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System and method for maximized battery run-time in a parallel UPS system

A running time and battery technology, applied in the direction of converting irreversible DC power input to AC power output, electrical components, circuit devices, etc., can solve the problems of UPS module overload, reduce battery running time, etc.

Active Publication Date: 2010-06-09
VERTIV CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This reduces the run time available from the remaining batteries and may overload the remaining UPS modules

Method used

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  • System and method for maximized battery run-time in a parallel UPS system
  • System and method for maximized battery run-time in a parallel UPS system
  • System and method for maximized battery run-time in a parallel UPS system

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Embodiment Construction

[0011] Illustrative embodiments of the invention are described below. In the interest of clarity, not all features of an actual implementation are described in this specification. It will be appreciated that in the development of any such actual embodiment, a number of implementation-specific decisions must be made in order to achieve the developer's specified goals, such as compliance with system-related and business-related constraints, which vary as the implementation It varies from person to person. Furthermore, it will be appreciated that such a developmental effort might be complex and time-consuming, but would nevertheless be a routine undertaking for those of ordinary skill in the art having benefit of this disclosure.

[0012] figure 1 An uninterruptible power supply according to an embodiment of the invention is shown. The system includes a plurality of UPS modules 10 . Each UPS module in this example has a rectifier 16 , a battery 18 , an inverter 20 and a contr...

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Abstract

An uninterruptible power supply (UPS) includes a plurality of UPS modules. Each of the UPS modules has a battery that provides power to a protected load in the event of a utility power failure. A plurality of controllers control how much power each of the batteries deliver to the protected load, and a communication bus allows the controllers to exchange information about the battery voltages. Oneof the controllers calculates the average battery voltage of the plurality of batteries and adjusts the amount of energy provided by an individual battery such that the battery voltage is about equalto the average battery voltage.

Description

[0001] This application claims priority to US Provisional Patent Application No. 60 / 595,446, filed July 6, 2005, which is incorporated herein by reference. technical field [0002] The present invention relates generally to uninterruptible power supplies ("UPS"), and more particularly, to methods and apparatus for maximizing the run time of batteries in parallel UPS systems. Background technique [0003] Uninterruptible power supplies are designed to provide continuous power to critical loads in the event of a temporary failure of utility power. In some systems, multiple UPS modules are paralleled together to provide power to critical loads. Each UPS module generally includes a rectifier (rectifier), a battery and an inverter (inverter). In the event of a utility power outage, the critical loads will be powered by DC power from the batteries in the UPS modules. This direct current is converted to alternating current by the inverter of the UPS module before being sent to th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02M7/48H02J9/06
CPCH02J9/062H02M7/493H02J3/005H02J3/46H02J3/007
Inventor B·希伯K·埃施霍芬M·N·马尔瓦利T·布什
Owner VERTIV CORP