Deleted

Gerry1

victor2 said:

Gerry1 said:

Reed_Richards said:Gerry1 said:

Far better to have a system that 'pings' the fridge every few minutes to see whether it's calling for power, and then fires up the inverter for a set period.  

Don't you mean calling for energy, @Gerry1 ?

Not really.  The 'ping' would be a snapshot to determine what the power drawn by the fridge would be.  If it's less than a few watts, then the system would do nothing and try again a few minutes later.  If it was say 10W or more then it would switch the supply on for the set period.

I don't claim to know how a typical fridge/freezer operates, but would guess that upon receiving power they run the compressor then let the thermostatic controls decide if it is needed, so the "ping" would have to be tailored to deal with an initial demand before deducing whether or not the supply should be left on?

I don't have a fridge/freezer, but I'm fairly sure my larder fridge doesn't use any significant power until it decides it needs to cool down a bit, and then the motor fires up.

So a 'ping' test might well work: it wouldn't need to power the motor, if its output voltage collapsed then the 'beefy' supply would then need to be connected to the fridge instead.

victor2

Gerry1 said:

victor2 said:

Gerry1 said:

Reed_Richards said:Gerry1 said:

Far better to have a system that 'pings' the fridge every few minutes to see whether it's calling for power, and then fires up the inverter for a set period.  

Don't you mean calling for energy, @Gerry1 ?

Not really.  The 'ping' would be a snapshot to determine what the power drawn by the fridge would be.  If it's less than a few watts, then the system would do nothing and try again a few minutes later.  If it was say 10W or more then it would switch the supply on for the set period.

I don't claim to know how a typical fridge/freezer operates, but would guess that upon receiving power they run the compressor then let the thermostatic controls decide if it is needed, so the "ping" would have to be tailored to deal with an initial demand before deducing whether or not the supply should be left on?

I don't have a fridge/freezer, but I'm fairly sure my larder fridge doesn't use any significant power until it decides it needs to cool down a bit, and then the motor fires up.

So a 'ping' test might well work: it wouldn't need to power the motor, if its output voltage collapsed then the 'beefy' supply would then need to be connected to the fridge instead.

Going for the project then? 

Gerry1

victor2 said:

Gerry1 said:

victor2 said:

Gerry1 said:

Reed_Richards said:Gerry1 said:

Far better to have a system that 'pings' the fridge every few minutes to see whether it's calling for power, and then fires up the inverter for a set period.  

Don't you mean calling for energy, @Gerry1 ?

Not really.  The 'ping' would be a snapshot to determine what the power drawn by the fridge would be.  If it's less than a few watts, then the system would do nothing and try again a few minutes later.  If it was say 10W or more then it would switch the supply on for the set period.

I don't claim to know how a typical fridge/freezer operates, but would guess that upon receiving power they run the compressor then let the thermostatic controls decide if it is needed, so the "ping" would have to be tailored to deal with an initial demand before deducing whether or not the supply should be left on?

I don't have a fridge/freezer, but I'm fairly sure my larder fridge doesn't use any significant power until it decides it needs to cool down a bit, and then the motor fires up.

So a 'ping' test might well work: it wouldn't need to power the motor, if its output voltage collapsed then the 'beefy' supply would then need to be connected to the fridge instead.

Going for the project then? 

I don't have any solar, inverters or whatever, so I'll have to leave it as an idea for others to explore !