Electricity: motive power systems – Positional servo systems – 'reset' systems
Reexamination Certificate
2007-09-18
2007-09-18
Donovan, Lincoln (Department: 2837)
Electricity: motive power systems
Positional servo systems
'reset' systems
C318S432000, C318S434000
Reexamination Certificate
active
11268511
ABSTRACT:
Disclosed is a method and device for controlling the startup of a synchronous reluctance motor. The device includes: a voltage injector which generates injection voltages to estimate an initial position of the rotor; a motor drive voltage generator which converts stationary-coordinate-system voltages including the injection voltages to three-phase motor drive voltages and applies the three-phase motor drive voltages to the motor; a current extractor which extracts response current components iα-inj, iβ-injin respect to the injection voltages from two-phase stationary-coordinate-system currents converted from three-phase currents detected upon rotation of the motor; and a position/speed estimator which extracts response current components related to a rotor position from the response current components iα-inj, iβ-injin respect to the injection voltages to calculate a rotor position error (e), and estimates the speed and position {tilde over (ω)},{tilde over (θ)} of the rotor from the calculated rotor position error (e).
REFERENCES:
patent: 6137258 (2000-10-01), Jansen
patent: 6639380 (2003-10-01), Sul et al.
Cheong Dal-ho
Lee Gil-su
Lee Kyung-hoon
Donovan Lincoln
Glass Erick
LG Electronics Inc.
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