Modular multi-level adjustable supply with series connected active inputs
US6236580A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 7, 2000 |
| Grant date | May 22, 2001 |
| Priority date | — |
| Expiry date | Apr 7, 2020 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02M5/4585
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An adjustable frequency multiphase power supply providing low harmonics to the line and load. The power supply having a plurality of power cells in each phase output thereof, each cell having an input side, and an output side. The input side is capable of converting single-phase AC into DC and for converting DC into AC to said source. The output side is capable of converting DC into a controlled AC output and for converting AC from said load to feed said DC bus. The respective outputs and respective inputs of the cells are series connected. Each cell can have a single-phase transformer connected either to the input side or the output side. The output side of each cell can be controlled to limit the harmonic content of the output AC to the load, and the input side of each cell can be controllable to limit harmonic content of the AC power feed to the source. The input and/or output sides can be interdigitated to limit harmonic components to the source and/or to reduce the harmonic content of the AC supplied to the load.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.