Inverter control apparatus
US5614803A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 22, 1995 |
| Grant date | Mar 25, 1997 |
| Priority date | — |
| Expiry date | Jun 22, 2015 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02P23/28
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
In order to reduce distortion of a real-current wave form and to suppress substantial transient fluctuation of the current and torque during changeover from a regeneration running condition to the power running condition of a three-phase induction motor, changeover from the three-phase-modulation control to the two-phase-modulation control is carried at the same time the power running condition of the motor is changed to the regeneration running condition according to the motor-state-quantum such as a detected slip ratio, detected torque, detected current or the like. Thus, distortion of the motor-current wave form is reduced and significant fluctuation of the motor-current and torque during the changeover is reduced.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.