Electricity: single generator systems – Generator control – Combined permanent magnet and wound field structure
Patent
1996-08-12
1998-07-14
Stephan, Steven L.
Electricity: single generator systems
Generator control
Combined permanent magnet and wound field structure
322 29, 290 49, H02P 944
Patent
active
057809984
ABSTRACT:
A particularly advantageous power converter, suitable for use in an engine powered generator system. A signal simulating a desired AC waveform is produced by a converter circuit at first and second converter output terminals. The converter circuit, responsive to respective switching signals applied thereto, selectively effects current paths between a juncture node and one of the first and second converter output terminals and between a common rail and the other of the first and second converter output terminals. A controller selectively generates control signals to the converter circuit and to a mechanism for varying the magnitude of the juncture node voltage, to create a predetermined waveform at the converter output terminals simulating the desired AC waveform. A number of alternative embodiments for producing a simulated sine wave are described, as well as accommodations for inductive loads, and mechanisms for minimizing power dissipation during the switching interval.
REFERENCES:
patent: 5225712 (1993-07-01), Erdman
patent: 5376877 (1994-12-01), Kern et al.
patent: 5512811 (1996-04-01), Latos et al.
patent: 5581168 (1996-12-01), Rozman et al.
Anderson William
Pandya Kandarp I.
Scott Harold C.
Sun Chiping
Coleman Powermate, Inc.
Lechter Michael A.
Ponomarenko Nicholas
Stephan Steven L.
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