Title :
Design and FEM analysis of a flywheel energy storage system assisted by integrated magnetic bearings
Author :
Zhang, C. ; Tseng, K.J.
Author_Institution :
Center for Adv. Power Electron., Nanyang Technol. Univ., Singapore
Abstract :
This paper presents a compact and novel flywheel energy storage system. The flywheel acts as the rotor of the drive system and is sandwiched between two disk type stators. Concepts of magnetic levitation and axial-flux PM synchronous machine are incorporated to assist the rotor-flywheel to spin and remain in magnetic suspension in the gravitational axis. Three-dimensional finite element method is applied for studying the flux linkage, induced voltage, levitation force and rotational torque of the system. The analysis results support the feasibility of the proposed system.
Keywords :
finite element analysis; flywheels; magnetic bearings; magnetic levitation; rotors; stators; synchronous motors; torque; FEM analysis; axial-flux PM synchronous machine; flux linkage; flywheel energy storage system; gravitational axis; induced voltage; integrated magnetic bearing; levitation force; magnetic levitation; magnetic suspension; rotational torque; stator; three-dimensional finite element method; Couplings; Drives; Energy storage; Finite element methods; Flywheels; Magnetic analysis; Magnetic levitation; Stators; Synchronous machines; Voltage;
Conference_Titel :
Industrial Electronics Society, 2004. IECON 2004. 30th Annual Conference of IEEE
Print_ISBN :
0-7803-8730-9
DOI :
10.1109/IECON.2004.1431826
