Electricity: motive power systems – Induction motor systems – Primary circuit control
Reexamination Certificate
2006-05-09
2006-05-09
Leykin, Rita (Department: 2837)
Electricity: motive power systems
Induction motor systems
Primary circuit control
C318S810000, C318S722000
Reexamination Certificate
active
07042194
ABSTRACT:
A controller for a wound-rotor induction motor includes a first voltage-type converter connected to a secondary winding of the motor, a capacitor for smoothing DC output thereof, a second voltage-type converter to supply an AC power supply with regenerated secondary power, a speed detector of the motor, a secondary current detector of the motor, a DC voltage detector applied to the capacitor, a speed controller for controlling the speed by the speed detector and outputting a secondary referential current, a first PWM controller to control the secondary current in response to the referential current, and to output a voltage signal by witch switching elements of the first voltage-type converter are controlled by PWM, and a second PWM controller to control a voltage output from the voltage detector in response to a referential voltage, and to control by PWM switching elements of the second voltage-type converter.
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patent: 2003-134871 (2003-05-01), None
Deguchi Kazuyuki
Kuroiwa Akihiko
Leykin Rita
Toshiba Mitsubishi-Electric Indus. Sys. Corp.
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