Slip energy recovery control system using hybrid inverter to improve quadrature current consumption
US4467259A · kind A · utility
5Cited by
3References
9Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 11, 1983 |
| Grant date | Aug 21, 1984 |
| Priority date | — |
| Expiry date | Apr 11, 2003 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02M1/0085
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A hybrid inverter for a slip energy recovery system for a wound rotor motor employs six thyristors (for 3 phase operation) or equivalent devices. Three of these are operated continuously in the inversion mode, the other three being operated from zero degrees to 180 degrees. The result is that a characteristic that is identical to a semi-converter is obtained except in the inversion mode. The hybrid inverter produces zero quadrature current at the full speed of the wound rotor motor and, as desired, zero volts at maximum current and maximum volts at zero current.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.