Method and apparatus for providing startup power to a genset-bac

Details Method and apparatus for providing startup power to a genset-bac Method and apparatus for providing startup power to a genset-bac

1996-09-09

1998-06-16

Shoop, Jr., William M.

Electrical transmission or interconnection systems

Plural supply circuits or sources

Substitute or emergency source

307 18, 307 66, 307 68, 318150, 318161, 323201, 363 34, 363 37, 364492, H02J 714

Patent

active

057675910

ABSTRACT:
An uninterruptible power supply provides improved reliability by supplying temporary standby power to a critical load and startup power to a backup power source from a single energy storage system. In the preferred embodiment, a flywheel energy storage device that produces three-phase AC voltage is used to provide temporary power to a critical load while a backup power supply, such as a diesel generator set (GENSET), is accelerated to full speed. The startup power for the GENSET is also provided from the flywheel energy storage device through a circuit that converts the AC voltage at one level to DC voltage at a lower level (e.g., 12 or 24 volts). Therefore, backup power will be provided from the GENSET unless a catastrophic failure occurs in the GENSET itself.

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