Akademik Veri Yönetim Sistemi
6th INTERNATIONAL CONFERENCE ON ADVANCES IN MECHANICAL ENGINEERING, İstanbul, Türkiye, 20 - 22 Kasım 2021, cilt.1, ss.460-469
Nowadays, the rapid decrease in fossil fuel resources required for electricity production in response to the
increasing electricity demand has started to create serious imbalances between supply and demand. In order to continue
energy production and have a sustainable environment, renewable energy sources appear as one of the most rational
solutions. Flywheel energy storage systems are one of these products. Active magnetic bearing systems have started to
be used in many sectors such as aviation, transportation robot systems, and the manufacturing industry. In this study,
a high level of an energy storage system using magnetic bearings to minimize energy consumption was proposed.
Magnetic bearing systems have highly non-linear characteristics and are inherently unstable. Because of those, they
require closed-loop controllers for stable operation. 4-pole hybrid electromagnets are used for levitation in the vertical
direction (z-axis) and 8-pole electromagnets are used for the radial directions (x, y-axes). Radial Magnetic bearings
(RMB) are designed and modeled for the developed 6 DoF system. The upper and lower RMBs of the system were
controlled separately (decentralized control). The air gap I-PD controllers for the vertical axis, which converges
excitation current to nearly zero because of permanent magnets, and for radial axes have been designed and simulation
results were given.