Method and system for operating a motor to avoid selected...

Details Method and system for operating a motor to avoid selected... Method and system for operating a motor to avoid selected...

2007-04-23

2010-02-09

Duda, Rina I (Department: 2837)

Electricity: motive power systems

Positional servo systems

Unwanted harmonic or voltage component elimination...

C318S632000

Reexamination Certificate

active

07659684

ABSTRACT:
A method and system for operating a motor are provided. Power is provided to the motor through at least one switch operating at a first switching frequency. A pulse ratio of the motor is calculated based on the first switching frequency. The at least one switch is operated at a second switching frequency if the calculated pulse ratio is less than a first pulse ratio value and greater than a second pulse ratio value.

REFERENCES:
patent: 3808481 (1974-04-01), Rippel
patent: 5486748 (1996-01-01), Konrad et al.
patent: 5604672 (1997-02-01), Yoshida et al.
patent: 6236184 (2001-05-01), Baker

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