Electricity: motive power systems – Induction motor systems – Primary circuit control
Reexamination Certificate
2007-04-24
2007-04-24
Duda, Rina (Department: 2837)
Electricity: motive power systems
Induction motor systems
Primary circuit control
C318S254100, C318S132000, C318S727000, C318S432000, C318S461000
Reexamination Certificate
active
11426608
ABSTRACT:
A method, computer-readable code, and controller are provided for controlling a cycle-skipping control system having at least one cycle skipper connected to a multi-phase AC (alternating current) power source to drive a variable frequency load. A respective firing sequence is generated to be applied to a plurality of power switches in the cycle skipper for implementing a desired mode of operation. The stream of pulses may be arranged to form a grouping of two or more closely adjacent pulses over a time interval, wherein each pulse grouping contributes a desired spectral power over the time interval, and further wherein each pulse grouping enables to spread the power over the time interval as compared to a single pulse having the desired spectral power, thereby reducing harmonic components in currents supplied by the power source.
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Kumar Ajith K.
Nikolov Emil Nikolaev
Worden Bret D.
Duda Rina
General Electric Company
Hanze Carlos
Mora Enrique J.
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