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This paper mainly focuses on the optimization of rotor structures of permanent magnet (PM) motor. It combines global optimization method with the finite-element computation and the response surface model for solving the single-objective optimization for the motor structure. By varying the design parameters of a general pattern of rotor topologies, it is capable of simulating for different types of...
In this paper, a new topological design of permanent magnet (PM) motor with Halbach magnet is introduced and investigated. To better evaluate the performance of different types of motors, a novel approach for the design optimization based on an improved Tabu search algorithm and finite element method (FEM) is proposed. The improvements include a normalized step vector for different search spaces,...
This paper presents a novel hybrid-flux magnetic gear, which integrates a transverse-flux magnetic gear and an axial-flux magnetic gear into a single unit. Compared to its conventional counterparts, the proposed magnetic gear transmits a relatively high torque density. When compared to the transverse-flux magnetic gear, this new structure employs an extra iron segment between the low-speed rotor and...
A novel structure of VPM machine is presented as an effective option for high torque density direct-driven applications. The novel machine has PMs on both sides of rotor and stator. The PMs on the stator are designed as cylinder and can be rotated by an external driven system. Field can be regulated by the rotation of stator PMs. The structure and operation principle are introduced and the performance...
Torque-speed characteristics are very important properties for the electric motors. With these characteristics, the relationship between power, torque, speeds, load can be determined. Finite element method (FEM) is a very accurate numerical method to calculate the steady and transient performance of electric machines [1-3].
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