Storing Cookies (See : http://ec.europa.eu/ipg/basics/legal/cookies/index_en.htm ) help us to bring you our services at overunity.com . If you use this website and our services you declare yourself okay with using cookies .More Infos here:
https://overunity.com/5553/privacy-policy/
If you do not agree with storing cookies, please LEAVE this website now. From the 25th of May 2018, every existing user has to accept the GDPR agreement at first login. If a user is unwilling to accept the GDPR, he should email us and request to erase his account. Many thanks for your understanding

User Menu

Custom Search
« previous next »
Pages: 1 [2]   Go Down

Author Topic: Pulse Motor ( no work required to remove rotor magnets from cores )  (Read 21778 times)

gyulasun

  • Hero Member
  • *****
  • Posts: 4117
Re: Pulse Motor ( no work required to remove rotor magnets from cores )
« Reply #15 on: April 25, 2009, 01:03:20 PM »
Quote from: SkyWatcher123 on April 25, 2009, 05:24:51 AM
Hi folks, just an update. i've hooked up 1 coil phase, still hooking up others, and it runs nicely although when driving coil with more voltage the rpm increase causes too much vibration. I'm hoping its only because the other magnets interacting with the cores are causing this and that when all 3 phases are operating it should be smooth and fast, right now with the 1 phase at 24V it has some pretty good torque and speed though obviously needs all 3 phases to function properly. The only thing I dont have for testing is an rpm meter, so any ideas on how to accurately measure rpm short of buying an expensive meter which is not an option due to funds. i do have an rc model tach., but it suffers interference from the ac light bulb frequencies. Anyway heres a pic of the motor setup.   

Hi Skywatcher123,

Here is a link where you can find some ideas on measuring RPM: http://peswiki.com/index.php/Tools:RPM

Also, if you place your RC model tach into a non-opac long cylinder serving as a shield to block your AC light bulb frequencies and place the opening of this cylinder as near as possible to your rotor, you may still use it?  Maybe you not but I mention this any way...

rgds,  Gyula
Logged

Mk1

  • Hero Member
  • *****
  • Posts: 2068
Re: Pulse Motor ( no work required to remove rotor magnets from cores )
« Reply #16 on: April 26, 2009, 05:06:19 AM »
@all

About one year ago i have found the patent drawing on the kawai magnet motor.

Here some of the pages.
Logged

Mk1

  • Hero Member
  • *****
  • Posts: 2068
Re: Pulse Motor ( no work required to remove rotor magnets from cores )
« Reply #17 on: April 26, 2009, 05:08:57 AM »
Some more!
Logged

Mk1

  • Hero Member
  • *****
  • Posts: 2068
Re: Pulse Motor ( no work required to remove rotor magnets from cores )
« Reply #18 on: April 26, 2009, 05:12:07 AM »
Well there is some more. That is all i could find.
Logged

Mk1

  • Hero Member
  • *****
  • Posts: 2068
Re: Pulse Motor ( no work required to remove rotor magnets from cores )
« Reply #19 on: April 26, 2009, 05:17:15 AM »
@all the patent number is 5436518
Logged

Paul-R

  • Hero Member
  • *****
  • Posts: 2086
Re: Pulse Motor ( no work required to remove rotor magnets from cores )
« Reply #20 on: April 26, 2009, 04:05:43 PM »
Its Kawai, isn't it?
Logged

SkyWatcher123

  • Hero Member
  • *****
  • Posts: 844
Re: Pulse Motor ( no work required to remove rotor magnets from cores )
« Reply #21 on: May 01, 2009, 10:31:50 AM »
Hi folks, just an update. Well with all 3 phases wired on the motor the vibration was still too large in my opinion and since my cores were the same size as the neo magnets it took alot of juice and on time duration to get the magnets off the cores which i expected however i'm now fully convinced the best way to go is either Kawai's motor design or an air core design like Garry Stanley came up with. So i am now building a bigger model of the air-core motor, w/ 12 neo's per rotor and 12 stator coils, since the small one i have now has out performed every other motor i have ever built and its design is simple and circuitry as well so reliability is high. Any thoughts on this new direction are welcome.
peace love light   :)
Logged

SkyWatcher123

  • Hero Member
  • *****
  • Posts: 844
Re: Pulse Motor ( no work required to remove rotor magnets from cores )
« Reply #22 on: May 15, 2009, 01:02:25 AM »
Hi folks, been working on the dual rotor air-core motor and it is finished. Very interesting results so far, compared to the previous dual rotor air-core motor i had built that used four rotors with 6 neo's per rotor and 2 stator plates with 6 coils each for 12 coils total this 12 stator single plate, 12 magnet per rotor motor is performing better than the previous stated motor and with half the current draw and the same voltage. So it appears due to the pulse width on time being less due to the larger rotors this makes the motor more efficient even though the duty cycle is the same, very interesting. I believe Troy reed invented a motor that took advantage of that fact and Joseph Newman does the same with his commutators, many pulses at shorter pulse width's to achieve equal or greater performance with reduced input. Still testing, let me know what you folks think. Heres a few pics.
Logged

Xaverius

  • Sr. Member
  • ****
  • Posts: 266
Re: Pulse Motor ( no work required to remove rotor magnets from cores )
« Reply #23 on: June 09, 2009, 06:29:24 AM »
Nice work, hope you get continuing positive results in the future.
Logged
Pages: 1 [2]   Go Up
« previous next »