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http://dx.doi.org/10.5370/KIEE.2011.60.5.955

Analysis and Design of high-efficiency Permanent Magnet Synchronous Motor/Generator for Renewable Energy Application  

You, Dae-Joon (충남도립청양대학 소방안전관리과)
Kim, Il-Jung (호서대학교 기계공학과)
Publication Information
The Transactions of The Korean Institute of Electrical Engineers / v.60, no.5, 2011 , pp. 955-964 More about this Journal
Abstract
In renewable energy system such as flywheel energy storage system, wind power and solar power, the motor/generator is the important key for offering the electric energy to the electric loads. For example, the heavy and large flywheel is rotated by electromagnetic torque of pemanent magnet synchronous motor (PMSM) and, in case of a breakdown of electric current, the PMSM used as generator supplies electric energy for the various electric utilities using mechanical rotation energy of the flywheel. Thus, design of a motor/generator should be performed in effort to reduce cogging torque and electromagnetic loss for high efficiency. In our paper, a slotless permanent magnet synchronous motor/generator (SPMSM/G) with output power 15kW at the rotor speed 18000rpm is designed from electromagnetic analysis and dynamic performance analysis. In analytical approach, design parameters such as back electro-motive force (back EMF), inductance and electromagnetic torque are derived from analytical method which is one of the electromagnetic analysis method. And using the design parameters, this paper deal with system design considering the driving characteristics and electric load in required power. Finally, the analytical results are verified by the experiment and finite element method (FEM).
Keywords
High efficiency motor/generator; Magnetic field analysis; Design parameters; Slotless;
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