CA2023283A1 - Emergency elevator power supply with component mode switching and frequency control - Google Patents

Emergency elevator power supply with component mode switching and frequency control

Info

Publication number
CA2023283A1
CA2023283A1 CA 2023283 CA2023283A CA2023283A1 CA 2023283 A1 CA2023283 A1 CA 2023283A1 CA 2023283 CA2023283 CA 2023283 CA 2023283 A CA2023283 A CA 2023283A CA 2023283 A1 CA2023283 A1 CA 2023283A1
Authority
CA
Canada
Prior art keywords
power
power supply
inverter
mode switching
frequency control
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CA 2023283
Other languages
French (fr)
Other versions
CA2023283C (en
Inventor
Masao Iwasa
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Otis Elevator Co
Original Assignee
Masao Iwasa
Otis Elevator Company
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Masao Iwasa, Otis Elevator Company filed Critical Masao Iwasa
Publication of CA2023283A1 publication Critical patent/CA2023283A1/en
Application granted granted Critical
Publication of CA2023283C publication Critical patent/CA2023283C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Abstract

A simplified elevator power system using an AC-DC
converter, both to convert AC to DC during normal operation and to convert stored DC power to AC during power failures.
A power source monitoring relay monitors AC power coming from a utility, and upon power failure, switches a battery from a charging mode to a power source mode wherein DC power is supplied, not only to an inverter for driving a motor, but also to a converter hooked up to run as an inverter during such power failure in order to provide stepped-up AC
voltage to elevator control devices. In this way, the prior art addition of an extra inverter is avoided.
CA 2023283 1989-08-16 1990-08-15 Emergency elevator power supply with component mode switching and frequency control Expired - Fee Related CA2023283C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP1211215A JPH0379573A (en) 1989-08-16 1989-08-16 Elevator electric source device
JP1-211215 1989-08-16

Publications (2)

Publication Number Publication Date
CA2023283A1 true CA2023283A1 (en) 1991-02-17
CA2023283C CA2023283C (en) 1995-07-04

Family

ID=16602211

Family Applications (1)

Application Number Title Priority Date Filing Date
CA 2023283 Expired - Fee Related CA2023283C (en) 1989-08-16 1990-08-15 Emergency elevator power supply with component mode switching and frequency control

Country Status (2)

Country Link
JP (1) JPH0379573A (en)
CA (1) CA2023283C (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110621603B (en) * 2017-05-18 2021-09-14 三菱电机株式会社 Control device for elevator
CN115367575A (en) * 2022-08-03 2022-11-22 上海新时达电气股份有限公司 Elevator safety control device and control method thereof

Also Published As

Publication number Publication date
JPH0379573A (en) 1991-04-04
CA2023283C (en) 1995-07-04

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