You are here
Home > Renewable energy > Important Facts About DC to AC Inverter

Important Facts About DC to AC Inverter


“Did you know The technology used in an inverter also affect its efficiency”

What are DC to AC inverters?


A DC to AC inverter which is normally just called an ‘inverter’ takes the direct current (DC) power produced by a solar panel or wind turbine array and converts it to alternating current (AC) power, which can be supplied around the building to power appliances or fed back into the grid to offset electricity consumption.

Related post: How does a solar panel work?

What are the types of inverters available today?

They are two main variation points to this electrical and electronics device: Either they are constructed with a transformer or not, and they can either produce pure sine wave or modified sine wave.

The Difference between Transformer and transformer-less inverter

A transformer is an electromechanical device inside an inverter which steps up the voltage to 240V or 120V depending on the standard voltage used in your country to power appliances at home.

Though Most inverters sold in some countries today don’t have transformers, and it is observed that some that have no transformers are becoming increasingly popular for a few reasons. the ones with transformers are generally bulky and heavier, and are normally slightly less efficient than the more modern transformerless types that are available in the market today.

Inverter with transformer can also make a fairly loud humming noise, which can be irritating if the device was installed near a living area, but in the case of inverters with no transformer this cannot be seen because it uses electronic circuit in boasting it voltage thus reducing the amount of heat and ˜hum’ generated by the unit, and they are also very much lighter, more compact, and affordable. Though this device can either have a transformer or not but any of the two can be designed to either generate pure sine wave or modified sine wave.


What is the difference between Pure sine wave and modified sine wave inverters?

difference between pure sine wave and modified sine wave


The difference between a pure sine wave inverter and one which generates a modified sine wave is the type of wave the output current possesses. A ‘pure’ sine wave is simply a smooth wave, whereas a modified sine wave is somewhat like a square wave as shown above.

A pure sine wave inverter will generate almost similar wave produced by the mains power grid from the utility company, which will give a much better efficient energy conversion – a little like the difference between gazing at an extremely high-resolution picture and an extremely low one.


How do the inverters work?

The power that is supplied by the utility company comes in an AC form, which means that the current has an alternating wave coming back and forth, and why the supply this is that, if for any reason you get an electric shock from any of the mains, the AC current is considered to be slightly less likely to kill than the DC current which has a direct signal. So all household appliances are designed to be operated with an AC current, and this is where this device comes in.

In simple terms, the DC electricity generated by a solar or turbine array has no wave to it; it is just a direct flow of current. For it to be utilized, it needs to be the same as the waveform of the AC power coming in from the utility company (a sine wave).

So the electrical and electronic device is designed to use either transistors or an oscillator to switch the voltage back and forth. In some countries the supply current switches at 50Hz, and while other switches at 60Hz, this means the current is switched 50 times a second or 60 times a second.


The better the quality of an inverter, the more closely the waveform is a pure sine wave, and the more efficiently it will regulate power. Lesser quality of this device have the sine wave in steps rather than straight lines (i.e. with a modified sine wave, as mentioned earlier) which can be a bit okay for appliances which do not use much power, but can be a problem for more heavy-duty appliances, especially for anything that has a motor


How are inverters installed?

During installation, it can be placed wherever it is convenient for the householder, though places like the garage, carport, under the staircase, or a special room or corner in the house set aside for power equipment to be installed. The positive (+) and negative (-) of the device is then connected up to both the array, and either the mains power grid or a battery storage system.

If the connection is to be done to the mains that is, if you are staying in countries where solar energy utility grid is supply around the city, you will need a licensed electrician to handle the job. Even if you’re only connecting your inverter to a battery bank, it’s a good idea to contact a licensed installer or electrician to make sure everything works fine.

Related posted: criteria to choose the best solar battery for a solar electric energy system

What to consider when selecting inverter?

There are a few things to look out for when choosing an inverter:

  1. Standard; If you are staying in a country where there is a utility company supply energy from the solar system grid, your chosen device should meet the company standard.
  2. Capacity; The one selected should be able to carry the total maximum load designed to be supplied by the inverter and it should be able to cope with maximum power output from the solar panel array if it is connected directly from the array.
  3. Efficiency; The closer the selected device is to a pure sine wave, the more power you will get from it and the more efficient the inverter
  4. Warranty. Look out for the warranty of the inverter, a minimum of 5 years is at least good which best manufacturers will even offer a longer warranty.




91 thoughts on “Important Facts About DC to AC Inverter

  1. When I originally commented I clicked the “Notify me when new comments are added” checkbox and now each time a comment is added I get three e-mails with the same comment. Is there any way you can remove people from that service? Appreciate it!

  2. Pretty section of content. I just stumbled upon your weblog and in accession capital to assert that I get in fact enjoyed account your blog posts.
    Anyway I will be subscribing to your feeds and even I achievement you access consistently quickly.

  3. Write more, thats all I have to say. Literally, it seems as though you relied on the video to make
    your point. You obviously know what youre talking about, why
    waste your intelligence on just posting videos to your
    site when you could be giving us something enlightening to read?

  4. Great blog here! Also your web site lots up very fast!
    What host are you using? Can I get your affiliate hyperlink for your host?
    I want my site loaded up as quickly as yours lol

  5. Hello, i read your blog from time to time and i own a similar
    one and i was just wondering if you get a lot of spam feedback?
    If so how do you stop it, any plugin or anything you
    can advise? I get so much lately it’s driving me mad so any help is very
    much appreciated.

  6. Thanks a lot for sharing this with all people you actually recognize what you are talking approximately!
    Bookmarked. Kindly also seek advice from my site =).
    We will have a link change agreement between us

  7. Hello there! This blog post could not be written any better!
    Looking through this post reminds me of my previous roommate!
    He always kept talking about this. I will send this article to
    him. Fairly certain he’s going to have a good read.
    Thank you for sharing!

  8. It’s actually very difficult in this full of activity life to listen news on TV, so I just use web for that reason, and take the hottest

  9. Its like you read my mind! You seem to know so much about this, like you
    wrote the book in it or something. I think that you could do with
    some pics to drive the message home a bit, but instead of that, this is wonderful blog.
    A fantastic read. I’ll certainly be back.

  10. Just desire to say your article is as amazing. The clearness in your
    post is just spectacular and i can assume you are an expert on this subject.

    Well with your permission let me to grab your RSS feed to keep updated with forthcoming post.

    Thanks a million and please keep up the rewarding work.

  11. It’s a shame you don’t have a donate button! I’d
    most certainly donate to this fantastic blog! I suppose for now i’ll settle
    for book-marking and adding your RSS feed to my Google account.
    I look forward to new updates and will share this
    blog with my Facebook group. Talk soon!

  12. Wonderful beat ! I would like to apprentice while you amend your web
    site, how could i subscribe for a blog site? The account
    helped me a appropriate deal. I have been a little bit acquainted of this your
    broadcast offered vibrant clear concept

  13. Hi, i believe that i saw you visited my site
    so i came to return the prefer?.I’m trying to to
    find things to improve my web site!I guess its good enough to use a
    few of your ideas!!

  14. We stumbled over here from a different website and thought I should check things out.
    I like what I see so now i’m following you. Look forward to
    looking into your web page yet again.

  15. Sweet blog! I found it while browsing on Yahoo News.

    Do you have any suggestions on how to get listed in Yahoo News?
    I’ve been trying for a while but I never seem
    to get there! Thank you

  16. I’ve been browsing on-line more than 3 hours nowadays, but I by no means found
    any attention-grabbing article like yours. It is pretty worth enough for me.
    Personally, if all website owners and bloggers made excellent content material as you probably
    did, the net might be much more helpful than ever before.

  17. I know this if off topic but I’m looking into starting my own blog and was wondering what all is needed to get setup?
    I’m assuming having a blog like yours would cost a pretty penny?

    I’m not very web savvy so I’m not 100% positive.
    Any suggestions or advice would be greatly appreciated.

  18. Hey there! Someone in my Myspace group shared this site with us
    so I came to check it out. I’m definitely loving the information. I’m book-marking and will be tweeting this to
    my followers! Excellent blog and amazing style and design.

  19. Right here is the right web site for anybody who
    wants to find out about this topic. You realize a whole lot its almost hard to
    argue with you (not that I really will need to…HaHa). You
    definitely put a brand new spin on a subject that has been discussed for a long time.
    Great stuff, just wonderful!

  20. hi!,I love your writing so a lot! proportion we be in contact more approximately your post on AOL?
    I require a specialist on this space to solve my problem.
    May be that’s you! Taking a look forward to see you.

  21. Excellent post. I was checking constantly this blog and I’m impressed!
    Extremely helpful information specifically the last part :
    ) I care for such information a lot. I was looking for this certain info for a very long time.
    Thank you and best of luck.

  22. I know this if off topic but I’m looking into starting my own blog and was wondering what all is
    required to get set up? I’m assuming having a blog like yours would cost a pretty penny?
    I’m not very web savvy so I’m not 100% certain. Any tips
    or advice would be greatly appreciated. Many thanks

  23. Great site you have here but I was wondering
    if you knew of any message boards that cover the same topics discussed here?
    I’d really like to be a part of online community where I can get
    opinions from other experienced people that share the same
    interest. If you have any suggestions, please let
    me know. Kudos!

  24. Hey there I am so excited I found your web site, I really
    found you by accident, while I was researching on Aol for something else, Anyhow I am here now and would just like to say cheers for a tremendous post and a
    all round interesting blog (I also love the theme/design),
    I don’t have time to browse it all at the moment but I
    have bookmarked it and also added in your RSS feeds, so when I have time I will
    be back to read a lot more, Please do keep up the
    great job.

  25. A person necessarily assist to make severely posts I might state.
    That is the first time I frequented your website page and up to now?
    I amazed with the analysis you made to make this actual post extraordinary.

    Excellent job!

  26. Unquestionably believe that which you stated. Your
    favorite reason seemed to be on the net the easiest thing to be aware of.
    I say to you, I definitely get irked while people think about worries that they just
    do not know about. You managed to hit the nail upon the
    top and also defined out the whole thing without having side effect , people can take a signal.
    Will likely be back to get more. Thanks

Leave a Reply

Enable Notifications    OK No thanks