Title:
OUTLET IN-RUSH CURRENT LIMITER FOR INTELLIGENT POWER STRIP
Document Type and Number:
Japanese Patent JP2023178969
Kind Code:
A
Abstract:
To provide a rack power distribution unit (RPDU) that automatically and safely switches power to one or more receptacles.SOLUTION: An RPDU includes one or more processors utilizing control algorithms that manage bistable relays so that in-rush current is minimized upon manual connection/disconnection of power to a load device. In particular, relay contact status (open/closed) is identified based on changes in RMS or peak voltage influenced by the load impedance. The RPDU predicts timings for voltage zero-crossing events. In this manner, and based on the determination of relay contact status and voltage zero-crossing prediction, an open relay contact is identified, and is safely closed at voltage zero-crossing.SELECTED DRAWING: Figure 1
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Inventors:
KEVIN R FERGUSON
CASEY GILSON
COOPER SCOTT
JASON ARMSTRONG
CASEY GILSON
COOPER SCOTT
JASON ARMSTRONG
Application Number:
JP2023092592A
Publication Date:
December 18, 2023
Filing Date:
June 05, 2023
Export Citation:
Assignee:
VERTIV CORP
International Classes:
H02H7/00; H01H9/54; H01H47/00
Attorney, Agent or Firm:
Shuichiro Ariyoshi
Yasuyuki Morita
Nobuyoshi Tsutsui
Satoko Endo
Yasuyuki Morita
Nobuyoshi Tsutsui
Satoko Endo