Circuit and method for operating a 3-phase motor with a uni-coil phase commutation scheme
US5557180A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jun 30, 1993 |
| Grant date | Sep 17, 1996 |
| Priority date | — |
| Expiry date | Jun 30, 2013 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02P6/21
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A circuit and method for operating a polyphase dc motor of the type having a plurality of driving coils connected together at a center tap current input node. Each driving coil have a current input node at an end opposite the center tap connection. A plurality of pairs of switches are arranged for connection in series across a power supply voltage. Each pair have a connection node between each switch connected to a respective one of the current input nodes. A sequencer individually operates the switches to cause a driving current to be passed between sequentially selected only single ones of the driving coils and the center tap current input node.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.