The Power Inverter is the important device of your Solar Energy System. It converts the low voltage DC of battery to the volt AC for most home appliances.
To choose Best Power Inverter, you don’t need to know and understand how it works, but you should understand some basic functions because it help you take the best- right one for your system. In this article which gives some of the useful information for you.
Read more: Choose Best Battery Charge Controller for your Solar Panels System
What Inverter type is Best for you?
There are many types of solar inverters, each of which have different functions and are used for different type of solar energy system, but all of these inverter converts DC into AC volt.
Depending on application, we have:
Stand -Alone Inverters
With a stand-alone inverter system, you will be fine by power outages because your power system completely independent from the power grid. You will be free to use your electricity system whenever you want.
You should buy a quality stand-alone inverter with built-in ability to surge – surge compliant inverter, because many of heavy equipment as: washers, dryers, and dishwashers… need large power (power surge) when first being startup.
Synchronous Solar Panel Inverters or Grid tie inverters
Synchronous Solar Panel Inverters are used when you want to be connected to the grid. The solar power via inverter may be used by your house loads or/and send it back to the utility grid (synchronous with utility grid company) and you get money or reduce your electricity bills every month.
This type of inverter is best if you do not want to buy a battery to store the solar energy so you won’t need to maintain and change batteries.
When purchase a Synchronous Solar Panel Inverters, you have to check for make sure that the inverter has anti-islanding protection function which forces inverter to shut down in case of power outages.
Without anti-islanding protection, your solar system would continue to generate electricity. It is extremely dangerous for utility workers who are trying to repair the gird during a power outage.
Multi-function inverters (hybrid-power inverters, backup battery inverters)
A multi-function inverter is combined of two types, Stand -Alone Inverters and Synchronous Solar Panel Inverters. It allows you to produce, store, and consume power that your solar system produces and have profit when you sold it out.
Multi-function inverters is obviously expensive than the other two types because it get all benefits of the others.
Depending on the technology, we have:
Modified Sine Wave Inverters
Modified sine wave or step wave inverters produce a stepped waveform, which isn’t really a sine wave at all, it is only approximate a pure sine waveform and they are less expensive than pure sine waveform inverters too.
It works well in most applications and even most computers work well. However there are some exceptions, some appliances that use inductive loads: motor speed controls, water pump… may not work right with a Modified Sine Wave inverter because to generate an irritating buzz.
They are not quite as good as true sine wave inverters, but this is probably the most popular and economical type of power inverter.
True Sine Wave Inverters
Best pure sine wave inverter is used to operate sensitive electronic devices that need high quality waveform with little harmonic distortion.
In addition, they have high surge capacity which means they can to exceed their rated wattage for a short time.
This is the better choice if want optimal performance from electric motors, such as electric water pump, motor…
Advantages of best pure sine wave inverters:
- Output voltage wave form is pure sine wave with very low harmonic distortion and clean power like utility-supplied electricity.
- Inductive loads like microwave ovens and motors run faster, quieter and cooler.
- Reduces audible and electrical noise in fans, fluorescent lights, audio amplifiers, TV, Game consoles, Fax, and answering machines.
- Prevents crashes in computers, weird print out, and glitches and noise in monitors.
When choose best power inverter to change the DC into alternating current (AC) for your home, it is important to select an inverter with the following characteristics:
- High efficiency
- Low standby losses
- High surge capacity (peak power)
- Low harmonic distortion