In previous articles, we found that industrial-scale storage of electricity is a huge challenge for the global energy sector. The solution to this problem will allow to obtain economic benefits, contribute to the creation of a favorable environmental situation, optimize the consumption of natural resources, etc.
Some kind of criteria were proposed that (ideally) should be met by
The coils of the toroidal field of the superconductor Nb3Sn have a mass of
Based on the foregoing, in order to save and accumulate electricity, it is required to convert it into another type of energy. Most efficiently, in comparison with other methods, this can be done by converting electrical energy into kinetic energy, and vice versa. Here we will have both high efficiency and high reliability. Moreover, the overwhelming share of electricity production in the world is precisely the conversion of kinetic energy into electrical energy (steam turbines, hydroelectric units, wind generators, etc.)
The type of energy conversion of our
According to the global energy storage database, on
The most suitable, efficient of the existing technologies for converting kinetic energy into electrical energy is based on the technology
However, modern flywheel storage devices have a number of fundamental drawbacks that do not allow the massive implementation of such energy storage technology. The main disadvantages are the high wear of the bearing assembly, and, consequently, a short service life, and high self-discharge.
An attempt was made to solve the first problem by using active magnetic bearings (electromagnetic stabilization) in flywheel drives. But the solution to the self-discharge problem revealed a new unsolved problem — it is the active power supply of the bearing unit, coupled with cooling (often active, less often passive), which further complicated the introduction of flywheel drives.
The problem with the flywheel suspension gives rise to other problems: the impossibility of scaling in the required criteria
However, let us assume that this type of suspension has been designed, which has the advantage of mechanical bearings that do not require additional energy and cooling for operation, and an electromagnetic suspension that does not have friction in the bearing assembly and has a long service life. A flywheel drive with such a suspension will be as autonomous and self-sufficient as possible.
Will he fit in this performance for the role
In the next article we will analyze the possibility of creating such a suspension based on modern technologies and materials:
P. S. Links to sources are now in
Additional materials for detailed acquaintance with the topic: