Lucent Technologies Inc.

A S Herbert

Greg H Fasullo

Patrick Kwok-Yeung Ng

Gary Jay Turner

Bus structure for power system

An apparatus and method for initiating an intelligent battery discharge in an electrical system thereby allowing battery diagnostic testing to be performed more efficiently and more accurately. Specifically, the discharge is initiated by reducing the voltage being supplied to the electrical system by a main power supply such that the battery power supply begins supplying the system voltage. The output of the main power supply is only reduced to a predetermined non-zero level, such that the battery power supply will begin discharging while the main power supply continues to maintain a floor voltage. This floor voltage ensures that the system voltage will not fall below the floor voltage even if the battery power supply fails completely. Once the battery power supply begins discharging, the system voltage is monitored to determine whether the battery power supply is capable of supplying sufficient electrical power to maintain the system voltage above the floor voltage. If after a certain time the system voltage supplied by the battery power supply remains above the floor voltage, the voltage supplied by the main power supply is further reduced to allow for a deeper discharge of the battery power supply. The battery discharge is terminated either when the system voltage reaches a certain voltage level or once enough time has passed to obtain sufficient battery parameters in order to determine the condition of the battery power supply. The battery discharge is terminated by increasing the voltage supplied by the main power supply back to a normal voltage level for the electrical system, thus removing the need for the battery power supply to continue supplying the system voltage.

Battery diagnostic method and apparatus

A power system plant includes a backplane arrangement including a primary and secondary bus to which intermediate power processing modules are selectively connected to the input and output power control and monitors of the plant. The backplane connections are controlled by the plug-in power processing modules. the resulting connections are unique to the type of plug-in module placeed on an input shelf (i.e. rectifier or converter plug-in module) and determine how the plant is to operated. The connections of these plug-in modules to the backplane connector are such that the plug-in module is designed to have its connectors connect to either primary or secondary referenced control signals. The connectors of the backplane accept both type of plug-in modules so that any plug-in module inserted is automatically connected to respond to the appropriate primary or secondary referenced control signals.

Growing community of inventors

Richardson, TX, United States of America

A S Herbert