Induction motor control system
US4950970A · kind A · utility
14Cited by
7References
22Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 14, 1986 |
| Grant date | Aug 21, 1990 |
| Priority date | — |
| Expiry date | Mar 14, 2006 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02P23/26
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An improved induction motor control system. Single-phase and three-phase AC induction motors are controlled in accordance with the equation y=m=x+b, where y is the phase angle, m is the slop, x is the firing delay and b is the offset. Subsequently, the firing delay is increased by predetermined amounts, the behavior of the phase angle is evaluated for several cycles, and the motor is controlled based on the results of the evaluation, thereby minimizing energy consumption.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.