Electricity: motive power systems – Power factor control of armature or line circuit
Reexamination Certificate
2006-09-12
2006-09-12
Masih, Karen (Department: 2837)
Electricity: motive power systems
Power factor control of armature or line circuit
C318S254100, C318S132000, C318S434000, C318S727000, C318S008000
Reexamination Certificate
active
07106018
ABSTRACT:
A method of balancing the rotation of a motor is provided. Whether or not the motor is in a balanced rotation is determined by detecting whether the variation of a power-factor angle is less than or equal to a preset balance angle according to the principle that the load on a motor has an effect on the variation of the power-factor angle. The determined balance state of the motor is used to adjust the rotation speed of the motor.
REFERENCES:
patent: 3997825 (1976-12-01), Miyasita et al.
patent: 2002/0149342 (2002-10-01), Nakata et al.
patent: 2002/0190685 (2002-12-01), Sadasivam et al.
Chen Cheng-Te
Hsieh Ting-Chung
Delta Electronics , Inc.
Masih Karen
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