Part one of the discussion is about whether the H-Bridge input should be measured in GG's setup. No one other than myself and TK have weighed in on that (AFAIK), but I have made my argument, and as far as I am concerned it is a no-brainer; the input power must be measured after the H-Bridge in this case.
Part two involves the issue of real vs. imaginary power. I posed the question about being able to measure real power from a non-OU device that outputs a sine wave where its current and voltage are precisely 90º out of phase. I believe that you, tinman, and TK have all stated that yes it is possible. ION and myself have stated the contrary. Obviously one side must be correct, and the other not.
I'd be happy to see a simulation supporting your assertion. 
I am in agreement with Poynt with the exceptions noted below, i.e. the H bridge and associated drive circuitry represents a power function generator, and since the DUT is the transformer, to vet just the transformer, we do not need to include the drive circuit power dissipation. Later, in the real world practical system, we could include all losses including drive circuitry i.e if we were claiming OU for a black box system that took pure DC in / DC out. Gunderson's claim is for an OU transformer, not a system, so in my mind that is the first DUT. The synchronous rectification may or may not be included. This depends on whether it's role is simply rectification or some other interaction that helps to produce the claimed OU effect. If the claim is made that the H bridge interacts with the transformer in such a way due to feedback from the transformer to the drive circuitry or the H bridge itself that sustains the OU effect, and that OU effect would not be possible with an equivalent benchtop power function generator, then of course we must include the circuitry including H bridge. Then it becomes an OU system, of which the transformer is one component. Do I understand the question? What are the claims? Perhaps some of the confusion stems from G.G.'s mistitled device "OU Transformer".
« Last Edit: 2016-07-31, 23:43:27 by ION »
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Topic: Graham Gunderson Energy conference High COP demonstration (Read 213398 times)
