Three phase inverter power supply with balancing transformer
US4847745A · kind A · utility
72Cited by
22References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 16, 1988 |
| Grant date | Jul 11, 1989 |
| Priority date | — |
| Expiry date | Nov 16, 2008 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02M5/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A three phase inverter (40) is disclosed for use with loads (100) which are unbalanced. A transformer (80) having primary windings (82), (84) and (86) which are respectively connected to phase outputs (52, 54 and 56) has a secondary having individual windings (88, 90 and 92) connected in a delta configuration which minimizes the flow of unbalanced current in the unbalanced load. A second embodiment utilizes a transformer in an interconnected configuration. A neutral connecting the conductive switches to the load is unnecessary with the invention.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.