Regarding voltage fluctuation

[Rakesh16]

hi,

there is lots voltage fluctuation at my village where my water pump(3-phase) is connected
is there any solution to stabilise the voltage and pump remains on continuously

is it possible using a capacitor



thanks
Rakesh

 

[FvM]

If a 3-phase motor stops to run, then the problem is beyond "voltage fluctuations", I think. It's rather a case of temporary power loss. Even a voltage stabilizer probably won't help. "A capacitor" won't help in any case.

 

[Rakesh16]

i think there is no power loss
but the voltage goes too low as every one faces same problem

is there any solution to keep the voltage level maintained

thanks
Rakesh

 

[BradtheRad]

When grid AC power gets that weak, it means the electric company is severely overburdened.

To maintain power to your pump, you would need to draw greater current at the reduced voltage, then convert the power to a higher voltage.

However you can be sure everyone is trying to draw greater current from the overloaded grid.

 

[Rakesh16]

Hi,

Yes this is right, there is surely overburden
but is there any solution in this overload situations

Thanks
Rakesh

 

[BradtheRad]

It's a question whether you can provide power to the existing pump. You must not try to dismantle any part of the mechanical system. Suppose it were to stop working? Even if you did not break it, it will look as though you did.

It will be best if you can provide a different power source. It would be great if you can obtain a 3-phase generator, and hook it up to a truck engine which has a power take-off (a splined shaft extending out from the end of the crankshaft).

Only a knowledgeable electrician should rewire the 3-phase connections. Under no circumstances should an electrical generator be connected so that it could send power out onto the grid.

Other power sources might include solar panels, or wind turbines, etc. These are costly, and likely to produce basic DC, or 1-phase AC.

If you use DC, or 1-phase AC, then you will need a pump that works on that type of power.

As a last resort, you can have beasts (or people) turn a mechanical pump.

If you construct a different system, try to get it working by itself. If you connect anything to the existing pump system, make sure it can be restored to its original working condition, if you need to do so.

Someday we in America may be in the same situation you are in. And our population will likely not handle it peaceably, because we are so accustomed to life with reliable electricity.

 

[andre_luis]

is there any solution to stabilise the voltage and pump remains on continuously

The raised question brings its own answer: You need a stabilizer system, preferably built with serial topology, which allows a lower manufacturing cost. However, such systems are not capable of handle with such varying input voltage too high, and also are not exactly designed for operation with inductive loads.

So, it is required few more technical details concerning to electric conditions under what the pump is subjected, in order to allow design an UPS system correctly rated for where will be applied.


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[betwixt]

All these comments are correct, the one not mentioned yet is to increase the current carrying capability of the power cables. The drop in voltage at the pump is because the voltage dropped in the wiring to it is too high, you could try using thicker cable or adding a second cable in parallel to the existing one, this solution is specially valid if the pump cable is very long. Wiring a 3-phase pump must be done carefully and you must ensure the wires are connected the right way around or it will run in reverse!

Brian.