ELECTRIC POWER SYSTEM OF CONVEYANCE FACILITY

Japanese Patent JP2016216154

A

PROBLEM TO BE SOLVED: To provide an electric power system which, with respect to a conveyance facility comprising a vertical conveyance machine and plural horizontal conveyance machines, reduces a load on primary side electric power equipment and effectively uses regenerative electric power.SOLUTION: An electric power system comprises an electric power conversion device 20 which converts AC power from a primary side electric power source 70 into a direct current by a rectifier 21 and then converts the same again into an alternating current suited for raising and lowering a vertical conveyance machine 90, and a control device 50 controlling the electric power conversion device 20. To a DC intermediate circuit 22 of the electric power conversion device 20, a power storage device 35 is connected via an auxiliary electric power device 30, and a raising and lowering inverter 29 for driving an electric motor of the vertical conveyance machine 90 and plural traversing inverters 28 for driving respective electric motors of horizontal conveyance machines 80 are connected.SELECTED DRAWING: Figure 2

JP4864620	Three-phase load operation device
WO/2019/093715	METHOD FOR PREDICTIVE MAINTENANCE AND HIGH EFFICIENCY OPERATION THROUGH ELEVATOR ANALYSIS
WO/2014/111127	ELEVATOR GROUP

TAKADA TOMOHARU
DODA TAKAHIRO

JP2015100041A

December 22, 2016

May 15, 2015

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HOKUSHO CO LTD

B66B1/34; B66B1/06; H02J7/34; H02J9/06; H02M7/797

JP4856750B2	2012-01-18
JP5522329B1	2014-06-18
JP2011230864A	2011-11-17
JP2014039364A	2014-02-27

Cleo International Law & Patent Office
Tamio Nishiwaki
Nishiwaki Reishi

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