This is not the electricity generated by friction, but the current generated by the movement of part of the closed wire cutting the magnetic field lines.
You can look at the principle of a generator. It does not use friction to generate electricity. Friction consumes a lot of kinetic energy to convert it into heat, which is too inefficient. General generators convert various forms of energy into kinetic energy, causing coils to rotate in a magnetic field to generate current.
As for your idea, the simplest is to buy a small hand-cranked generator and then connect it to the wind wheel. Through the mechanical structure, the rotation of the wind wheel drives the hand-cranked generator. to rotate, therefore generate electricity. If it's more complicated, you have to design and build a generator yourself. Because wind power is different and it will cause interferenceences during rotation, as well as the problem of forward and reverse directions, you need to build a series of rectifications. , filtering, voltage stabilization, energy storage, etc. by yourself. A circuit is necessary. This cannot be explained clearly in one or two sentences. To put it simply, part of the closed coil will generate current when breaking the magnetic field lines. . This is the principle of the generator.
Common offshore and onshore wind turbines do not have an elevator inside, only stepladders.
The reason is very simple. The cost of elevators is high, but the utilization rate when used in wind turbines is too low. In addition, wind turbines are the origin of energy-saving products and elevators require large quantities. of electricity. All things considered, there is no particular reason. There will be no elevator.