Method and system for determining, for any instant in time, total peak power consumption for bank of elevator cars

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EP 2 003 080 A8

(12)	CORRECTED EUROPEAN PATENT APPLICATION
	Note: Bibliography reflects the latest situation

(15)	Correction information:
	Corrected version no 1 (W1 A1)

(48)	Corrigendum issued on:
	25.03.2009 Bulletin 2009/13

(43)	Date of publication:
	17.12.2008 Bulletin 2008/51

(21)	Application number: 08006505.5

(22)	Date of filing: 31.03.2008

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International Patent Classification (IPC):

B66B 1/20^(2006.01)

B66B 1/24^(2006.01)

(84)	Designated Contracting States:
	AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MT NL NO PL PT RO SE SI SK TR
	Designated Extension States:
	AL BA MK RS

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Priority:

12.06.2007 US 761683

(71)	Applicant: MITSUBISHI ELECTRIC CORPORATION
	Chiyoda-ku Tokyo 100-8310 (JP)

(72)	Inventors:
	Nikovski, Daniel N. Cambridge MA 02142 (US) Brand, Matthew E. Newtonville MA 02460 (US)

(74)	Representative: Pfenning, Meinig & Partner GbR
	Patent- und Rechtsanwälte Theresienhöhe 13 80339 München 80339 München (DE)

(54)	Method and system for determining, for any instant in time, total peak power consumption for bank of elevator cars

(57) A method and system determine peak power consumption over time (401) by a bank of elevator for servicing a set of passenger hall calls and delivery requests, and selecting elevator schedules that keep peak power consumption below a predetermined threshold. For each car in response to receiving a hall call, a set of all possible paths to service all hall calls assigned to the car are determined, in which each path includes a set of all possible segments (100). A peak power consumption for each possible segment is also determined (200). The peak power consumptions for the set of all possible segments for each time instant are added to determine a total peak power consumption for each time instant, and a particular path is selected as a schedule to operate the bank of elevator cars, if the total peak power consumption for any instant in time while operating according to the selected schedule is below a predetermined threshold.