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Smart power strip that manages bistable relays to reduce inrush current

A relay, bistable technology, used in emergency protection circuit devices for limiting overcurrent/overvoltage, protections that react to overcurrent, circuits, etc., can solve the problems of circuit breaker tripping, expensive, etc.

Active Publication Date: 2019-09-03
VERTIV CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This also causes the upstream circuit protection device to trip, typically a circuit breaker
Some relay manufacturers offer more expensive devices capable of handling momentary current surges up to four times their design rating

Method used

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  • Smart power strip that manages bistable relays to reduce inrush current
  • Smart power strip that manages bistable relays to reduce inrush current
  • Smart power strip that manages bistable relays to reduce inrush current

Examples

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Embodiment Construction

[0017] Example embodiments will now be described more fully with reference to the accompanying drawings.

[0018] According to one aspect of the present disclosure, bi-stable relays of a smart switchboard are managed such that inrush current is minimized when power is restored after a loss. Since the relays are bistable, their last state is continuous regardless of power conditions. When power is lost, the bistable relays are controlled such that all closed bistable relays are automatically opened. Loss of power may be due to: loss of source AC power from the upstream utility company, failure of an uninterruptible power supply ("UPS") upstream of the smart panel providing power to the smart panel, or a circuit breaker failure due to an overcurrent condition And tripped. During the next power-up cycle, the bistable relays to be closed are closed sequentially, with each of such bistable relays being closed every N line cycles to minimize the total inrush current and prevent up...

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PUM

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Abstract

The present disclosure relates to a power distribution unit (PDU) having at least one power receptacle for enabling an AC power line of an external device to be attached to the at least one power receptacle. A branch receptacle controller (BRC) has at least one bistable relay and is associated with one power outlet for providing AC power from the AC source to the one power outlet. The BRC monitors a parameter of line voltage, uses this parameter to detect when AC power is lost, and then switches the bistable relay to the open position if the relay is in the closed position. The Rack Power Distribution Unit Controller (RPDUC) monitors the bi-stable relay and commands the BRC to close the bi-stable relay after AC power is restored.

Description

[0001] Cross References to Related Applications [0002] This application claims priority to US Utility Model Application No. 15 / 095,576, filed April 11, 2016 and also claims the benefit of US Provisional Patent Application No. 62 / 152,126, filed April 24, 2015. The entire disclosure of the above application is incorporated herein by reference. technical field [0003] The present disclosure relates to smart power strips having bistable relays, and more particularly to the ability to control multiple bistable relays in a manner that limits the inrush current when an external device powered by the smart power strip is turned on Smart power strip. Background technique [0004] This section provides background information related to the present disclosure which is not necessarily prior art. [0005] Some models of smart power strips use power relays typically rated less than 250V 20A root mean square (rms) to switch the line to the outlet, primarily in order to restart connect...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02H9/02H02H3/08H02H3/06H02H3/46H02H1/04H01R13/70H02J3/00H04Q9/00H05K7/14
CPCH02H1/043H02H3/06H02H3/08H02H3/46H04Q9/00H04Q2209/60H01R13/70H02H9/02H02J3/00H05K7/1492
Inventor 凯文·R·弗格森
Owner VERTIV CORP