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This paper presents a practical design approach of a transverse flux (TF) linear synchronous motor. It is useful in the selection of appropriate volume as a starting point of the thrust requirement design to achieve compact size, small mover weight, high efficiency, and low material cost during the preliminary design stage. First, the concept of the proposed design approach is described. Second, the volume design of a double-sided TF (DSTF) permanent magnet linear synchronous motor (PMLSM) proposed in a previous work is conducted. Finally, based on the experimental results of the prototype model, the feasibility of the proposed design approach is verified by comparing the performance of the DSTF-PMLSM designed using the volume obtained by the proposed design approach with that of the other recent proposals. [ABSTRACT FROM PUBLISHER]

Cogging forces result in thrust ripples and noise, which result in poor positioning accuracy. For that reason, cogging force reduction is one of the most important factors to be considered in the design of permanent magnet linear synchronous motors (PMLSMs) with core type topologies. Many methods have been reported regarding the reduction of the cogging force in PMLSMs. However, since they usually could cause a large decrease of thrust, it is important to select an appropriate method for cogging force reduction by considering a tradeoff relationship between large thrust and small cogging force. This paper presents the design for cogging force reduction of a double-sided transverse flux permanent magnet linear synchronous motor. Several methods including chamfering, skewing, and magnet pole shifting are applied for cogging force reduction. Finally, the design results are analyzed and experimentally validated by the prototype model. [ABSTRACT FROM AUTHOR]

This paper presents the design and analysis of a transverse-flux-type cylindrical linear synchronous motor using generic armature cores for rotary machinery that can address the problem of complex structures in conventional transverse-fluxtype topologies. First, the operational principle and structural advantages of the proposed model are explained. The thrust density and cogging force are investigated during the initial design stage using an application in which large thrust density and low cogging force are required. The proposed model is both theoretically and numerically designed by using a magnetic-circuit method and a 3-D finite-element method, respectively. Finally, the results and efficacy of our structural concept are experimentally validated. [ABSTRACT FROM PUBLISHER]

We propose a double-sided, transverse flux linear synchronous motor to address the problem of the complex structure of transverse-flux machinery. A design method for maximum thrust in a nonsaturation region is then proposed as a simplified approach. Finally, the usefulness of the proposed method are analyzed and evaluated by using a 3-D finite element method. [ABSTRACT FROM AUTHOR]

Fully integrated electric propulsion systems are gaining popularity in both commercial and military sectors. Propulsion motor manufacturers are investigating new direct-drive solutions for use in electric ships. These applications require motors with high torque output at low speeds. Such requirements were the motivation for the design of a new permanent-magnet synchronous motor (PMSM) with a novel topology. This paper describes the efficient mathematical model used to optimize our PMSM design. Based on a simplified theoretical model for the motor's behavior, we were able to quickly and accurately predict torque output. The minimalist design of this transverse flux machine is shown to be advantageous for computer simulation and machine manufacturing. Initial results from a prototype are included and discussed. Future plans for the prototype are outlined. [ABSTRACT FROM AUTHOR]