System for alleviating harmonic distortion

Details System for alleviating harmonic distortion System for alleviating harmonic distortion

1986-06-04

1987-07-07

Salce, Patrick R.

Electric power conversion systems

Current conversion

With means to introduce or eliminate frequency components

363 97, H02M 112

Patent

active

046791337

ABSTRACT:
A system is provided for alleviating harmonic distortion in a power supply having an AC input, a full wave rectifier and filter capacitors. The rectified voltage is chopped at a frequency that is higher than the frequency of the original AC waveform. The higher frequency cycle is provided by timing means coupled to the gate of a FET. The chopped and rectified voltage is stored in an inductor device during one portion of the higher frequency cycle and the energy from the inductor device is transferred to the filter capacitors during another portion of the higher frequency cycle. A reverse protection diode, and a capacitor for delivering high frequency energy to the FET are connected across the output of the full wave rectifier.

REFERENCES:
patent: 4599504 (1986-07-01), Ito
patent: 4607324 (1986-08-01), Gibbons

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