Grid Tie Inverter Page
How does a grid-tie inverter input directly onto the grid ?
Is it actually the case that the amplitude of the sine wave is greater than that of the grid ?
Could it be that there is an artificial variation (somewhat in advance of the actual grid ) ?
Or a blend of each of those ?
The voltage will be merely set to marginally greater as well as lags.
It lags because electronics in the inverter make it so. They first sense the grid voltage, and generate a synchronized sine wave. They also periodically sense whether the grid voltage is available independantly of the inverter, and shut the inverter down within 1 second if the grid is down. It is slightly higher voltage and slightly out of phase in order to transmit power to the grid. These differences are very small.
Supplying to the Grid?
Could folks aim me in the path in order to uncover when its a good idea putting together a photovoltaic cell system adequate to supply enough electricity for my residence and perhaps sell off whatever surplus to my utility?
Consider first your location's sun exposure ?The greaterthe amount of sun, the speedier is your investment recovery. Reducing your electircity consumption with thermal home heating, for air and water. Wide open curtains on a southerly looking window, and your home warms up.
Further reduction in electicity usage can be had with something like a three hundred gallon solar energy water heating unit , which runs into up-front expenses for pumps, tanks, collectors.
Then to offset your electric bill ? At this point we are speaking of significant investment, with 9 year paybacks. $30,000 to get photovoltaic electric panels, grid tie inverter, as well as $5 monthly fee for utility connection. You should look at, common electric bill for a residence, $300a month, paid something like $30,000 for system, that yields about 100 months to break even. Except if you are living in an region in which electric power is truly inexpensive. In that case it could take thirty years.
Query regarding sizing for Grid Tie Inverter
We would like to set up a grid tie inverter in our dwelling, the electric power rating of the grid tie inverter in watts is the maximum power I can run in my house, correct? Or is it that remaining linked to the grid we will be able of running greater loads compared to what the inverter can handle ?
To clarify: With a grid tie inverter rated 2000 Watts can we have three thousand watts load ( for a small time period ) being that we're connected to the grid?
Thus our concern: is the electrical power rating associated with the inverter the highest load we will be able to have in the house or is that the maximum load that the inverter can create from the PV array ?
No the capacity of the grid tie inverter does't have anyting to do with how much of a load size you can have in your home. Your hot water heater, electric clothes dryer, air conditioner and stove all consume greater than 2000 watts each.
When your current requirement is higher than what your inverter is supplying, you draw from the utility. Any time your production is greater than your requirement, the power goes out in to the grid for someone else to use.