Electric power conversion systems – Current conversion – With means to introduce or eliminate frequency components
Patent
1978-04-10
1979-03-06
Shoop, William M.
Electric power conversion systems
Current conversion
With means to introduce or eliminate frequency components
363 27, 363 65, 363 87, 363129, H02M 112, H02M 114
Patent
active
041434145
ABSTRACT:
A three phase AC to DC voltage converter includes separate single phase AC to DC converters for each phase of a three phase source with the DC voltage output of the three converters paralleled and controlled to provide necessary regulation. Each of the single phase AC to DC converters includes a full-wave bridge rectifier feeding a substantially resistive load including an inverter and a second single phase full-wave bridge rectifier. To the extent that each inverter and second single phase full-wave bridge rectifier approximate a resistive load, the source current harmonics are reduced. Additionally, the triplen harmonics produced in the three phase source lines by each of the three AC to DC converters are cancelled by the triplen harmonics produced in the three phase source lines by the remaining two AC to DC converters.
REFERENCES:
patent: 3746967 (1973-07-01), Koltuniak et al.
patent: 3845374 (1974-10-01), Clarady et al.
patent: 3852655 (1974-12-01), Justice
patent: 4062057 (1977-12-01), Perkins et al.
Barrett Alfred H.
Brewster Roger F.
Conkey Howard N.
General Motors Corporation
Shoop William M.
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