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Electrical stove on DC?

Discussion in 'Power Electronics' started by snote, Apr 9, 2019.

  1. snote

    snote

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    Apr 9, 2019
    I have a power source, 4x 34V solar pannels, =136V DC!
    I want to use the power to drive an electric stove.
    I have a one burner stove, it needs 110V AC.

    My question. Is it safe, to use it on DC? If not, what have I
    to change to make it work?

    Thanks
    Sven
     
  2. Minder

    Minder

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    Apr 24, 2015
    The element itself is no problem, but there is certain to be AC related circuitry involved that may preclude it being used totally on DC.
    M.
     
  3. Bluejets

    Bluejets

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    Oct 5, 2014
    How much current will the panels deliver?
     
  4. snote

    snote

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    Apr 9, 2019
    Thanks for your answers!
    The cables are directly connected to the heating coil. There are only 2 control bulbs implemented.
    The solar panels should deliver 1000w, the stove is rated with 700w.
    If a cloud would pass and the current would go down, could there anything else happen than the stove running colder?
     
  5. Bluejets

    Bluejets

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    698
    Oct 5, 2014

    It's just resistive so should be no problem.
     
  6. Harald Kapp

    Harald Kapp Moderator Moderator

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    Nov 17, 2011
    For example fans or any motors that may be involved.
     
  7. snote

    snote

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    Apr 9, 2019
    And the termostats, which could pose a thread, I just realized...
     
  8. Harald Kapp

    Harald Kapp Moderator Moderator

    9,137
    1,846
    Nov 17, 2011
    Plus: The switches and possibly relays within the oven are designed to operate on AC, specifically with respect to their turn-off capability: When a strong current is interrupted (turned off) it tends to create an arc across the contacts. With DC, a comparatively low voltage is sufficient to sustain the arc and the contacts will burn away (you're lucky if it's only the contacts). With AC the repetitive zero crossings of voltage and current help to turn of fthe arc.
     
  9. snote

    snote

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    0
    Apr 9, 2019
    Yes, I see, thanks!
    I will try to connect the pure heating element through a 250VDC/720A heavy duty switch and see in practise if it makes sense to use it without termostat.
     
  10. FuZZ1L0G1C

    FuZZ1L0G1C

    365
    112
    Mar 25, 2014
    What about this? (depending on your budget of course)..
    Solar panel charges lead acid battery(s).
    Battery supplies power to power inverter of 110VAC with sufficient current rating (1KW or more).
     
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