Hello guys,

I want to buy for my project a small ac generator to have a 12VAC to 18VAC per example and power of 10 W

where can I buy this tiny generator .

I tried to make a BLDC motor as a generator by using an ac drill but the result is 3 VAC on 25 rps I think .

so please has anyone an idea about small generator or alternator ?

thank you in advance

Zara

 

How about using an oscillator and audio amp to generate the AC power?

 

hello,

No Cruts, my project is to produce voltage from external generator

 

No Cruts, my project is to produce voltage from external generator

What will drive this generator?

 

Is 1ph or 3 ph required?
Any particular Hz?
You require a P.M. BLDC motor, an AC drill usually has a universal motor and will not generate, at least to any usefull degree.
A stepper motor can also be used to gen AC.
Max.

 

Hello,

The generator is used for supplying an electronic board so it's going to a rectifier after generation .

It's not important to be 3 phase or 1 phase , but the one phase is better for me.

and about the stepper motor can do the job more than the BLDC I've used .


thank you very much

 

Why not use a DC P.M. brushed motor to begin with if you do not require the AC?
Max.

 

Hello ,

I read about the old dc generator in the car , and it's replaced by a dynamo or alternator to reduce the size and the effiency without the commutator existed in the DC motor.

 

If you only want 10watts the size difference is going to be minimal.
One of the reasons for the alternator over DC is also sufficient output down to very low rpm, the automobile application rpm control is not constant.
Max.

 

Hello,

Mmm ok I want to see this choice , I hope this help , but can you give some sites to buy this generator ?

thank you

 

You just need to seek out a 1amp 12vdc DC motor.
The DC output is dependant on rpm so 12v will be at the rated rpm of the motor.
If you want a lower rpm source then opt for a suitable higher voltage motor that you can run at a lower rpm.
Max.

 

How about one of these generators driven by a bicycle tire for the lights? E

 

Hello Max,

Thank you very much for your fast reply.

Nykolas , yes it's right but it has a low power output , and it's big compared with DC motor.

 

Hello everyone,

I found an 3 phase ac dynamo 10W.
And I want to do some simulations , to do that I should find the Kt constant and Kv , is it true , is the ac synchronous motor like the bldc motor calculation the constants ?

If it's, what's the method to find this constants ??


thank you

 

More info on the alternator is needed.
Max.

 

Hello Max

for more info please look to the link of the company on alibaba site:
http://bdtf.en.alibaba.com/product/...rushless_Dynamo_with_10W_output_ZSFD_PH9.html

There's info on the motor but not the Kt .

Thank you very much Max.

 

It does not appear to show spec's? Dynamo usually refers to a DC type generator, if AC it is alternator, but they use both terms so it is a little misleading?
Max.

 

hello Max

Ok I said about the alternator

so?

thank you