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

 

It should.....if you have the current. One could test it with 10 car batteries in series. Or what ever voltage you want.

 

Is it safe, to use it on DC

Edison thought so. The stove was tested and approved for 120VAC, but the element will get hot on DC. Not sure about the controls safety...

 

Wouldn't advise it, the AC rated thermostat contacts will self destruct first time they open. HV DC + current = high power arc just like a DC welder.

You would have to use some sort of H-Bridge circuit to square wave alternate the polarity from the DC panels to prevent arcing.


Cheers
Mike

 

The element is no problem, there is circuitry s that require AC so will not work.
Max.

 

Yes it will run on DC, but the Switch contacts will be rated lower on AC than DC and may burn out after a while ..

 

The stove will most likely operate, but your solar panel probably can't supply the current you need. Your element is probably in the range of 1500 watts.

But we're all guessing, because you HAVEN'T PROVIDED THE INFORMATION WE NEED!

 

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

What is the Model #, URL Link and Wattage of each Solar Panel ?
What is the Model #, URL Link and Wattage of the Electric Stove Burner ?
Is the Stove rated AC / DC on the nameplate ?

You need to match the Volts, and exceed the Amps, because actual PV Watts output will be much lower than you expect.
You should point the Solar Panels directly towards the sun: morning (east), then noon (up) , then evening (west).

Guaranteed to work ...
PV + Charger + Deep Cycle Battery Pack + ( MSW or PSW ) Inverter = power available all day, and dinner after sunset.

 

Right. I forgot the termostats...
Wattage is not an issue. I got 1000w and the stove is 700w.
So, I had to eliminate all circuitery and connect it with a switch directly to the panels.
Any ideas to rebuild a small and easy termostat on DC?

 

A 6-10 setting PWM should do. Or maybe just low, med, and high.

 

The On/Off Switch ...
a) must be rated at 15 DC Amps or more
b) must be rated at 150 DC Volts or more - What is your max Voltage Open Circuit?
The Switch must be DC rated, not just AC rated.

Now you know why we prefer to switch AC power, not DC power.
With DC Volts, consider a MOSFET.

 

I was thinking of something like this. This is for controlling a DC motor. For the heating element, one would need a heavier switching transistor.

https://howtomechatronics.com/how-i...dc-motor-speed-controller-using-555-timer-ic/

 

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

Mains is usually stated as the RMS value which would give you the same heating effect as DC into a purely resistive heating element.

There may be other gadgets that don't like DC - fan and/or timer motors are likely to be synchronous type and will present the lower Dc resistance of the winding wire instead of inductive reactance of the solenoid winding, and could burn out.

Any electronics has the potential for a step down mains transformer - will probably also indicate its distress with smoke signals.

 

START
Make and model of the stove?
GOTO START

 

I found a switch: 250V 720A heavy duty
No brand of stove, just a chap chinese one. No motors etc. just heating element, the termostator and two bulbs.

I found an old car battery starter charger. Perhaps I could use some parts of this...

 

Most parts AC related.
Max.