Solar

Solar energy is free, but harnessing them efficiently can be a challenge, and could take some serious effort. And this may not be possible unless you know all the little secrets that might be required for converting solar energy into lifetime home electricity.

Just imagine if you had a full access to the knowledge regarding how to install and run solar panels at will, using battery charger controllers, MPPT units and inverters and you did not had to depend on confusing and costly external inputs, rather had the ability to optimize a solar electricity system by applying your own knowledge, …..sounds too good to be true! Right?

Well now this may be well within your reach, and it’s your time to fulfill the above mentioned wish. What you need to do is put a little effort and time in reading the many exclusively researched articles below, related to solar panel electricity management through controllers and inverters, that would help you to master the subject without spending on long and expensive courses.

Just sit, read, understand, learn, by going through the various related articles… and more favorably, if required get your curiosities cleared by discussing them with me through comments.

 Wish you all the best!!

48V 3KW Electric Vehicle Circuit


48V 3KW Electric Vehicle Circuit

The post explains a few important parameters related to the making of  a 48V……
3 phase Solar Submersible Pump Inverter Circuit


3 phase Solar Submersible Pump Inverter Circuit

The post explains a simple  3 phase solar submersible pump inverter circuit……
Remote Controlled Solar Lamp Intensity Controller Circuit


Remote Controlled Solar Lamp Intensity Controller Circuit

The post details a simple remote controlled solar lamp intensity controller circuit……
MPPT Circuit using LM317 IC


MPPT Circuit using LM317 IC

To make this simple MPPT circuit we first modify a standard LM317 power supply……
Solar Pocket LED Light Circuit


Solar Pocket LED Light Circuit

The post explains a simple low cost solar pocket LED light circuit which could……
Designing a Solar Inverter - Tutorial


Designing a Solar Inverter – Tutorial

Designing a solar inverter circuit essentially requires two parameters to be configured……
Connecting MPPT with Solar Inverter


Connecting MPPT with Solar Inverter

The small discussion presented in this article explains whether or not it is advisable……
Solar Charger Circuit using Transistors with Automatic Cut-off


Solar Charger Circuit using Transistors with Automatic Cut-off

The post details a simple solar charger circuit with automatic cut-off using transistors……
Solar Inverter Circuit for 1.5 Ton AC


Solar Inverter Circuit for 1.5 Ton AC

Here we learn how to build a solar inverter circuit for a 1.5 ton air conditioner……
Greywater Purifier Desalination System


Greywater Purifier Desalination System

The post explains a simple grey water purifier, desalination design arrangement……
Solar E Rickshaw Circuit


Solar E Rickshaw Circuit

The post explains a simple solar electric rickshaw or E rickshaw circuit which……
MPPT Circuit using PIC16F88 - Code and HEX


MPPT Circuit using PIC16F88 – Code and HEX

The earlier article comprehensively described the circuit details of an MPPT using……
MPPT Circuit using PIC16F88 with 3-Level Charging


MPPT Circuit using PIC16F88 with 3-Level Charging

An MPPT as we all know refers to maximum power point tracking which is typically……
Battery Charger Circuit with 4 LED Indicator


Battery Charger Circuit with 4 LED Indicator

A universal current controlled automatic battery charger circuit with 4 LED indicators……
Automatic Solar Light Circuit using a Relay Changeover


Automatic Solar Light Circuit using a Relay Changeover

This automatic solar light circuit using relay changeover is designed for charging……
Synchronous Switch-Mode MPPT Battery Charge Controller Circuit


Synchronous Switch-Mode MPPT Battery Charge Controller Circuit

The device bq24650 includes an advanced built-in MPPT Synchronous Switch-Mode Battery……
Simple Solar MPPT Circuit - Part 2


Simple Solar MPPT Circuit – Part 2

This post is the concluding part of one of the earlier MPPT related posts, and……
Make Free Drinking Water from Sea Water


Make Free Drinking Water from Sea Water

The post explains a cheap yet effective method of desalinating large quantities……
Solar, Wind, 2-Input Hybrid Battery Charger Circuit


Solar, Wind, 2-Input Hybrid Battery Charger Circuit

The article explains a dual input hybrid solar wind battery charger circuit using……
Solar Drip Irrigation System for Indoor Gardens


Solar Drip Irrigation System for Indoor Gardens

The post explains a water level controller circuit which can be used for implementing……

48 Replies to “Solar”

  1. Anonymous

    hi there Swagatam i have a inverter ups battery charger combo called a bps- 3624 that i want to run only as a inverter with (10x12v 105a/h batteries) conected in 24 v witch is charged with (4x100watt 12V panels) connected 24V with a 30 amp controler but as i was connecting my change over panel i made a short and smoke came out of the inverter, i openend it up and found the inverters on heat sink burned (irf3205)they are marked from Q1 to Q16 and there is also resistors but they are badly burned and i can not see their lines can u please help me

    1. Swagatam Post author

      where are these resistors connected?….if these are connected with source pins then you may replace them with 0.1ohms, 10 watt

      if these are gate resistors then replace them with 100 ohms 1/4 watts resistors.

  2. Anonymous

    sir i want to make a solar hybrid invertor but i dont know how to use a current comparator circuit

    1. Swagatam Post author

      I watched the video, it looks interesting but why did the uploader disable comments…because he knows intelligent viewers will pick out the hidden trick and blow it off….so for me it's as usual a fake video.

      However if you could actually try it and give us the feedback, would appreciate it a lot.

  3. Colleen

    Do you have any inverter circuit that applies to these solar panel specs:

    Nominal Power12 (Pnom) = 435 W
    Rated Voltage (Vmpp) = 72.9 V
    Rated Current (Impp) = 5.97 A
    Open-Circuit Voltage (Voc) = 85.6 V
    Short-Circuit Current (Isc) = 6.43 A

  4. prashant India

    Dear sir
    i need to manufacturing solar street lights. so i wants to get full circuit of solar charge controller cum led driver for following specification. panel 75w max. , battery 75w max, LED 9watt/12watt .( output 10v/1050ma and 10v/1400ma)
    (1) load (LED) disconnected when battery discharged less than :10.5v
    (2) Panel input power will be cut off when battery reach at 13.5v
    (3) Panel input will be reconnect when battery reach at 12.5v
    (4) Load on when solar panel input voltage less than 1v
    (5) Load off when solar panel input voltage more than 1v
    if possible i want to make this circuit without using microcontroller and variable resistor. i am ready to pay your fee for this project. you can send me mail on :info@roindia.net
    regards,
    Prashant patel

  5. sarath

    Hi Swagatam,

    Could you please tell for our solar projects which panel would be better, a monocrystalline or a polycrystalline solar panels ?

    thanks and regards
    S Sarath

    1. sarath

      Hi Swagatam,

      What are the advantages of polycrystalline solar pannels?
      Is it only the cost, as i have read that mono crystalline pannels are costly but are more efficient and thus smaller (for same wattage), have more life then polycrystalline pannels?
      But I don't have much practical idea regarding them.
      Please advise.

      thanks and regards
      S Sarath

    2. Swagatam Post author

      Hi Sarath,

      I too don't have much practical idea about solar panels, I would suggest you to Google this "monocrystalline v/s polycrystalline solar panels", you will find plenty of info regarding them

  6. Himanshu Grover

    hello sir,

    I want to make a solar inverter phone charger for science project, please help me regarding this.
    Also tell me the type of solar panel must be used for the same and of what reading.

    regards,
    your biggest follower,
    Himanshu grover

  7. Unknown

    Hi Sir Swagatam,

    can u guide me if my computation is correct for my solar project,..

    MY SOLAR PANEL SETUP

    HOUSE USAGE
    Watt Load 155 Watts
    Hour Running 10 Hours
    Consumed 1550 Watt Hours

    SOLAR PANEL
    Total Watts Required 1550 Watt Hours
    Sunlight Hours 10 Hours
    Required 155 Watts

    BATTERY
    Battery 12 Volts
    Required ≥ 130 Battery AH

    SOLAR CHARGER
    Solar Panel 155 Watts
    Battery Voltage 12 Volts
    Required ≥ 15 Amps

    INVERTER
    12 Volts ≥ 155 Watts

    1. Swagatam Post author

      Hi Unknown,

      It looks correct except the following
      Solar PANEL

      Total Watts Required 1550 Watt Hours
      Sunlight Hours should be 5 Hours
      Therefore Required = 310 Watts

  8. Jayaraju Lakkepogu

    Hi Swagatam,
    This is Raju. I need a load limitter circuit. Concept is, If the load is exceeded to the defined load capacity, the power will be discussed to the particular house or room. Can forward the circuit if u have any to my mail ljayarajuatgmaildotcom

    1. Swagatam Post author

      Hi Jayaraju, I could not get the following line:

      "….the power will be discussed to the particular house or room"

      please clarify it so that I can understand the application correctly

  9. Gokul

    HI Swagatam,

    First of all you and your blog are awesome……. I really like your blog which taught me a lot of things about electronics. Basically I am an electrical engineer and frankly very new in the field of Electronics.
    I am working on 500 Watt solar project, for which I want to build the pure sine wave inverter. Can you please suggest a working solar inverter circuit diagram along with the component details.
    Input:- 12 V DC,
    Output:- 500 W, 50 Hz sine wave, 220 V AC

    Thanks a lot in advance.

  10. Gokul

    HI Swagatam,

    Thanks a lot for link. I have started working on buidling the pure sinewave inverter as per your link. and I have some queries related to this project:
    1. what is type and voltage rating of capacitor C1 & C2 (ceramic or electrolytic)?
    2. Do we have any alternatives for BDY29 as this is not available is Pune.

    regards,
    Gokul Bairagi

  11. Unknown

    I am a student doing diploma in electrical and electronics in one of the university in kenya.I am intrested in solar project project for my final year .Can you assist in getting two projects for me.thanks in advance

  12. Ashique Khan

    sir i need 24 v , 100 ah battery(12v 100ah x 2 in series) charger circuit to charge from solar. I have an arrangement of 1 kwp solar pannel (which can give 35v max. , 28 A max. if 4 panel in parallel). I want to make cost effective 1kw solar ups.

    1. Swagatam Post author

      Ashique, since your panel specs are very much compatible with your battery specs I think you can connect the panel output directly with the batteries through a 50amp ammeter.

      you can use just two panels and comfortably allow 14amp for the charging purpose

  13. Francois Jacobs

    Hello sir

    I am currently working on a solar project that charges a 12 V, 7 Ah lead acid battery.
    From this battery I would like to charge a smart phone through a USB port situated after a converter circuit.
    The smart phone requires 5 V and a max of 2000 mAh.

    The idea I have is to build a DC/DC buck converter that converts the 12 V to 5 V with a very high efficiency.
    I currently have a IRF3205 power FET and a MIC5014 Mosfet driver that I want to use. I have a Arduino nano that can be used too.

    Would you please help me in this regard with a type of design because my research has led nowhere.

    Thank you
    Francois

  14. clemo divineproject

    good day sir,I have many question to ask and they are:what component in inverter circuit determines 12volt input and 24volt input,what and what determines the watt of an inverter and how can one increase it

    1. Swagatam Post author

      Hi Clemo, voltage supply is not determined by the circuit, rather it's the other way round…the circuit must be configured and rated as per the voltage…so if your input is 12V then the transistors and the capacitors must be rated to work comfortably with this voltage, and with 24V the parts will need to be further upgraded to match this supply and so on.

    2. Swagatam Post author

      in an inverter the transformer wattage and the battery AH can be used for determining the max delivering capacity of the inverter

  15. Raj Malhotra

    Hi Swagat,

    I am looking for a developing a circuit using solar power to water my terrace plants.

    Concept : using solar panel we will charge a battery during the day. Using the battery power with small (portable fountain) motor (available on ebay will water the plant for 5 minutes after every 4-5 hours … 3 times a day.

    Few things I found on ebay, I am not sure if we can use it..

    1. http://www.ebay.com/itm/Solar-Water-Pump-Power-Panel-Kit-Fountain-Pool-Garden-Pond-Submersible-Watering-/140769158390

    2. http://www.ebay.com/itm/DC-12v-24v-LED-Display-Cycle-Delay-Timing-Timer-Relay-Switch-Turn-ON-OFF-Module/122041556572?_trksid=p2047675.c100009.m1982&_trkparms=aid%3D888007%26algo%3DDISC.MBE%26ao%3D1%26asc%3D20131227121020%26meid%3D607bee5b86804373b3d92f6b4150e156%26pid%3D100009%26rk%3D1%26rkt%3D1%26sd%3D291906186458

    3. Some rechargable battery of 6Volts

    Could you please guide?

    Regards,
    Raj

    1. Swagatam Post author

      Hi Raj,

      you will just need a 12V or 6V water valve which can be powered via a programmable timer as explained in this article:

      http://www.homemade-circuits.com/2012/04/how-to-make-simple-programmable-timer.html

      the whole system could be powered directly via a suitably rated solar panel.

      battery may not be required….the plant can be watered 3 time during day and left unwatered during night.

      If possible I'll try to update the concept in a new article