On 4/12/2011 1:47 AM, David Nebenzahl wrote:
On 4/11/2011 11:17 PM harry spake thus:

On Apr 11, 8:01 pm, David Nebenzahl wrote:

On 4/11/2011 10:32 AM harry spake thus:

The modern grid tie/connected "transformerless" inverter
manipulates the DC output from the panels so that they run on
their "sweet spot" ie the most efficient voltage and current. It
self connects/ disconnects to the mains as and when there is
sufficient light operate the panels. I t uses the mains sine wave
to generate it's own sine wave on the AC side. The current
delivered is indeed dependant on the output voltage it dleivers
to "push2 that current back into the mains.

Bull****.

Bit on the topic here.
http://en.wikipedia.org/wiki/Kirchhoff%27s_circuit_laws
http://en.wikipedia.org/wiki/Grid_tie_inverter

Apparently you didn't even *read* that second article. It says:

The grid tie inverter must synchronize its frequency with that of
the grid (e.g. 50 or 60 Hz) using a local oscillator and limit the
voltage to no higher than the grid voltage.

Re-read that last phrase: "limit the voltage to no higher than the
grid voltage".

You don't "push" electricity from your solar installation into the
grid by raising the voltage, as someone here postulated. It just
don't work that way.

Yes it does. Electrical current flows from a point of higher
potential to a lower point. The very first thing you learn. Ohm's Law.

How many things are wrong with what you wrote? let's see:

That's not Ohm's Law, not by a long shot. Do you even know what that is?

Yes, electricy flows from a point of higher potential (voltage) to a
lower point. But you're confusing voltage and current here, a common
rookie mistake.


Please enlighten us oh great one. ^_^

TDD