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Hmmm.

Sound interesting..so lets consider it..

My analysis considered only one half cycle worth of energy, with energy storage during the bulk of the half cycle, and possibliy a seebeck return at the end of the cycle, before zero crossing..I assume that would be an opposite polarity return.

Then, after zero crossing, the same occurs in the opposite direction..I'm not thinking that energy is stored on one half cycle then returned on the next....I'm been talking about the entire storage mechanism being empty after each half cycle.

Your scenario is plausible if all the peltier converted storage is converted back..But, the peltier efficiency is maximum with zero temp differential, while seebeck has the worst at that time, so it can't be full return..In fact, as I said, seebeck can only work when the current slew rate is faster than the thermal gradient can move.

So, if there is a seebeck return, it is a pulse just prior to zero crossing, then an opposite polarity pulse near the end of the negative half cycle.

Since the energy transfer function probably won't be sine in shape, I can't guess the overall spectra..But, seebeck return would be like a haversine type ac wave, equally spaced opposite polarity pulses..

My question from before was..does this type of train have a spectra like what is being seen?

Oh and btw...excellent thinking..it certainly did make sense..

Cheers, John

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