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I watched the Ishmael Aviso videos last evening, including the DOE test, and here's some comments.
1) First I want to say that Ismael is NOT a con-artist or anything of that sort, and he lives in quite poor conditions over there in the Philippines.
2) One of the DOE guys that comments in the video made me realize that this sytem is just like I've been saying before, a very efficient system that extracts the energy from the battery efficiently and not loading it down directly with high amps.
3) Aviso himself says that he uses a PWM system, which is what is done in motor control, so this is nothing new. PWM DC motor control has been around for decades.
4) On a level surface, moving from point A to point B requires very little energy dissipation or loss, mainly because of friction, but if this is reduced, one can travel around the globe a few times ON ONE 12 V BATTERY. The problem we have in this country is that we want to move FAST, and air friction playes a big role in draining our batteries, but if we went slow, like he does in the streets of Manila, or where ever he is at, he can do pretty well.
5) Energy is needed to accelerate, and then needs to be recovered when braking, so that the only net loss of energy is from friction and other inefficiencies like those of the converter. To accelerate at a decent velocity, you need lots of power, and obviously one 12 V battery will not provide that, so in the video we see he has a super capacitor. That's what it's for, to provide that burst of energy needed for decent acceleration and then perhaps to take in the flyback on breaking.
6) In the video he has a bank of blue capacitors that he keeps discharging, these are charged with the kickback from the coils each time a pulse disconnects. This is one way to deal with kickback, but another practical way is to place a free wheeling diode on the coil, which is what most motor applications do, from what I've seen. But it sure is more impressive to show how much voltage builds up, not that he's doing it for the show, don't get me wrong.
7) In the DOD video the system is different than in the first videos, and we don't see that "antenna" he has on top, and there is no mention of it either. I think he realized that he is not actually pulling energy from the cell towers, since by just looking at the antenna I can tell it's not a 1 GHz antenna, but more like a 1 MHz resonant coil, if that all it was. But I am intrigued by the concept of using the kickback to couple with some external signal, hopefully IN-PHASE, so that more energy can be received. I think that concept has meritt, but most likely he is just recycling the energy comming back from his motor, that's all. That's why he redesigned the system and eliminated the "antenna".
I have to say I'm thinking to develop an electric car system because gas prices are only going to get worse with time. Putting around town is perfect for an electric vehicle that recycles the charge very efficiently. I can drive around for months on flat level roads on one battery charge, if I use super capacitors to give me good acceleration and efficient breaking.
EM
P.S. Here's a basic schematic for his system from what I saw in the video. Nothing special besides the use of a super capacitor to provide for decent acceleration when needed.
« Last Edit: 2011-03-08, 19:40:14 by EMdevices »
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Topic: The Death of the Lenz Law (Read 170308 times)
