Alternate Power

[marcspaz]

11 minutes ago, OffRoaderX said:

Geezus Krist!  "some people" are SO predictable....

 

Im just proud that its not me this time.

[Lscott]

From one of my text books in the electronic library I keep handy.

P-Pole Machines.pdf

[WRKC935]

6 hours ago, OffRoaderX said:

Geezus Krist!  "some people" are SO predictable....

Yes, you are 100% predictable Randy.  I will leave you to figure out how.

 

 

 

[SteveShannon]

6 hours ago, Lscott said:

From one of my text books in the electronic library I keep handy.

P-Pole Machines.pdf 167.08 kB · 3 downloads

Thank you!  That shows me how I was wrong. Damnit.
Edited to add: wrkc935 was right!

[Lscott]

12 minutes ago, SteveShannon said:

Thank you!  That shows me how I was wrong. Damnit.

Sorry. 

[SteveShannon]

1 minute ago, Lscott said:

Sorry. 

Shit happens.

[WRYZ926]

I'm use to working on and with military generators. Those all ran at 3600 rpms to produce either 240/120 single phase or 208/120 three phase at 60 Hz. Granted I got out of the Army in 1996 and things change over time.

I personally would not want to use a hand crank or bicycle generator to try and charge a larger capacity battery. But that is just me.

I am with @marcspaz in that I would be looking at a solar charge setup.

LIPO4 batteries are pretty light now days. I bought a 100 AH LIPO4 battery to replace the lead acid trolling motor battery and the weight difference was pretty significant. The deep cycle battery weighs around 60 pounds and the same size LIPO4 battery is around 23 pounds. Even the 10 AH LIPO4 batteries are quite a bit lighter than the standard lead acid batteries of the same size.

[WRKC935]

On 10/28/2024 at 11:27 PM, SteveShannon said:

Thank you!  That shows me how I was wrong. Damnit.
Edited to add: wrkc935 was right!

Well, I could have handled that better.  But I see what you were saying.  The reason I brought it up was exactly what you said.  Holding 3600 or ever 1800 RPM at a steady state with muscle power is not going to be possible.  The requirements mechanically to pull it off (mechanical governors and the like) would add both complexity and additional mechanical load to the 'crank' input to maintain that RPM.  The poles thing wasn't as important as the need for steady state rotational input for frequency / voltage stability. 

And as mentioned by others, using a DC generator or alternator with rectifier for DC output is a better option and if you feed that into a storage system (batteries or super capacitors) the energy can be generated and stored for later use in addition to being immediately available for use. 

I read the big windmills that generate AC power do use a massive CVT (constant velocity transmission) between the blade hub and the generator head.  My question is how all that gets synced.  You working in power generation probably understood that the generator needed phase synced with the grid before you could connect and start feeding power.  Not sure how those pull that off.

 

[SteveShannon]

7 hours ago, WRKC935 said:

Well, I could have handled that better.  But I see what you were saying.  The reason I brought it up was exactly what you said.  Holding 3600 or ever 1800 RPM at a steady state with muscle power is not going to be possible.  The requirements mechanically to pull it off (mechanical governors and the like) would add both complexity and additional mechanical load to the 'crank' input to maintain that RPM.  The poles thing wasn't as important as the need for steady state rotational input for frequency / voltage stability. 

And as mentioned by others, using a DC generator or alternator with rectifier for DC output is a better option and if you feed that into a storage system (batteries or super capacitors) the energy can be generated and stored for later use in addition to being immediately available for use. 

I read the big windmills that generate AC power do use a massive CVT (constant velocity transmission) between the blade hub and the generator head.  My question is how all that gets synced.  You working in power generation probably understood that the generator needed phase synced with the grid before you could connect and start feeding power.  Not sure how those pull that off.

 

When I left wind projects generated AC power that was converted to DC and then back to 60 Hz AC before connecting to our grid.  I’m certain the technology has changed in the past nine years, but I haven’t kept up.

[LeoG]

The best and most practical way to have the power generator follow the AC cycle is to run it through a synchronized inverter.  That way whatever you throw at the inverter is aligned perfectly with the grid.