Optimum Design of TFLM with Constraint to Maximize Thrust Force, Minimize Detent Force for Weight Reduction Using Characteristic Function
This paper presents optimum design of transverse flux linear motor(TFLM) for household electric refrigerator. We use a characteristic function, table of orthogonal array and three-dimensional equivalent magnetic circuit network (EMCN) method to explain correlations between the objective function and design variables, maximize thrust force and minimize detent force for weight reduction. This paper procedure is validated by the comparison between experimental and calculation results
Analytical design and analysis procedure for a transverse flux machine
A transverse flux machine (TFM) offers a higher specific torque and power density than a conventional radial flux machine, though at a cost of a poorer power factor. This paper provides an analytical approach to dimension an application-specific TFM and analyse its performance for first order calculations. Important features of TFMs are also outlined to facilitate an understanding of its operation and design. The design is explained with reference to an arbitrarily chosen application; a TFM wind generator. Only a surface mounted, single sided, outer rotor TFM generator design is treated. The method can however be equally applied to other types of TFMs, with proper adjustments of the analytical models.
An Approach to Sizing High Power Density TFPM Intended for Hybrid Bus Electric Propulsion
New developments in electric machine topologies have highlighted the possibilities to make great improvements in propulsion applications. Of particular interest are hybrid buses which are expected to be introduced in the near future with a large scale, in city transportation networks, in an attempt to reduce air pollution and noise. For such application, transverse flux permanent magnet machine (TFPM)-based electric propulsion system is presently considered to be the most suitable design in so far as it exhibits the higher power production potential. This paper presents a sizing approach of two major TFPM topologies intended for hybrid bus electric propulsion. At first glance, it is quite commonly believed that an optimal design could be reached through a 3D finite element analysis. Nevertheless, and given the large number of degrees of freedom in design, finite element analysis would take a very long computation time and would not necessarily lead to optimal solutions. It has been found that analytical developments combined with numerical optimizations represent an interesting approach which offers an effective basis to TFPM sizing.