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Thread: Can a motor run without experiencing back EMF? - Steorn Orbo

  1. #1 Can a motor run without experiencing back EMF? - Steorn Orbo 
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    Hi,

    In the following video some folks are claiming they have built a motor that does not experience back EMF. They seem to provide some evidence of their claim because their scope traces show that current and voltage in their system do not change under load.

    What do all of you think about this setup?

    Introduction to an Orbo Electromagnetic Interaction - Part 1

    LINK DELETED


     

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  3. #2 Re: Can a motor run without experiencing back EMF? - Steorn 
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    Quote Originally Posted by lasergun
    Hi,

    In the following video some folks are claiming they have built a motor that does not experience back EMF. They seem to provide some evidence of their claim because their scope traces show that current and voltage in their system do not change under load.

    What do all of you think about this setup?

    Introduction to an Orbo Electromagnetic Interaction - Part 1

    http://www.youtube.com/watch?v=S5nae_I_Mus
    I find absolutely nothing that is surprising.

    This thing is basically a standard DC motor with commutation provided electronically. No big deal.

    The field excitation is being controlled electronically with feedback, and behaves as one would expect. Of course there is a back EMF, which must occur simply because you are moving magnets near coils and that time-varying magnetic field will induce an electromotive force, which is compensated by the feedback electronics.

    Apparently the speaker flunked freshman physics, snce his statement that all input energy is dissipatged as heat and additional energy is recoverable as work from the motor violates conservation of energy. What is true is that when the motor is unloaded all of the input energy is converted to heat -- and this is true of any motor, electric or otherwise.

    If you are considering investing in this company, my personal opinion is to go with something more likely to succeed, like putting your money into Las Vegas slot machines.


     

  4. #3  
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    These guys are still at it? They had a demonstration in 2007 that failed spectacularly. I guess they think there has been enough time that people have forgotten that.
    http://www.engadget.com/2007/07/04/s...ated-tomorrow/
     

  5. #4 Re: Can a motor run without experiencing back EMF? - Steorn 
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    Quote Originally Posted by DrRocket
    Quote Originally Posted by lasergun
    Hi,

    In the following video some folks are claiming they have built a motor that does not experience back EMF. They seem to provide some evidence of their claim because their scope traces show that current and voltage in their system do not change under load.

    What do all of you think about this setup?

    Introduction to an Orbo Electromagnetic Interaction - Part 1

    http://www.youtube.com/watch?v=S5nae_I_Mus
    I find absolutely nothing that is surprising.

    This thing is basically a standard DC motor with commutation provided electronically. No big deal.

    The field excitation is being controlled electronically with feedback, and behaves as one would expect. Of course there is a back EMF, which must occur simply because you are moving magnets near coils and that time-varying magnetic field will induce an electromotive force, which is compensated by the feedback electronics.

    Apparently the speaker flunked freshman physics, snce his statement that all input energy is dissipatged as heat and additional energy is recoverable as work from the motor violates conservation of energy. What is true is that when the motor is unloaded all of the input energy is converted to heat -- and this is true of any motor, electric or otherwise.

    If you are considering investing in this company, my personal opinion is to go with something more likely to succeed, like putting your money into Las Vegas slot machines.
    So you are saying they are faking their current/voltage traces and they are really changing as the system speeds up or decelerates?
     

  6. #5 Re: Can a motor run without experiencing back EMF? - Steorn 
    . DrRocket's Avatar
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    Quote Originally Posted by lasergun

    So you are saying they are faking their current/voltage traces and they are really changing as the system speeds up or decelerates?
    No, I am saying that the traces are likely controlled by the feedback system that controls the coil excitations and that covers up the back EMF.

    What they have is basically a brushless DC motor. That is nothing new, It does not violate conservation of energy and IMO their claim to have violated that principle is bunk.
     

  7. #6  
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    What do all of you think about the latest video Steorn has posted?

    It seems to confirm their system does not experience back EMF.

    It also shows they get an inductance "gain."

    Steorn's Orbo Electromagnetic Interaction COP is greater than 1. Part 1 of 5

    LINK DELETED

    Any thoughts?
     

  8. #7  
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    Two more videos have been added to Steorn's Youtube site.

    Steorn Orbo - Proving Overunity 1/2

    LINK DELETED

    Steorn Orbo - Proving Overunity 2/2

    LINK DELETED

    The evidence is becoming more and more compelling.
     

  9. #8  
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    No it really isn't. Scientific evidence is not published on YouTube. The capacity for falsification, fraud, confirmation bias, undisclosed conflicts of interest, non-reproducible methodology and countless other problems is practically endless. Scientific evidence is published in peer-reviewed scientific journals with full and detailed disclosure.

    I suspect that you're not actually interested in discussion of Steorn or these videos. You're ignoring counter arguments and spamming their propaganda videos. So this discussion is over. I'm going to delete your links- all of them- and I'm locking this thread. If you wish to appeal this, please PM me or an Admin or create a thread on the Site Feedback forum.
     

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