Electric power conversion systems – Current conversion – Having plural converters for single conversion
Patent
1998-09-04
2000-02-29
Han, Y. J.
Electric power conversion systems
Current conversion
Having plural converters for single conversion
323225, H02M 700
Patent
active
060317469
ABSTRACT:
A partial-voltage buck regulator controls a high-voltage bus to a full-bridge circuit such that overall switching losses are reduced and distributed. Low-voltage buck regulator devices are PWM-switched when high output voltage is needed, and high-voltage bridge devices are PWM-switched when low output voltage is needed. A variable input power supply, which may be operated in a high power factor mode, can adjust the input bus voltages to achieve optimum performance for a given magnetic resonance imaging sequence.
REFERENCES:
patent: 4864479 (1989-09-01), Steigerwald et al.
patent: 5576940 (1996-11-01), Steigerwald et al.
patent: 5663647 (1997-09-01), Wirth et al.
Park John Norton
Steigerwald Robert Louis
Stevanovic Ljubisa Dragolijub
Wirth William Frederick
Breedlove Jill M.
General Electric Company
Han Y. J.
Stoner Douglas E.
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