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Personne àcontacter Mr. Anthony
41 Bayberry Drive,Easthampton,MA 01027, Florence, MA
Grid Tied Solar Inverters. A grid-tie inverter is an electrical
device that allows solar power users to complement their grid power
with solar power. It works by regulating the amount of voltage and
current that is received from the direct current solar panels (or
other D.C. energy source) and converting this into alternating
current. The main difference between an inverter and a grid-tie
inverter is that the latter also ensures that the power supplied
will be in phase with the grid power. This allows individuals with
surplus power (wind, solar, etc) to sell the power back to the
utility. This is sometimes called "spinning the meter backwards" as
that is what literally happens.
How is a grid tie inverter different from other inverters? Firstly
the *0Hz has to be matched in phase to the grid. This means the
local oscillator has to be in sync with the grid. Secondly the
voltage of the inverter output needs to be variable to allow it to
be slightly higher than the grid voltage to enabling current to
flow out to the grid. This is done by sensing current flow and
raising the voltage on the output (or duty cycle of the transformer
) until the current flow results in the resulting output power
matching the power from the DC supply.
| Pays: | USA |
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