Electricity: motive power systems – Induction motor systems – Primary circuit control
Reexamination Certificate
2007-03-20
2007-03-20
Ro, Bentsu (Department: 2837)
Electricity: motive power systems
Induction motor systems
Primary circuit control
C318S431000, C388S906000, C388S917000
Reexamination Certificate
active
11375800
ABSTRACT:
Motor drives, motor speed controllers, motor speed estimation systems, and methods are presented for controlling motor startup speed and for estimating motor speed during startup, in which a speed estimate controller provides a rotor speed estimate based on a first error term from a torque-based MRAS component for a first range of motor speeds and based on a second error term from a rotor flux-based MRAS component for a second range of speeds.
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Lu Haihui
Qian Wei
Gerasimow Alexander M.
Haas Steven M.
Ro Bentsu
Rockwell Automation Technologies Inc.
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