Power plants – Fluid motor means driven by waste heat or by exhaust energy... – With supercharging means for engine
Patent
1993-03-30
1994-06-28
Bertsch, Richard A.
Power plants
Fluid motor means driven by waste heat or by exhaust energy...
With supercharging means for engine
290 52, F02B 3344
Patent
active
053236130
ABSTRACT:
A motor-generator voltage controller for a turbocharger is provided with a transformer and a switching circuit mechanism. The transformer has input and output windings with the output windings being connected to the motor-generator. The input windings of the transformer have first and second portions. The winding ratio between the first portion of the input windings and the output windings is input power supply voltage: motor drive voltage. The switching circuit mechanism connects the second portion of the input windings to the input power supply when the motor-generator is operated as a motor so that the transformer functions as an invertor. The switching circuit mechanism connects the first portion of the input windings to the input powers apply when the motor-generator is operated as a generator. The motor-generator voltage controller has three transformers and three corresponding switching circuit mechanisms, one for each of a U-phase, a V-phase and a W-phase. A controller controls each of the three switching circuit mechanisms.
REFERENCES:
patent: 4756377 (1988-07-01), Kawamura et al.
patent: 4798257 (1989-01-01), Kawamura et al.
Bertsch Richard A.
Freay Charles G.
Isuzu Motors Limited
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