Circuit arrangement for controlled power supply devices particul

Details Circuit arrangement for controlled power supply devices particul Circuit arrangement for controlled power supply devices particul

1985-05-08

1987-01-27

Wong, Peter S.

Electric power conversion systems

Current conversion

With means to introduce or eliminate frequency components

363 48, H02M 114

Patent

active

046398473

ABSTRACT:
A circuit for controlled power supply devices, particularly for autoconverters, for suppressing the oscillatory tendency in such device has an input filter forming a parallel oscillator circuit, which can be excited to oscillations on the basis of a partially negative input impedance of the autoconverter. A series oscillator circuit is connected to the parallel oscillating circuit and is tuned to the resonant frequency thereof, such that an impedance minimum occurs at the resonant frequency, whereas the parallel resonant maximums of the impedance, which appear at a lower and at a higher frequency, can be damped by a comparatively small ohmic resistance, such that unwanted oscillations are prevented. The circuit represents a low capacitive load to the feed network, and exhibits low dissipated power through the ohmic resistor, making the circuit particularly adapted for high output power packs which are operated by a three-phase network.

REFERENCES:
patent: 3746963 (1973-07-01), VeNard, II

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