Dedeleco is right.
No, not me, it is Faraday and Ohm, and many others, which are right, because the scientific theory, is a summary or synthesis, of thousands of reproducible researches and works, and not of the dream at all !!
It is necessary to make the converter or switching power supply transforming the very variable voltage of the wind turbine, from 2V to 100V and more, into a roughly constant voltage like that of a photovoltaic panel.
The usual switching power supply transforms a fairly stable voltage, such as 220V into another very stable voltage, such as 12V, 5V or 18V, as for the PC power supply, and you have to make one that accepts any voltage at the input. , to give a voltage output of about 24V (for example) with little stability (to a few volts), which is quite easy, but not at all common among power manufacturers!
GTI or other machines for wind turbines do not fulfill these conditions, with detailed and clear specifications (none of valid) and therefore are perfectly unable to pull the mppt of a wind turbine a little whimsical, like the wind!
A switching power supply is only a switch, transistor, and a self-coil, as for a car ignition, with some capacitors and filter coils.
