Method for controlling the firing angle of an electric motor
US7166974B2 · kind B2 · utility
2Cited by
11References
4Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 20, 2005 |
| Grant date | Jan 23, 2007 |
| Priority date | — |
| Expiry date | Jul 20, 2025 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02P6/26
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Disclosed is a method for controlling the firing angle of a signle-phase AC powered electric motor which is triggered by means of at least one locking electronic switch, especially 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.