Voltage-sensed system and method for anti-islanding protection of grid-connected inverters
US8423312B2 · kind B2 · utility
21Cited by
18References
20Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 17, 2011 |
| Grant date | Apr 16, 2013 |
| Priority date | — |
| Expiry date | Mar 17, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02M1/32
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A method is provided for preventing islanding of a power source connected to an electric AC grid via an interface. The method senses an output voltage waveform of the interface, controls an output current waveform of the interface to track a reference current waveform having a mathematical relationship with the sensed output voltage waveform, and discontinues the output current waveform when the output voltage waveform is sensed to be outside a predetermined waveform range.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.