Elevator system with regulated input power
US8333265B2 · kind B2 · utility
16Cited by
25References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 31, 2006 |
| Grant date | Dec 18, 2012 |
| Priority date | — |
| Expiry date | Jun 29, 2028 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02M5/12
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A device (22) manages power source variations in an elevator system. The device includes a transformer (60) having a primary (62) and a secondary (64). An input of the elevator system is connected to the secondary (64). Tap switches (66a, 66b, 66c, 66d) are connected to the transformer (60) such that each tap switch is connected to a tap point (68a, 68b, 68c, 68d) on the transformer (60). A controller (54) operates the tap switches (66a, 66b, 66c, 66d) based on a sensed power source output to provide power on the secondary (64) within a tolerance band of the elevator system.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.