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Author Topic: self charging electric car (prototype 1)  (Read 20884 times)

dreamyear

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self charging electric car (prototype 1)
« on: January 27, 2013, 11:36:02 AM »



self charging electric car




capturing back EMF to capacitor....and discharge capacitor back into battery 






http://www.youtube.com/watch?v=Ii5zb6jM55E&feature=youtu.be



« Last Edit: January 27, 2013, 02:33:24 PM by dreamyear »

Michaelpier

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Re: self charging electric car (prototype 1)
« Reply #1 on: January 27, 2013, 01:03:58 PM »
Nice work dreamyear,
what is the difference between circuit-picture 1 and circuit-picture 3 ?


Michael

dreamyear

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Re: self charging electric car (prototype 1)
« Reply #2 on: January 27, 2013, 02:34:10 PM »
Nice work dreamyear,
what is the difference between circuit-picture 1 and circuit-picture 3 ?


Michael




they are both same....   

gotoluc

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Re: self charging electric car (prototype 1)
« Reply #3 on: January 27, 2013, 05:42:21 PM »
Hi dreamyear,

it's a good idea to experiment with trying to collect DC motor coil flyback.

I'm trying to understand how your mechanical switch is turned?... it looks like it's turned independent from the hub motor (L1)?... if so, how would the timing work for only the L1 flyback to be directed to the capacitor at the right moment?

I'm not saying it can't work, just trying to understand your experiment. I have tried this in the past but the timing and switching circuit is the main problem.

Thanks for sharing

Luc

dreamyear

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Re: self charging electric car (prototype 1)
« Reply #4 on: January 27, 2013, 06:21:06 PM »
Hi dreamyear,

it's a good idea to experiment with trying to collect DC motor coil flyback.

I'm trying to understand how your mechanical switch is turned?... it looks like it's turned independent from the hub motor (L1)?... if so, how would the timing work for only the L1 flyback to be directed to the capacitor at the right moment?

I'm not saying it can't work, just trying to understand your experiment. I have tried this in the past but the timing and switching circuit is the main problem.

Thanks for sharing

Luc


[size=78%]
[/size]
[size=78%]
[/size]
[size=78%]it's very simple [/size]switch[size=78%] .. u can do this with realy but i prefer this way [/size]
[size=78%]
[/size]
[size=78%]i [/size]attached[size=78%] pic     [/size]






dreamyear

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Re: self charging electric car (prototype 1)
« Reply #5 on: January 27, 2013, 06:21:35 PM »
u can do this with realy but i prefer this way

dreamyear

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Re: self charging electric car (prototype 1)
« Reply #6 on: January 27, 2013, 06:30:25 PM »
Hi dreamyear,

it's a good idea to experiment with trying to collect DC motor coil flyback.

I'm trying to understand how your mechanical switch is turned?... it looks like it's turned independent from the hub motor (L1)?... if so, how would the timing work for only the L1 flyback to be directed to the capacitor at the right moment?

I'm not saying it can't work, just trying to understand your experiment. I have tried this in the past but the timing and switching circuit is the main problem.

Thanks for sharing

Luc

gyulasun

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Re: self charging electric car (prototype 1)
« Reply #7 on: January 27, 2013, 06:55:33 PM »
Hi dreamyear,

If I can see correctly, you show 3 different schematics:
1st is in the beginning of your video with a bridge rectifier
2nd is in your first post, one diode and you discharge the capacitor directly into the battery
3rd is in your Reply #4 above, one diode and you dicharge the capacitor via the motor into the battery

Ah, I have just noticed you modified your schematic, your Reply #5 above and now this latter circuit seems to be same as the one in your very first post. 

I think that using a full wave diode bridge is better than using a single diode because a DC motor produces spikes with both polarities to deal with when the brushes cut the current (in that moment the normal induced voltage is present across the rotor coils).

Would you answer gotoluc question: 

"I'm trying to understand how your mechanical switch is turned?... it looks like it's turned independent from the hub motor (L1)?..."

Thanks,  Gyula

gotoluc

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Re: self charging electric car (prototype 1)
« Reply #8 on: January 27, 2013, 06:55:40 PM »
I'm sorry, I just tried your circuit and the capacitor is charged by the battery and no L1 (motor) flyback goes to capacitor.

Luc

gyulasun

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Re: self charging electric car (prototype 1)
« Reply #9 on: January 27, 2013, 07:08:53 PM »
Hi dreamyear,

Do you happen to have an oscilloscope?  If yes, please check the current waveform across a 0.1 Ohm power resistor, just insert the resistor in series with the negative pole of the battery and show the waveform across it.  I indicated in your schematic where I think the resistor.

Thanks, Gyula

conradelektro

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Re: self charging electric car (prototype 1)
« Reply #10 on: January 27, 2013, 07:12:41 PM »
@dreamyear: besides the circuit diagram problems, the motor is not on all the time. This will make it weaker (less torque).

Greetings, Conrad

vrand

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Re: self charging electric car (prototype 1)
« Reply #11 on: January 27, 2013, 08:23:55 PM »
u can do this with realy but i prefer this way


Very interesting experiment, keep up the good work! Cheers

gyulasun

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Re: self charging electric car (prototype 1)
« Reply #12 on: January 27, 2013, 09:49:06 PM »
Hi dreamyear,

I would like to show you a schematic which could be used and you may wish to hook up your DC motor as shown here:
http://jnaudin.free.fr/ossiemotor/images/ossiemotorv13.gif   from Naudin site: http://jnaudin.free.fr/ossiemotor/indexen.htm

Your DC motor would connect to the right hand side to replace the seriesly connected air core coils and your two mechanical switches would be modified in timing: BOTH would be needed to switch ON at the same time and then OFF also at the same time. In the simplest case you may wish to position the rotary prongs at 180° of each other (like when a clock shows 6 o'clock for instance: the minute-hand and the hour-hand form a straight line and at their ends they touch the stationary contacts).  In the original schematic Naudin and Ossie used reed switches that were triggered by control magnets simultenously ON or OFF.

This way all the spikes right after the switch-off of the two switches can immediately go back into the battery via the fast diodes which are permanently hooked up, they form a full wave diode bridge.

As conradelektro noticed for your setup, your DC motor has a smaller torque and this will be so with this suggested setup too BUT for the test purposes this does not matter, once you are able to measure the power taken out of the battery and to measure the real torque.  OR if you have an oscilloscope, you could see the current pulses going out of the battery and going back into it (this latter is seen when the switches are just switched OFF) as I described in my previous post above so that comparing the two pulses we could estimate power levels.

If you build this setup, try to use it first without the puffer capacitor shown in parallel with the battery and later connect it. Of course you do not need to use the series 22 Ohm resistors either. 

rgds,  Gyula

dreamyear

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Re: self charging electric car (prototype 1)
« Reply #13 on: January 28, 2013, 02:31:33 AM »
I'm sorry, I just tried your circuit and the capacitor is charged by the battery and no L1 (motor) flyback goes to capacitor.

Luc


i'm sorry... use bride rectifier instead  single diode.............are u serious?.. i get  50v back emf  with 24v dc mtor


dreamyear

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Re: self charging electric car (prototype 1)
« Reply #14 on: January 28, 2013, 02:39:12 AM »
Hi dreamyear,

Do you happen to have an oscilloscope?  If yes, please check the current waveform across a 0.1 Ohm power resistor, just insert the resistor in series with the negative pole of the battery and show the waveform across it.  I indicated in your schematic where I think the resistor.

Thanks, Gyula


sorry   i do not have   oscilloscope