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12-0-12v, 230v, 1000watt inverter

Discussion in 'General Electronics Discussion' started by Cheeryboy, Sep 18, 2018.

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  1. Cheeryboy

    Cheeryboy

    1
    0
    Sep 18, 2018
    Please I need help is there anything like 1000watt inverter?
    Because, going by the post I saw on this forum. Which says. To calculate for current at the secondary winding we use
    is=watt/volt = 1000w/12v = 83.3amps.
    I think this value is too high. Bcus Wen using this value to calculate for core area CA=1.152√24*83.3=51.51. Please I need help for 1000watt inverter calculations . How do I get the turns per volt for this design. Am using 8 irfp250n mosfet for the circuit
    Thanks
     
  2. kellys_eye

    kellys_eye

    4,275
    1,147
    Jun 25, 2010
    83A is the right figure..... generally, when going to higher inverter wattage, you go to higher primary voltages too - in this case going to 24V would half the primary current.

    If you look at ordinary UPS devices you will find they use 24/48V depending on their wattage. Using an old UPS for the basic ingredients of an inverter isn't a bad idea actually - I have cannabalised an old 700W UPS to run my workshop during power outages and another to run our TV/internet/laptop and LED lighting in the house.

    You can often find old UPS devices free of charge - they most often cost more to post than they're worth anyway.

    UPS devices aren't meant for continuous operation though so if you decide to go this route then use a 2kW (1.5kW) version for a maximum 1kW output and under-run it or add cooling to keep it from overheating.
     
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