Ji Bin Zou

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This paper presents the analysis and minimization of cogging force in a tubular transverse flux linear machine (TTFLM) with permanent magnet excitation developed for direct drive applications. The influence of leading design parameters on the cogging force is revealed, and verified by 3-dimensional finite element computations. It is shown that for the(More)
This paper presents a permanent magnet (PM) slotted limited-angle torque motor (LATM) with special tooth-tip structure for torque performance improvement. A magnetic equivalent circuit (MEC) for the PM slotted LATMs is obtained and implemented in the design process. Then, finite element method (FEM) is employed to validate the design equations and to(More)
This paper analyzes the cogging torque mechanism of the hybrid excitation flux switching motor. The finite element analysis (FEA) is used to study different cogging torque suppression methods of the motor. These methods include rotor skewing, variable tooth width, auxiliary slot, variable rotor arcs. By comparing these methods, we can say that rotor skewing(More)
This paper presents a permanent magnet (PM) slotless limited-angle torque motor (LATM) with a moving coil for optical scanning system, which possesses the characteristic of both linearizing torque versus rotor position angle and rapid dynamic response. A magnetic equivalent circuit (MEC) for the proposed LATM is derived and implemented in the design process(More)
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