Apparatus for controlling a PWM inverter-permanent magnet synchronous motor drive
US4361791A · kind A · utility
34Cited by
3References
6Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 12, 1981 |
| Grant date | Nov 30, 1982 |
| Priority date | — |
| Expiry date | May 12, 2001 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02P25/024
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Apparatus for controlling a permanent magnet AC synchronous motor supplied by a forced commutated inverter that does not use a mechanical shaft position sensor. A control loop regulates an inverter frequency and maintains inverter synchronism with the motor using electrical angle feedback signals developed from measured flux signals that have been phase shifted.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.