the AC output of the inverter or drive to match or track the available power so that the motor operates at or near its optimum for any source voltage.
REFERENCES:
patent: 4494180 (1985-01-01), Streater et al.
patent: 4538100 (1985-08-01), Tuten et al.
patent: 4999560 (1991-03-01), Morishima et al.
patent: 5235266 (1993-08-01), Schaffrin
patent: 5747967 (1998-05-01), Muljadi et al.
patent: 6232742 (2001-05-01), Wacknov et al.
patent: 6275403 (2001-08-01), McNulty et al.
patent: 6950323 (2005-09-01), Achleitner et al.
patent: 2005/0067999 (2005-03-01), Okamura et al.
patent: 09073328 (1997-03-01), None
D.P. Holm and M.E. Ropp, Comparative Study of Maximum Power Point Tracking Algorithms, Prog. Photvolt: Res. Appl. 2003; 11:47-62.
Horta Juan Carlos
McNulty Thomas Charles
Plaisime Joacine
Colon Santana Eduardo
Donovan Lincoln
World Water & Power Corp.
LandOfFree
Maximum power point motor control does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Maximum power point motor control, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Maximum power point motor control will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3672400