Patent · US Active

Decentralized power management in an elevator system

US11613444B2 · kind B2 · utility

0Cited by

11References

13Claims

0Family size

Assignee

OTIS ELEVATOR COMPANY · US

Inventors

Virgilio Valdivia Guerrero · Roquetas de Mar, ES
Ismail Agirman · Southington, US
Daniel Diaz-Lopez · Madrid, ES
Mario Sanz Abia · Valladolid, ES
Herbert Horbrugger · Berlin, DE
Stephan Glessner · Berlin, DE

Key dates

Filing date	Oct 16, 2019
Grant date	Mar 28, 2023
Priority date	—
Expiry date	Jul 31, 2041

Classification

Technology area (CPC H)Electricity
CPC primaryH02P2201/03
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

A power management system comprises an AC-power-source controller configured to control power supply between the AC power source and a common DC bus, the AC-power-source controller further configured to limit AC power supplied from the AC power source to the common DC bus to a first AC-power-source power limit; a power inverter configured to invert the DC power on the common DC bus into AC output power for driving the electric motor; a DC power source configured to supply DC power to the common DC bus; and a DC-power-source controller configured to control power supply between the DC power source and the common DC bus, the DC-power-source controller further configured to start supplying DC power from the DC power source to the common DC bus in response to a detection of a voltage drop on the common DC bus from a AC-power-source reference voltage to a DC-power-source reference voltage.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.