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Axial-flux permanent-magnet generators have been developed in the last few years, because of a good ratio of power to weight and low cost. References [1], [2] showed that axial-flux slotted machines have a smaller volume for a given power rating than radial-flux machines, and that two-sided axial-flux configuration is superior to one-sided axial-flux configuration. Optimal design of axial-flux permanent-magnet...
The characteristics of the torque and vibration of interior permanent magnet synchronous motor are affected by the shape and location of permanent magnets in the rotor. This paper proposes the optimization method with response surface methodology considering the vibration acceleration as well as the average torque and torque ripple. In the case of consideration of the average torque, the torque is...
Exploitation of the renewable energy is expected one of the most effective expedient to reduce of green house gas emissions, principally CO2. In this context, small-sized hydraulic power generation is considered one effective method because of its potential energy amount. However, mechanical bearing which support the rotor shaft causes rotational loss and durability limitation. For the purpose of...
Lead batteries are used mainly for energy storage. However, they are using chemicals and heavy materials, which will affect to environment badly. Therefore, clean energy storage systems are under development using magnetic bearing. However, eddy current causes serious rotational loss for energy storage. Therefore, Lorentz force type magnetic bearing is proposed. Rotational losses are expected to be...
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