Inverting apparatus and photovoltaic power system using the same
US9373996B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 26, 2015 |
| Grant date | Jun 21, 2016 |
| Priority date | — |
| Expiry date | Feb 26, 2035 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E10/56
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An inverting apparatus and a photovoltaic power system using the same are provided. The inverting apparatus includes an inverting circuit, a control circuit, and a voltage regulator-based ground detection circuit. The control circuit controls the power conversion of the inverting circuit. The voltage regulator-based ground detection circuit samples an input voltage of the DC input power, and performs voltage regulation and voltage division on the input voltage to generate a ground indication voltage. The electric potential of the output terminal of the voltage regulator is built based on a photovoltaic ground terminal of a photovoltaic module. The ground indication voltage is the voltage difference between an output terminal of the voltage regulator and a device ground terminal of the inverting apparatus. The control circuit determines whether a ground fault occurs to the photovoltaic module and enables a ground protection mechanism to control the inverting circuit when the ground fault occurs.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.