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  • BroMikey
    replied
    Originally posted by thaelin View Post
    Mikey for a bit, thought this was you and was looking forward to a meet and greet. Another time perhaps
    No not me, but yes someday we will.

    Last edited by BroMikey; 07-02-2021, 06:47 AM.

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  • thaelin
    replied
    Will have to chat with him this year. Have a bit of info he might want to hear. Specific one is the gen coils. I need a low rpm type of coil for 18v
    Mikey for a bit, thought this was you and was looking forward to a meet and greet. Another time perhaps

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  • BroMikey
    replied
    Adams motor and the conference

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  • BroMikey
    replied



    Originally posted by Rakarskiy View Post
    Why did you decide that a higher frequency will have a worse induction result?

    It all depends on the design decisions.

    Tesla became disillusioned with alternating current in the late 19th century.
    Tesla took away Edison's Job.

    Can you imagine telling those early inventors we are going to put an IGBT converter of every POLE? We can't keep one working for long now.

    https://www.cet.edu.in/noticefiles/229_HVDC_NOTE.pdf


    Last edited by BroMikey; 07-01-2021, 08:57 PM.

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  • BroMikey
    replied
    Originally posted by Rakarskiy View Post
    If you make single-cycle pulse systems, it is quite possible to solve this problem. For reference: DC transmission lines are gaining popularity

    Nikola Tesla became disillusioned .
    Pulsed DC transmission lines.





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  • BroMikey
    replied
    Originally posted by Rakarskiy View Post
    I am engaged in various systems, one-cycle systems, in my opinion, are the most promising. In Russian textbooks of academic physics, it is clearly stated that the amplification of the current in the vein can occur due to the additional strength of the electric field. it is obvious that this is an external electric field, must have a vortex structure, since the EMF itself is a vortex electric field
    Well that is what I need, your opinion. But I need an example to get me on board. Not many, just a single example. Otherwise I am unsure of your specific ideals.

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  • Rakarskiy
    replied
    I am engaged in various systems, one-cycle systems, in my opinion, are the most promising. In Russian textbooks of academic physics, it is clearly stated that the amplification of the current in the vein can occur due to the additional strength of the electric field. it is obvious that this is an external electric field, must have a vortex structure, since the EMF itself is a vortex electric field

    Leave a comment:


  • BroMikey
    replied
    2nd
    Originally posted by Rakarskiy View Post
    Why did you decide that a higher frequency will have a worse induction result?

    If you make single-cycle pulse systems, it is quite possible to solve this problem.

    Nikola Tesla became disillusioned with alternating current .
    Yes please, solve.

    That is a very interesting statement. Yes these motor generators ARE high frequency converters operating at 1000hz up to 1500hz." 2nd generation laminate coating magnet wire is better for skin effect". IS there another way to collect more EMI?? Some say this acts like an antenna? I need to think about this.

    Last edited by BroMikey; 06-29-2021, 10:11 PM.

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  • Rakarskiy
    replied
    Why did you decide that a higher frequency will have a worse induction result?
    It all depends on the design decisions. It's just that at high frequencies, the reactance arising in the conductor is greater. Also, the current carrying capacity of the copper conductor is lower at higher frequencies. This is very important for AC induction. If you make single-cycle pulse systems, it is quite possible to solve this problem. For reference: DC transmission lines are gaining popularity in the power industry. Converters for them are designed up to 300 kHz. The alternating current is simply constructive, but limited in frequency. Nikola Tesla became disillusioned with alternating current in the late 19th century.
    Last edited by Rakarskiy; 06-29-2021, 05:16 AM.

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  • BroMikey
    replied
    Thanks Rak........... great post of information. I was thinking RMS shows that the peak to peak would be higher at a higher frequency and the RMS. I am seeing 7X times the handling capacity from 60hz to 400hz. Can you explain why 1000hz is the same or less power than ac is produces at 60Hz or how can we explain? Some say 1500hz the size of a basket ball would need a 60hz generator the size of a shopping cart.

    But how to look at it all, I need help explaining how much power. Like a pass transformer in a switch-mode supply the Toroid runs on 3000hz -16k and is the size of a golf ball@ 500watts.

    RMS for 1.5khz is higher peak to peak so when rectified to dc is more power? Or would you say 60hz is more power?

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  • Rakarskiy
    replied
    The generator phase frequency is an indicator of the rate of change of the magnetic flux (magnetic induction). At a higher frequency, a lower Magnetic Induction (for example) can be used. Roughly speaking, the power output of an electric generator is based on two formulas: electromotive force e = BLV and amperage for a complete circuit I = e/R+r.


    https://en.wikipedia.org/wiki/Flux_switching_alternator
    image013.gif
    Here is an explanation why this technology of the simplest machine from Germany (1945) in the USA and Russia is used only for military purposes.

    https://www.flynnresearch.net/milita...%20Defense.htm
    Last edited by Rakarskiy; 06-28-2021, 06:33 PM.

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  • dragon
    replied
    Originally posted by Quantum_well View Post
    The reason for 400hz in an aircraft situation is indeed more power per given volume of machine. However it's of no use for longer transmission lines due to increased losses, that's why 50/60hz is used.
    Your Absolutely right, all I'm saying is frequency really doesn't play a huge role in the overall efficiency of a device. The alternator shown above could be wound with 1/2 the turns and double the rpm to achieve the same outcome at the same efficiency. We've reduced the amount of copper and saved some weight which is important in aviation but haven't changed the efficiency. Thus doesn't have anything to do with the claims of energy in excess of the input.

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  • Quantum_well
    replied
    The reason for 400hz in an aircraft situation is indeed more power per given volume of machine. However it's of no use for longer transmission lines due to increased losses, that's why 50/60hz is used.

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  • dragon
    replied
    Originally posted by BroMikey View Post

    The point is there is little being said about conversion. A converter going from 115v 60hz input to a 400hz 115v output is 10 lbs for 500watt box. Guess how much it weights going the opposite direction? 4 lbs now that being said what results will be shown at 1500hz? People don't talk about this and no one knows. The only thing everyone says it to rectify and turn it into DC (as I have said) we have alot to learn. Wave forms with higher frequencies give off more steady state DC power than a 60 hz. More means more 5-10X
    Efficiency of a machine isn't measured in Hz - granted running at higher frequencies simply means a smaller amount of energy per sample is produced to make up the whole in a given time period, 1 watt is 1 watt no matter how it is produced in the end. The efficiency at which it is produced is basically within the design itself. The whole Hz thing seems like a diversion to side step the overall discussion of what the mechanism is that produces energy in excess of the input.

    I designed a 3 phase alternator back in 2004 that produces 500 watts at 1100 rpm and weighs 3.5 lbs, fits in your hand. A radial air core. Extremely efficient little unit. Still have the prototype which has been used in many different tests over the years.
    Attached Files
    Last edited by dragon; 06-28-2021, 03:35 PM.

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  • BroMikey
    replied
    Originally posted by bistander View Post

    That's pretty dumb. You saturate like crazy. Now. Take the 60Hz 115V motor and run it at 400Hz 760V. Kinda like the Tesla EV motors.
    bi
    The point is there is little being said about conversion. A converter going from 115v 60hz input to a 400hz 115v output is 10 lbs for 500watt box. Guess how much it weights going the opposite direction? 4 lbs now that being said what results will be shown at 1500hz? People don't talk about this and no one knows. The only thing everyone says it to rectify and turn it into DC (as I have said) we have alot to learn. Wave forms with higher frequencies give off more steady state DC power than a 60 hz. More means more 5-10X

    Leave a comment:

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