Electrical transmission or interconnection systems – Plural load circuit systems – Plural sources of supply
Patent
1980-07-28
1986-05-06
Dwyer, James L.
Electrical transmission or interconnection systems
Plural load circuit systems
Plural sources of supply
307 9, 322 8, H02J 314
Patent
active
045874360
ABSTRACT:
The invention is a two-level power system for electrically powered aircraft sub-systems. An aircraft engine (2) drives a three phase generator (30) at a variable speed. The output of generator (30) is primary variable-voltage/variable-frequency (VV-VF) power which is utilized by various aircraft subsystems. A portion of the primary VV-VF power is converted to constant voltage-constant frequency (CV-CF) power by an inverter (31) which includes front end rectification. The CV-CF power is then available to selected aircraft subsystems while portions of the CV-CF power are converted by rectifier (32) and transformer-rectifier (33) into 270 vdc and 28 vdc power, respectively, which power is also then available to aircraft sub-systems.
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Dachs Louis L.
Dwyer James L.
Lockheed Corporation
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