Electric power conversion systems – Current conversion – Having plural converters for single conversion
Patent
1978-05-03
1980-01-29
Shoop, William M.
Electric power conversion systems
Current conversion
Having plural converters for single conversion
363 16, H02M 3335
Patent
active
041864379
ABSTRACT:
A true push-pull switching power amplifier is disclosed utilizing two dc-to-dc converters. Each converter is comprised of two inductances, one inductance in series with a DC source and the other inductor in series with the output load, and an electrical energy transferring device with storage capability, namely storage capacitance, with suitable switching means between the inductances to obtain DC level conversion, where the switching means allows bidirectional current (and power) flow, and the switching means of one dc-to-dc converter is driven by the complement of a square-wave switching signal for the other dc-to-dc converter for true push-pull operation. For reduction of current ripple, the inductances in each of the two converters may be coupled, and with proper design of the coupling, the ripple can be reduced to zero at either the input or the output, but preferably the output.
REFERENCES:
patent: 3351841 (1967-11-01), Lipman et al.
patent: 3668509 (1972-06-01), Riebs et al.
patent: 3986097 (1976-10-01), Woods
patent: 4019114 (1977-04-01), Huellwegen
patent: 4039927 (1977-08-01), Richards, Jr., et al.
California Institute of Technology
Shoop William M.
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