Selection of Various Types of Inverter-(Part-2)

Comparison of Inverters: 

Comparison of Different Type of  Inverter

  Square Wave Stepped  Sine Wave Pure Sine Wave
Safety of Appliances Less Moderate High
Life of Appliances Less Moderate High
Battery Life Less Moderate High
Noise Level High Moderate Normal
Heat generation High Low Normal
Suitability for appliances No Not recommended for prolonged use Yes
       
       

How to Select Batteries for Inverter

  • Batter is the vital part of inverter. Performance and life of an inverter is greatly depends upon battery.
  • There are three types of batteries available in market.
  1. Flat Plate (Lead Acid ) Battery,
  2. Tubular Battery
  3. Maintenance Free Battery.
  • Without getting too much into details, all we can say is that Tubular Batteries are the best choice for inverters. They may cost slightly more than Flat Plate, but they will last longer.
  • Maintenance Free batteries may sound good, but they have lesser life (4-5 years as compared to 7-8 years of a tubular battery).
  • But the most important thing to run batteries for a longer time is to make sure that it is topped (filled) with distilled or RO water frequently and the fluid levels are maintained.

(1) Lead Acid Battery

  • Lead acid batteries known as “Automotive Battery”.
  • Lead-acid batteries are the oldest type of rechargeable battery. Most of the inverters batteries are lead acids battery of different types.
  • It is used for automotive purpose are termed as “High Cycle” lead acid batteries.
  • These batteries are designed to provide high current for a very short duration (To start the vehicles).

1.jpg

  • Automotive lead acid batteries are not designed to be regularly discharged by more than 25% of their rated capacity. Here the requirement of inverter is totally different.
  • Inverter requires “Deep Cycle” type batteries to provide continuous power which can be discharged at least 50% of their rated capacity.
  • Some good deep cycle batteries can be discharged over 80% of their capacity. Deep Cycle batteries have specially designed thick plates to withstand frequent charging and discharging.
  • Lead acid batteries require regular maintenance. You have to check the electrolyte level and require to be topped up on regular intervals. These batteries release poisonous gases during charging and discharging. If you don’t keep the batteries in a properly ventilated place, it can invite serious health problems.
  • We have to keep the terminals of normal lead acid batteries corrosion free by applying petroleum jelly or grease regularly.

Advantage:

  • This light weighed inverter battery.
  • Price is Economical and quite cost-effective
  • This is the most common type of inverter battery.
  • It is a rechargeable and generates a large amount of current.
  • Battery life is approximately 3-4 years.  

Disadvantage:

  • We need maintain it regularly, such checking the electrolyte level, topping up with distilled water etc.
  • Need well-ventilated place while installing a lead acid inverter battery.
  • Not Safer in use.

Application:

  • Suitable for small domestic Inverter.

  (2) Tubular Battery

  • This is the most popular and efficient among all types of inverter batteries.
  • Together with robust grid design, superb efficiency, long operational life and requirement of low maintenance tubular inverter battery is the most preferable choice of all.

1

  • This is the most popular segment of inverter batteries used in domestic and industrial applications.

Advantage:

  • Long life (5 Years)
  • High electrical efficiency.
  • Less Maintenance (Less number of water toppings)

Disadvantage:

  • Cost of tubular batteries can go up to double of a normal flat plate battery

Application:

  • Suitable for both domestic and industrial Inverter.

 (3) Maintenance Free Battery

  • As the name indicates there is no need of maintaining the batteries. No need of filling distilled water at regular intervals. This is possible because of a special type of electrolyte which need not be replenished.
  • Maintenance free batteries also called as sealed batteries and do not need any regular maintenance to function impeccably.
  • Apart from that other best feature is safety. Maintenance free batteries do not emit any poisonous or harmful gases.

1

Advantage:

  • It is costlier, But the money is worth to invest.
  • It is sealed lead acid batteries which do not require topping up or additional ventilation
  • They are more durable and safer than normal lead acid inverter battery.

Disadvantage:

  • Cost is very high as compared with normal lead acid batteries.
  • Life is comparatively low (3 To 4 Years)
  • Scrap value is not much more.

Application:

 Comparison of various types of Batteries 

Comparison of various types of Batteries
  Flat Plate Batteries Tubular Batteries Maintenance Free Batteries
  1 1 - Copy 1 - Copy (2)
Cost Low High High
Safety Low Low High
Efficiency Low High Medium
Maintenance High Medium Low
Water toppings High Medium Low
Releases harmful gases Yes Yes No
Ventilation requirement Yes Yes No
Scrap Value High High Low
Weight Low High Depend on the model.
Battery Life Span Low (  3 Yrs) High( 5 Yrs) Medium (3 to 4 Yrs)
Suitable For Low power cut areas as their designed cycle life is low.    

About Jignesh.Parmar
Jignesh Parmar has completed M.Tech (Power System Control), B.E(Electrical). He is member of Institution of Engineers (MIE) and CEng,India. Membership No:M-1473586.He has more than 16 years experience in Transmission -Distribution-Electrical Energy theft detection-Electrical Maintenance-Electrical Projects (Planning-Designing-Technical Review-coordination -Execution). He is Presently associate with one of the leading business group as a Deputy Manager at Ahmedabad,India. He has published numbers of Technical Articles in “Electrical Mirror”, “Electrical India”, “Lighting India”,”Smart Energy”, “Industrial Electrix”(Australian Power Publications) Magazines. He is Freelancer Programmer of Advance Excel and design useful Excel base Electrical Programs as per IS, NEC, IEC,IEEE codes. He is Technical Blogger and Familiar with English, Hindi, Gujarati, French languages. He wants to Share his experience & Knowledge and help technical enthusiasts to find suitable solutions and updating themselves on various Engineering Topics.

7 Responses to Selection of Various Types of Inverter-(Part-2)

  1. Muhammad Mohsin Ansari says:

    Hi,
    Jignesh.Parmar
    Very nice it’s very good work for you
    Thanking you

    Best Regards,
    Dr.M.Mohsin Ansari

  2. Paras Gupta says:

    Useful Information, Thanks for Sharing

  3. hai. i need distributor of my place . i am waiting for your reply . thanking you

    On Tue, Dec 25, 2018 at 11:03 PM Electrical Notes & Articles wrote:

    > [image: Boxbe] This message is eligible > for Automatic Cleanup! (comment-reply@wordpress.com) Add cleanup rule > > | More info > > Jignesh.Parmar posted: “Comparison of Inverters: Comparison of Different > Type of Inverter Square Wave Stepped Sine Wave Pure Sine Wave Safety of > Appliances Less Moderate High Life of Appliances Less Moderate High Battery > Life Less Moderate High Noise Lev” >

  4. K Patra says:

    Dear sir,
    Need your suggestion on following.

    Real time capacitor panel are installed at one of our project. 3 no. Of panels already commissioned and kept open since there is no load on transformer.
    But our client is operating up to 250 kvar on each rtpfc panel manually in order to maintain their unity power factor at HT site.

    As a result, some of the thyresistor got damaged.
    Can you suggest what went wrong and how it effects to a transformer,which is not on load.
    Regards,
    K L Patra

    Get Outlook for Android

    ________________________________

  5. Abhijit Rana says:

    Very Good information given. Thanks.

  6. shantilal parmar says:

    Dear Jignesh Sir,
    Can please clear my doubt on:
    1. Is it possible to parallel CAT 200 KW DG set with Cummins 200 KW DG set to a common synchro panel. If yes, than how & if not than why

  7. shantilal parmar says:

    In electrical project management, when we get approved SLD thereafter what are the technical parameters to be checked before execution start.

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