XJ25-1.5DCT4-Z hydro generator voltage regulator problem?

[jjayes]

I have  a XJ25-1.5DCT4-Z hydro generator.

I have a problem with a voltage regulator?

The generator is still working, but the dump load is still on even though a good load is connected to the output.

This problem has only just started happening and I have not had this before.

Do anybody have a any ideas of what is wrong and what I can do to correct it?

Many thanks,

Jim.

[billi]

Hi Jim

Is the water turbine connected to your house Circuit  ? And  is the heat element on as well if you connect a heavy load to the turbine directly

I am just asking , because it happens to me as well and my waterturbine is connected to my house Circuit ( a bid complicated to explain now how cause off grid  )

But sometimes the turbine produces power , but my Inverter  seems to sent power down to the turbine to supply power to the heat element 

Normally the turbine supplies about 800 watt to my house and with a stable voltage of 220 Volt
But sometimes it produces 800 Watt  ,but with nothing on in the house my inverter seems to sent extra power to the heatelement so the turbine sucks power  and operates at 260 volt

I cannot understand that either , but when i switch the turbine off and on again all is fine afterwards or it comes to normal when we open the fridge

Not much help but  perhaps a start

Billi

[Ivan]

Could be you've got a fairly inductive load attached and it's confusing the voltage regulator.

[billi]

AH thanks

Seems the problem in in my setup , cause only happens when 1.4 kw waterpump is on and after stopping the pump.  the turbine is confused .....

fast google i read this

Inductive loads can cause blowback voltage

Can anyone tell me what that means 

thanks

Billi

[Other-Power]

Transient states probably course a shift in the wave form, the turbine voltage regulator is unable to distinguish this and dumps.  Suggest putting a small induction motor to stop such an aggressive shift.

Jonathan

[RichardKB]

AH thanks

Seems the problem in in my setup , cause only happens when 1.4 kw waterpump is on and after stopping the pump.  the turbine is confused .....

fast google i read this

Inductive loads can cause blowback voltage

Can anyone tell me what that means  

thanks

Billi

When you turn off an inductive load especially when the voltage is at maximum in the sine cycle the magnetism collapses quickly inducing a high voltage across the windings this is why you hear sparking on a switch when you turn off an inductive load.

The sparking causes voltage spikes into the mains and most likely confusing the regulator on the generator.

Rich

[northern installer]

so the turbine sucks power  and operates at 260 volt

I cannot understand that either , but when i switch the turbine off and on again all is fine afterwards or it comes to normal when we open the fridge

Not much help but  perhaps a start

Billi

Hi Billi,Probably a problem with power factor;you could indeed compensate with a syncronous motor,if you get the calculations right,but in the spirit of this forum,here is another possible solution:take a voltage sensing relay,and connect directly to the turbine output,set it around 258v for a start;use the volt free contacts to switch a supply from your battery bank,to a dc linear actuator;connect the base trunnion of the actuator to the skirting board,and the rose joint on the end to the fridge door;load the fridge solely with cans of guinness,stacked sideways.Now,whenever the voltage rises,the fridge door opens for a split second,then closes again as the voltage returns to normal;with some careful experimentation,each time the door opens,one can of guinness rolls across the kitchen floor,to where the system operator is sitting........ just an idea...