Physics Thursday, May 21, 2009. Post by natanw
The Perepiteia generator is demonstrated in a test setup driven by a motor taken from a Ryobi bench grinder. The acceleration behavior of the system as a whole can be explained entirely by the behavior of the grinder’s induction motor. Meanwhile the hypothesis that back-EMF is being managed in a novel way is disproved.
In the demonstration videos for the Perepiteia, the audience’s attention is directed to the Perepiteia generator, which causes even knowledgeable people to not pay attention to the grinder motor’s contribution to the observed phenomena. This focus is a problem. A bench grinder is a load that requires very little starting torque, which leads to Ryobi’s selection of a single-phase induction motor with characteristics appropriate to that application. In order to explain the behavior of the joined induction motor – Perepiteia machine “system”, it is essential to pay attention to the grinder motor.
The first requirement is an understanding of the behavior of induction motors in general. You can find out more about Weissman’s explanation in a PDF report here.
The discussion on this post has now become cyclical and so I have disabled comments. I doubt there will be a resolution to this debate. In the meanwhile, interested readers might like to follow-up the Steorn story and see how that ended..
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