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Method for UPS Control by External Device

IP.com Disclosure Number: IPCOM000123041D
Original Publication Date: 1998-Apr-01
Included in the Prior Art Database: 2005-Apr-04
Document File: 2 page(s) / 73K

Publishing Venue

IBM

Related People

Takahara, T: AUTHOR [+2]

Abstract

Disclosed is a method for UPS (Uninterruptible Power System) control by external device. Recently, a small size UPS for a desk top type workstation ( or a PC (Personal Computer) sever ), has been having auto shutdown function to secure application data and Operating System working on the workstation. Also the small size UPS supports scheduled operation for the workstation to perform an automated operation.

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Method for UPS Control by External Device

        Disclosed is a method for UPS (Uninterruptible Power System)
control by external device.  Recently, a small size UPS for a desk
top type workstation ( or a PC (Personal Computer) sever ), has been
having auto shutdown function to secure application data and
Operating System working on the workstation.  Also the small size UPS
supports scheduled operation for the workstation to perform an
automated operation.

  The automated operation by the small size UPS is realized by
incorporating an auto shutdown function card in a small UPS inside
after modifying UPS inside mechanical structure.  To incorporate the
auto shutdown card into inside UPS leads one good merit, which is to
avoid UPS battery over-discharge by stopping UPS inverter operation
after completion of workstation shutdown.  This auto shutdown
function is also asked for middle and large size UPS with the merit
of avoiding  UPS battery over-discharge.  This article describes how
to realize these  requirements without incorporating an auto shutdown
function card inside  of middle and large size UPS.

  The new interface to satisfy requirements in middle and large UPS
is shown in Figure 1 and total operation flow is shown in Figure 2.