So its been a while and i would like to give this project a second chance with some better thoughts. So lets say i have the car battery (35 ah) connected to the power inverter (2000 watts) and a brushed 220v washing machine motor connected to the inverter with thick cables and nice connectors. The problem was that when i put load on the motor the inverter would stop the motor and i had to restart everything. My guess is that the motor draws more current than i can provide at the time that the motor has load on it.

I wonder if there is a way that i can reduce the ah draw of the motor with a diode or something to make the motor itself to draw less current. Or i can put a capacitor on the terminals of the motor and when the motor starts with load the capacitor can help for a sec and turn the motor more easily. But i dont know what capacitor i can use .

The motor i connected to a wheel so when i start the motor it has some resistance and at that time i think the motor draws to much current and then stops.

 

I went back and looked at the picture of the tag on the motor, and the wattages, given as 250 and 450 watts. and the speeds, given as 750 RPM and 1350 RPM. At 220 volts that is a bit over 1 amp and 2 amps. Not that much.

So whhat sort oof connection arrangement does the motor have to select those two different speeds? AND, you commented that it is a brush type of motor, which is not common for top load washers. Or is this from a front loading wash machine? IN that case it would be a reversing type of motor.
So please give us more of a description so that some correct assistance can be provided. It seems that quite a few details are missing here.

 

Οκso the washing machine was a front loader and also i said brushed motor because it has brushes and 5 cables and i think its called a universal motor. Also i searched a little bit and i saw that with universal motors like angle grinders etc you cant use a potentiometer to reduce speed. Yes the amps is 1 or 2 not that much but i dont know why i have a problem with inverter and battery and not with the wall ( if i connect it to the wall).
If you need any other information and i know the answer just ask.
Also the problem may be with the inverter but without load the motor works and if i put some load it goes biib for a sec and then stops. The motor is mounted to a bike so we speak about 80 kilos and with gear reduction about 30 . And this a lot of load . I will make some changes and i ll repost.

I went back and looked at the picture of the tag on the motor, and the wattages, given as 250 and 450 watts. and the speeds, given as 750 RPM and 1350 RPM. At 220 volts that is a bit over 1 amp and 2 amps. Not that much.

So whhat sort oof connection arrangement does the motor have to select those two different speeds? AND, you commented that it is a brush type of motor, which is not common for top load washers. Or is this from a front loading wash machine? IN that case it would be a reversing type of motor.
So please give us more of a description so that some correct assistance can be provided. It seems that quite a few details are missing here.

 

Ah! Some clarity. Running a motor off an inverter can be fussy. Some inverters are true sine wave inverters, others are - um - can't think of the term - but they're more of a stepped sine wave; and some motors don't seem to like that very much. Or at all.

 

What does your inverter output as to wave shape? True sine wave, modified sine wave, or maybe square wave? What wave shape does the motor normally run on?

I don't know the wave of my inverter. The sine one is the best i think but if i have an other its waste of time or it can work

Some motors will run on a MAW (Modified Sine Wave and some not so well. The TSW (True Sine Wave) inverters cost more but also most closely duplicate standard mains voltage. Anyway you have a few things to look over including battery AH capacity and cable size.

Again, just make sure your motor will run on the wave shape you have.

Ron

After a re-read of the thread, while most of us were focusing on the battery and cables, I think the true issue is the type of inverter you have. Please, if you can, post information on your inverter(s).

 

OK, the motor is a brush type, but with 5 wires. I see a probable cause of the issue being an incorrect connection. There is a fair amount of puzzle involved here because there would be different connections for the different speeds, and also there would be some method of reversing the rotation. So now there is a real question about connections, because they are not just simple. Does the TS have the circuit of that wash machine that the motor was removed from? That would be the very best source of information. Or at least the brand of the machine?
To reverse the rotation the phase-polarity between the rotor and the fields must be reversed, and that may be a bit complex.
A question now, does the motor have two brushes, or four brushes? And are two of the wires connected only to the brushes? or teid to some windings? It may be that this is not a series connected arrangement motor.

 

OK, the motor is a brush type, but with 5 wires. I see a probable cause of the issue being an incorrect connection. There is a fair amount of puzzle involved here because there would be different connections for the different speeds, and also there would be some method of reversing the rotation. So now there is a real question about connections, because they are not just simple. Does the TS have the circuit of that wash machine that the motor was removed from? That would be the very best source of information. Or at least the brand of the machine?
To reverse the rotation the phase-polarity between the rotor and the fields must be reversed, and that may be a bit complex.
A question now, does the motor have two brushes, or four brushes? And are two of the wires connected only to the brushes? or teid to some windings? It may be that this is not a series connected arrangement motor.

The motor has two brushes and the connection is correct because the motor works fine even with the inverter without a load. The motor is mounted to a bike and if i put a 50 meter cable from the wall i can go for a ride

 

OK, now we do have more information. That points toward the problem being with the inverter. If an ellectic heater load is available that would be a simple means to verify that the inverter is able, or not able, to deliver adequate voltage to a load. All it would require is a means to connect the inverter output to the heater power connection, and be able to check the voltage when the system was powered. An array of incandescent light bulbs would also work, but having 20 of the 100 watt bulbs in sockets wired in parallel could be quite a challenge. A heater rated at 750 watts would be a good start, and if two of them were available then 1500 watt operation could also be checked. Based on the two inverters that I own, my guess is that the 2000 watt rating may be "rather optimistic" .

 

OK, now we do have more information. That points toward the problem being with the inverter. If an ellectic heater load is available that would be a simple means to verify that the inverter is able, or not able, to deliver adequate voltage to a load. All it would require is a means to connect the inverter output to the heater power connection, and be able to check the voltage when the system was powered. An array of incandescent light bulbs would also work, but having 20 of the 100 watt bulbs in sockets wired in parallel could be quite a challenge. A heater rated at 750 watts would be a good start, and if two of them were available then 1500 watt operation could also be checked. Based on the two inverters that I own, my guess is that the 2000 watt rating may be "rather optimistic" .

If i put to the inverter an angle grinder of 750 watt i can cut metal

 

If i put to the inverter an angle grinder of 750 watt i can cut metal

So i ll make some changes and then i ll repost. And also i ll sent the power inverter spects

 

So i ll make some changes and then i ll repost. And also i ll sent the power inverter spects

An angle grinder is rather forgiving relative to the power you give it. And light bulbs or a heater are purely resistive loads so they will simply consume power.

 

An angle grinder is rather forgiving relative to the power you give it. And light bulbs or a heater are purely resistive loads so they will simply consume power.

If you have the datasheet of the inverter you can figure out what type of alarm you have,
generally you have a switches in the inverter to select the output voltage (210, 220, 230, 240), if you select 210V it may be too low
in a precedent post you are saying that you have only 190V, this may be an under voltage in the input of the inverter (the 12V )
generally a push pull is used in the step up part and the transformer is designed to have a given ratio so if your input voltage is too low the output voltage will be low also,
so it may be your connection that is not quite well in the 12V side or a too small battery sash as when you draw a lot of current at it the voltage fall for a while.