Method for controlling the firing angle of an electric motor
US7859211B2 · kind B2 · utility
0Cited by
31References
18Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 19, 2007 |
| Grant date | Dec 28, 2010 |
| Priority date | — |
| Expiry date | Jan 19, 2027 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02P6/26
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A method for controlling the firing angle of a single-phase AC powered electric motor is provided which is triggered by at least one locking electronic switch, such as a triac (T1 and T4) located between the distribution voltage (UV) and at least one motor winding (A, B). According to said method, intervals are defined within which the triacs (T2 to T4) are to be fired according to the curve of the distribution voltage (UV) and the voltage (UEMK) induced in the respective winding in order to allow the motor to start as quickly and smoothly as possible and run quietly and at high efficiency.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.