Flunn paralell path!!!

[sciencisto]

your tests

I see your results are quite different. But that may be because you were using magnets of different strength and other magnetic material.
Any way, it is worth to see the difference, I want to do such tests too.

[sciencisto]

circuit

I am using this circuit to drive PPMM in the bicycle.
universal pulse driver

Please, try it too and tell me, how it works compared to H bridge or other circuits you've been using on this motors, please.

[sciencisto]

PPMM and bicycle

This is another test in which a small parallel path magnet motor turns bicycle wheel in my work shop:
YouTube - scienculo's Channel
I am still using unidirectional impulses (circuit above) to run the motor.

[zhorv324]

This is another test in which a small parallel path magnet motor turns bicycle wheel in my work shop:
YouTube - scienculo's Channel
I am still using unidirectional impulses (circuit above) to run the motor.

Nice video. Now we see the nature of parallel path motor and one disadvantage , pulse because we don t have continues power on shaft. IN that stage motor looks like 1pole asinhron motor. But if we put two or three on the same shaft and rotate them 120°° degrees (electrical ) I think we solve that problem. P.S sorry for bad English

[tutanka]

I am using this circuit to drive PPMM in the bicycle.
universal pulse driver

Please, try it too and tell me, how it works compared to H bridge or other circuits you've been using on this motors, please.

Hello,
I see your PPMM dark circuit because light is no more clear (low difinition, if you can repost thanks). Here is present only one power mosfet instead from your video SRSM1_rower2 / PPMM1_bicycle2 are visible two mosfets. I suppose that these are in parallel. an you explain or send little design how is conect circuit on parallel path engine? Coils are connected in serie or in parallel? Waiting an your reply... Regards Alex

[tutanka]

This example shows, as far as I understand the oscilloscope traces, that parallel path magnet motor can be run and function very well, when it is powered with only unidirectional impulses. So, no transistor H bridge or other circuit producing alternating direction current impulses are needed, as I have thought till now.

YouTube - SRSM1_1 zasilanie impulsami jednokierunkowymi / PPMM powered with unidirectional impulses

In this example you can see, that 50% of the cycle the motor winding are pulsed and the other 50% of the cycle they generate current. What is most important here is, that the generating current is powering the motor, so it created the other 50% of the cycle running the motor.

Theoretically it means that half of the power is needed to run the motor compared with circuits running it with alternating current impulses.

Note it down and use it with other motors. Now we know that DC motors, pulse motors and even 3 phase induction motors can be run using this kind of powering.

Now you can call it tuning and saving as much as possible but still run motors at that give same amount of power on shaft.

Hello,
How I can found circuit scheme of unipolar impulses? Regards Alex

[sciencisto]

answer

Alex, I've replied to your questions in the other thread, you asked exactly the same.

[sciencisto]

PPMM on a bicycle

These are my last 3 short films showing a small parallel path magnet motor installed on a bicycle. Short indoor tests.
YouTube - SRSM1_rower3 / PPMM1_bicycle3
YouTube - SRSM1_rower4 / PPMM1_bicycle4
YouTube - SRSM1_rower5 / PPMM1_bicycle5

[zhorv324]

These are my last 3 short films showing a small parallel path magnet motor installed on a bicycle. Short indoor tests.
YouTube - SRSM1_rower3 / PPMM1_bicycle3
YouTube - SRSM1_rower4 / PPMM1_bicycle4
YouTube - SRSM1_rower5 / PPMM1_bicycle5

Nice ,but how much Wat s your motor drain from battery in test

[sciencisto]

current consumption

The motor consume from a few tens to up to 1 kW, depending on the load. When starting the bicycle it is something like 33 V at 8 to 25 A.

BTW, I made mechanical power measurement of this small PPMM and calculated the efficiency, at best it was 45%

[tutanka]

The motor consume from a few tens to up to 1 kW, depending on the load. When starting the bicycle it is something like 33 V at 8 to 25 A.

BTW, I made mechanical power measurement of this small PPMM and calculated the efficiency, at best it was 45%

Hello,
But the problem of efficency for you is motor or electronics?

[sciencisto]

motor low efficiency

In this particular case the motor itself is of very low efficiency because the space between the rotor and stator is too large.

[zhorv324]

In this particular case the motor itself is of very low efficiency because the space between the rotor and stator is too large.

How large , everything bigger than 0,5mm is bad

[sciencisto]

gap space

I don't have any tool to measure the gap, but looking at it I think it is something between 1 and 2 mm.

[zhorv324]

I don't have any tool to measure the gap, but looking at it I think it is something between 1 and 2 mm.

To big , l think that Jetijs motor have only 0.2mm . Mine motor have gap about 0.6