Dual AC power supply input module

Details Dual AC power supply input module Dual AC power supply input module

1996-12-17

1998-08-04

Berhane, Adolf

Electric power conversion systems

Current conversion

Having plural converters for single conversion

307 82, H02M 7155

Patent

active

057903948

ABSTRACT:
A dual AC input module providing AC line isolation of different phases without the use of relay control. Power supply load is supported through two AC line feeds, each feed being connected through a bridge rectifier to a common bulk DC power supply backplane. The parallel configuration of AC line feeds and bridge rectifiers eliminates the need for relay control logic to open relays and isolate a failed primary AC line feed prior to closing relays to connect a second AC feed to the power supply, as required with previous dual AC input module designs to isolate different line feeds of different phases.

REFERENCES:
patent: 3984750 (1976-10-01), Pfeffer et al.
patent: 4239978 (1980-12-01), Kofink
patent: 4734844 (1988-03-01), Rhoads
patent: 5638264 (1997-06-01), Hayashi et al.

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