Apparatus for starting and running a plurality of three-phase motors from a single-phase power source
US4745348A · kind A · utility
7Cited by
2References
5Claims
0Family size
Inventor
Key dates
| Filing date | Sep 22, 1986 |
| Grant date | May 17, 1988 |
| Priority date | — |
| Expiry date | Sep 22, 2006 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02P1/54
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An apparatus for starting and running a plurality of three-phase motors from a single-phase power source is described. Two of the main coils of a three-phase motor are used to run the motor as a single-phase induction motor. The third coil of a three-phase motor is used as a starting coil and is selectively powered through a switch and a capacitor. The capacitor provides the necessary difference in the phase angle of the current in the starting coil and the main coils to provide starting torque for the operation of the motor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.