CA2023283A1 - Emergency elevator power supply with component mode switching and frequency control - Google Patents
Emergency elevator power supply with component mode switching and frequency controlInfo
- 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
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.
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.
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)
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 |
-
1989
- 1989-08-16 JP JP1211215A patent/JPH0379573A/en active Pending
-
1990
- 1990-08-15 CA CA 2023283 patent/CA2023283C/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
JPH0379573A (en) | 1991-04-04 |
CA2023283C (en) | 1995-07-04 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
EEER | Examination request | ||
MKLA | Lapsed |