Bipolar DC to AC power converter with DC ground fault interrupt
US8467160B2 · kind B2 · utility
6Cited by
5References
30Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 6, 2007 |
| Grant date | Jun 18, 2013 |
| Priority date | — |
| Expiry date | Feb 16, 2029 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E10/56
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An electrical power converter for converting power from a bipolar DC source to supply an AC load is disclosed. For one such embodiment the bipolar DC source is a photovoltaic array and the AC power is sourced into an electric power grid. The bipolar photovoltaic array has positive and negative voltage potentials with respect to earth ground. The converter is a utility interactive inverter which does not require an isolation transformer at the electric power grid interface. Embodiments of the invention include methods of detecting and interrupting DC ground faults in the photovoltaic array.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.