Power conversion apparatus
US8400792B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 22, 2008 |
| Grant date | Mar 19, 2013 |
| Priority date | — |
| Expiry date | May 2, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02J9/063
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A power conversion apparatus includes an inverter for converting DC power to AC power for supply to a load, a converter for converting AC power from an AC power supply to DC power for supply to the inverter, and a DC voltage converter for converting a voltage value of power stored in a storage battery and supplying DC power from the storage battery to the inverter when power supply by the AC power supply is abnormal. The converter includes a first three-level circuit which is a multi-level circuit. Similarly, the DC voltage converter includes a second three-level circuit. A control device controls the first and second multi-level circuits to suppress potential fluctuation at a neutral point between first and second capacitors.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.