Regenerative variable frequency drive
US8941340B2 · kind B2 · utility
3Cited by
19References
22Claims
0Family size
Inventors
Key dates
| Filing date | Nov 16, 2012 |
| Grant date | Jan 27, 2015 |
| Priority date | — |
| Expiry date | Apr 27, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02P23/26
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A regenerative variable frequency drive includes an active converter connected to an inverter. The converter has a filter capacitor, an inductor, two half bridges, bus bars that connect to the inverter and bus capacitors. The converter converts single phase AC power to DC power and DC power to single phase AC power, boosts the AC power, reduces input line harmonics, maintains input current in phase with utility voltage in order to achieve near unity power factor, and maintains constant DC voltage between the bus bars.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.