System for providing assured power to a critical load

Details System for providing assured power to a critical load System for providing assured power to a critical load

2006-06-13

2006-06-13

Sircus, Brian (Department: 2836)

Electrical transmission or interconnection systems

Plural supply circuits or sources

One source floats across or compensates for other source

C307S064000

Reexamination Certificate

active

07061139

ABSTRACT:
A first AC power source comprising a power plant (18), and a second power source, typically grid (10), are normally connected via a high speed isolation switching means (19) to provide sufficient AC power to a critical load (14). The power plant (18) comprises a power generating means, e.g. a fuel cell, (60) and a power conditioning system (PCS) (62) having an inverter (64). Power assurance means (65; 10″, 66, 64, 70; 74, 75) is/are operatively connected to at least one of the first and second power sources to enhance an even and continuous supply of power to the critical load (14). The power assurance means (65; 10″, 66, 64, 70; 74, 75) is/are operatively connected to the PCS inverter (64), and may be one, or a combination of, a surge suppression means (65), a double-conversion power connection means (10″, 66, 64, 70) having a rectifier (66); and/or stored energy means (74), such as a capacitor (75).

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