Author Topic: induction motor as generator fail  (Read 4883 times)

mike90045

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Re: induction motor as generator fail
« Reply #30 on: March 16, 2018, 02:25:57 AM »
I see that starter/generator is a pretty hefty load, by the speed the engine winds down,  how much load can the engine drive in addition to the s/g  ?    2Kw ?

veggie

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Re: induction motor as generator fail
« Reply #31 on: March 16, 2018, 02:49:46 PM »
I see that starter/generator is a pretty hefty load, by the speed the engine winds down,  how much load can the engine drive in addition to the s/g  ?    2Kw ?

mike90045,

In that video the engine winds down quickly because I do not activate the decompression lever until it's almost stopped.
That is my normal procedure.
When I kill the engine fuel rack, any load from the generator drops away exponentially as the Generator rpm falls below 2500 and electricity production falls away. As the rpm continues to fall below 1500 rpm the generator switches to "Starter"mode and pulls power from the batteries. At that point the user flips the switch which disengages the starter/generator.
To automate this, the toggle switch can be replaced by a relay, and a servo or actuator could be fitted to the decompression lever.

The Generator only produces about 20 amps max. and the load on the engine is only there unit the charging battery is full.
The voltage regulators takes care of that.

Veggie
« Last Edit: March 16, 2018, 02:51:29 PM by veggie »
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cujet

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Re: induction motor as generator fail
« Reply #32 on: March 23, 2018, 09:46:23 PM »
...but now I have to find something else to do with this little engine.

The answer seems clear. Install a quality generator head.
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gusbratz

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Re: induction motor as generator fail
« Reply #33 on: March 26, 2018, 09:16:44 PM »
I already have my listeroid with 10kw ST head so it seemed like a waste to build another generator. I sold it to my boss and he is having fun with it now.