How does a grid-tie inverter work?
Inverters take DC power and invert it to AC power so it can be fed into the electric utility company grid. The grid tie inverter (GTI) 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. A high-quality modern GTI has a fixed unity power factor, which means its output voltage and current are perfectly lined up, and its phase angle is within 1 degree of the AC power grid. The inverter has an on-board computer which senses the current AC grid waveform, and output a voltage to correspond with the grid. However, supplying reactive power to the grid might be necessary to keep the voltage in the local grid inside allowed limitations. Otherwise, in a grid segment with considerable power from renewable sources, voltage levels might rise too much at times of high production, i.e. around noon. Grid-tie inverters are also designed to quickly disconnect from the grid if the utility grid goes down. that ensures that in the event of a blackout, the grid tie inverter will shut down to prevent the energy it transfers from harming any line workers who are sent to fix the power grid.Properly configured, a grid tie inverter enables a home owner to use an alternative power generation system like solar or wind power without extensive rewiring and without batteries. If the alternative power being produced is insufficient, the deficit will be sourced from the electricity grid.If you want to make GTI see this Designing a Grid-Tie Inverter Circuit .
How does inverter battery work?
The answer in simple, it works on inverter battery. Inverter runs on a rechargeable battery, which is responsible for the long life, good performance of the inverter. The care of inverter battery is more important than inverter itself.If you will not keep your battery maintained, then it may cause several dangers such asAcid burns from lead acid battery,Short circuit in terminalsAnd fire due to battery gases.To keep the inverter battery working without causing any hazard to the user, you should follow these crucial maintenance tips for your inverter battery.
How exactly does an inverter work?
>How exactly does an inverter work? They take DC power like you would get from a battery pack and convert it to AC power like you would get from your power company. >I want to power 3 1300 KW air conditioners. I assume you mean 1.3 kW which would be the size of a typical window AC unit. 1300 kW would be enough to run around 1,000 window AC units! >Type of Inverter, Batteries, How to recharge batteries The big problem is batteries. To run three 1.3 kW units continuously for 4 hours you would need a battery bank of about 20 kWh hours. This would be about 470 kg (1,000 lbs) of lead - acid batteries. > How to recharge batteries You would need to recharge them from your electric outlets. The batteries, inverter, and charger need to be matched. >. I don't want my inverter to hook up to my apartment's outlets as I don't want other residents stealing my electricity. Not to mention killing utility workers and burning your building down! This is not a do it yourself proposition. We are not talking about some dinky system to run a couple of lights and a TV. Doing it wrong is enough to kill people and burn buildings down. Assuming you can find a landlord willing to let you have ~470 kg of lead acid batteries in your apartment, you need someone who knows what he is doing to put it together safely. If you can't find a local company that specializes in this, look for a company that does solar/wind generating systems. They would use the same types of parts. http://energy.sourceguides.com/businesse... (edit: 470 kg not 670 kg)
In basic terms how does an inverter work?
An inverter is basically a purpose-built amplifier. It takes a low-power, 60 cycle-per-second signal produced by timing circuit, and amplifies it in power tremendously. Until the signal has enough power that it can run an electric motor, for example. It does this by using heavy-duty, very-high current transistors. As you may know, transistors are electronic switches. They use a tiny amount of current to turn a much larger amount of current on or off. Also, transistors can control the amount of current that goes through, besides simply turning on and off. SO, an inverter takes a DC current, and electronically switches it on and off rapidly, 60 times per second. This is similar to a radio which takes a very weak radio signal, increases the power of the signal millions of times. Then it feeds that signal into the electromagnet inside a speaker which turns the oscillating electric current into mechanical sound vibrations in the air. Theres a bit more to it than that, of course. For example, most common sources of DC are the electric systems in cars or trucks. Those are usually only 12 or 24 volts. Whereas the AC current you get from a wall outlet in your home is around 120 volts. So before the inverter "chops" the DC up into ac current, it has some circuits that "multiply" the voltage by 5 or ten times.
How does MPPT work in a grid-tie inverter?
No. It actually regulates the solar power to charge batteries without over charging. The battery bank actually goes through an inverter to change 12 volts D.C. to 120 volts A.C. to run household needs. When there is no more sun, the batteries do all the work. When the sun comes back up, the batteries start charging back up again. You basically need 3 times the amount of power from the sun to charge your batteries AND power your house. This is perfect for an R.V. off the grid living. The Air conditioners draw so much power, you will have to run a generator or have several more solar panels, besides a whole roof full.