Unity power factor converter

Details Unity power factor converter Unity power factor converter

1978-06-08

1980-03-11

Shoop, William M.

Electric power conversion systems

Current conversion

With condition responsive means to control the output...

363 89, 363126, 323102, H02M 770

Patent

active

041931114

ABSTRACT:
A unity power factor converter capable of effecting either inversion (dc-to-dc) or rectification (ac-to-dc), and capable of providing bilateral power control from a DC source (or load) through an AC transmission line to a DC load (or source) for power flow in either direction, is comprised of comparators for comparing the AC current i with an AC signal i.sub.ref (or its phase inversion) derived from the AC ports to generate control signals to operate a switch control circuit for high speed switching to shape the AC current waveform to a sine waveform, and synchronize it in phase and frequency with the AC voltage at the AC ports, by selectively switching the connections to a series inductor as required to increase or decrease the current i.

REFERENCES:
patent: 3896348 (1975-07-01), Loderer
patent: 3909698 (1975-09-01), Nill
patent: 3961152 (1976-06-01), Staats
patent: 4009433 (1977-02-01), Moltgen
patent: 4013937 (1977-03-01), Pelly et al.
patent: 4119907 (1978-10-01), Quinn

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