Shredder motor circuit with power factor correction

Details Shredder motor circuit with power factor correction Shredder motor circuit with power factor correction

1994-04-21

1996-10-01

Sircus, Brian

Electricity: motive power systems

Induction motor systems

Power-factor control

318438, 318809, H02P 500

Patent

active

055613560

ABSTRACT:
A shredder motor circuit with power factor correction is provided. A permanent split capacitor motor under full load will run at peak efficiency with a high power factor. However, at no-load or at partial load the power factor will drop significantly, resulting in wasted energy and a possible overheating of the motor. This condition is inventively corrected by the present invention by lowering the voltage to the motor when the motor is partially loaded. The purpose of this shredder motor circuit with power factor correction is to vary the voltage to the motor instantaneously as the load changes due to increased amounts of paper placed in the shredder and thereby supplying the right amount of power required to result in higher efficiency and a cooler operating motor.

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patent: 5276392 (1994-01-01), Beckerman
patent: 5373223 (1994-12-01), Akagi et al.

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