Electric power conversion systems – Current conversion – Having plural converters for single conversion
Patent
1996-08-01
1998-01-27
Wong, Peter S.
Electric power conversion systems
Current conversion
Having plural converters for single conversion
363 52, 361614, H02H 7125
Patent
active
057127794
ABSTRACT:
A DC electrical power supply system for converting AC power to DC power for various telecommunications equipment loads includes plural rectifiers mounted on one or more shelves and adapted to be inserted on and removed from said shelves, at will. One or more voltage converters may be inserted and removed from said shelves at will and include adapter plates for supporting the converters in place of a rectifier unit. The power supply system includes a frame supporting the shelves and a cabinet which includes busworks for connecting the rectifiers to circuit breaker tiers and to a battery pack. Low voltage disconnect devices may be interposed in the buswork at selected locations to provide operation in a battery protection mode, load protection mode and load shedding mode. The circuit breaker tiers, buswork, shelving, rectifier units and converters are all accessible for connection and disconnection from the front side of the power supply system. The power supply system includes digital microprocessor controls for controlling and monitoring system voltage, individual rectifier voltages, system and individual rectifier current output, status of each rectifier, converter circuit breaker and low voltage disconnect devices, as well as other operating parameters. Each rectifier unit may be controlled to provide staged current output or walkin during load startup or rapid increase.
REFERENCES:
patent: 4335437 (1982-06-01), Wilson et al.
patent: 5406050 (1995-04-01), Macomber et al.
patent: 5576941 (1996-11-01), Nguyen et al.
Barnett Mark L.
Lehmann Guenter H.
Oguz Arif
Sheppard J. Steven
Vasquez Richard
Riley Shawn
Wong Peter S.
Yuasa Exide, Inc.
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