This is a NAVAL
POSTGRADUATE SCHOOL
MONTEREY CA report
procured by the
Pentagon and made
available for public
release It has been reproduced in the best form available to the Pentagon and assembled with Velobinding in a soft, white linen cover. The abstract provided by the Pentagon follows. The U. S. Navy is pursuing an all electric ship that will require enormous amounts of power for applications such as electric propulsion. Reliability and redundancy in the electronics are imperative, since failure of a critical system could leave a ship stranded and vulnerable. A parallel inverter drive topology has been proposed to provide reliability and redundancy through load sharing. The parallel architecture enables some functionality in the event that one of the inverters fails. This thesis explores paralleling current-mode inverters of different power levels and fidelities. A 50-kVA, three-phase hysteresis controlled inverter is designed built and tested at low power. The inverter is then tested in parallel with a low frequency, bulk inverter to demonstrate current sharing capability..
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