METHOD FOR DETERMINING A CHARACTERISTIC CURVE OF A PHOTOVOLTAIC (PV) STRING, DC/DC CONVERTER, AND PHOTOVOLTAIC SYSTEM SUITABLE FOR CARRYING OUT THE METHOD
Number of patents in Portfolio can not be more than 2000
United States of America
Stats
-
N/A
Issued Date -
Apr 7, 2022
app pub date -
Dec 17, 2021
filing date -
Dec 17, 2021
priority date (Note) -
Published
status (Latency Note)
Importance
Abstract
The disclosure relates to a method for determining a characteristic curve for a photovoltaic (PV) string of a photovoltaic system having an inverter which is connected to the photovoltaic string and to a power supply network. The photovoltaic string includes a series connection of a plurality of photovoltaic modules, in which series connection at least one of the photovoltaic modules is integrated into the series connection of the photovoltaic modules via a DC/DC converter. The at least one DC/DC converter operates the photovoltaic module assigned thereto in a first operating mode M1 at a maximum power point by varying, over time, a conversion ratio of output voltage (UOut) to input voltage (UIn), and operates the photovoltaic module in a second operating mode M2 with a conversion ratio of output voltage (UOut) to input voltage (UIn) that is constant over time. The method includes operating the at least one DC/DC converter in the second operating mode M2 in response to a current signature for the current (IStr) through the photovoltaic string, determining the characteristic curve by varying the current IStr or the voltage UStr of the photovoltaic string by the inverter, and detecting values assigned to one another for current IStr and voltage UStr of the photovoltaic string in the second operating mode M2 of the DC/DC converter.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully