Title :
A diamagnetically stabilized magnetically levitated flywheel battery
Author :
Sabihuddin, S. ; Kiprakis, A. ; Mueller, Matthias
Author_Institution :
Inst. for Energy Syst., Univ. of Edinburgh, Edinburgh, UK
Abstract :
Flywheel energy storage (FES) provides high density storage. Traditional systems relied on mechanical bearings. Bearings can be replaced by electromagnetic variations. Modern FES systems levitate inertial mass on electromagnetic cushions. Levitation consumes energy, so FES systems are confined to short-term power quality applications. An FES system that uses passive levitation is presented. Passive systems consume no energy. Utilizing diamagnetic materials, it´s possible to stabilize unstable levitation. A vacuum-enclosed switched reluctance electric machine (SRM) designed around this stabilized levitation is proposed. The reduced friction and energy consumption is expected to extend the range of FES systems from short-term to medium-term storage applications.
Keywords :
diamagnetic materials; electromagnetic devices; energy consumption; flywheels; machine bearings; magnetic levitation; power supply quality; reluctance machines; stability; FES; SRM; diamagnetic material; diamagnetically stabilized magnetically levitated flywheel battery; electromagnetic cushion; electromagnetic variation; energy consumption; flywheel energy storage; friction reduction; inertial mass levitation; mechanical bearing; medium-term storage application; passive levitation; short-term power quality application; short-term storage application; unstable levitation stability; vacuum-enclosed switched reluctance electric machine; Damping; Flywheels; Magnetic fields; Magnetic levitation; Reluctance motors; FES; bearing; diamagnet; energy; flywheel; levitation; magnetic; passive; reluctance; storage;
Conference_Titel :
Ecological Vehicles and Renewable Energies (EVER), 2013 8th International Conference and Exhibition on
Conference_Location :
Monte Carlo
Print_ISBN :
978-1-4673-5269-7
DOI :
10.1109/EVER.2013.6521621
