Dc/ac inverter apparatus for three-phase and single-phase motors
US6232742A · kind A · utility
60Cited by
4References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 2, 1994 |
| Grant date | May 15, 2001 |
| Priority date | — |
| Expiry date | Aug 2, 2014 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E10/56
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Electrical power apparatus is disclosed for selectively powering either a three-phase ac motor or a single-phase ac motor. A dc/ac inverter is configured to provide appropriately phased input signals to the three input terminals of whichever motor is being driven, with no substantial hardware reconfiguration being required. In addition, a special clamp circuit prevents an excessively high voltage from being applied to the inverter by a variable-voltage power source such as a photovoltaic array, whereby the inverter need not be sized to accommodate voltage levels substantially greater than its design voltage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.