Automatic symmetry correction circuit for a symmetrical current

Details Automatic symmetry correction circuit for a symmetrical current Automatic symmetry correction circuit for a symmetrical current

1986-12-03

1988-06-14

Salce, Patrick R.

Electric power conversion systems

Current conversion

Including d.c.-a.c.-d.c. converter

363 56, 363 97, H02M 3315

Patent

active

047516283

ABSTRACT:
An automatic symmetry correction circuit is provided for a symmetrical current chopper. This structure includes two current channels controlled alternately by two signals of frequency f.
A resonant LC circuit is tuned to the frequency f and energized by the currents passing through each of the two channels.
A control circuit is coupled to the resonance circuit for adjusting the symmetry between the amplitudes of the currents flowing through each of the two channels as a function of the amplitude of the oscillations of frequency f generated by the resonance circuit.

REFERENCES:
patent: 4233658 (1980-11-01), Lupatin et al.
patent: 4293902 (1981-10-01), White
patent: 4301499 (1981-11-01), Levinson
patent: 4541041 (1985-09-01), Park et al.
patent: 4553198 (1985-11-01), Chan et al.

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