paper present an improved design of Axial Flux Permanent Magnet (AFPM) synchronous machines using PSO algorithm that consider practical limits. At first sizing equations is provided and 20 kW AFPM machine is designed, and then output power density is improved using PSO More
paper present an improved design of Axial Flux Permanent Magnet (AFPM) synchronous machines using PSO algorithm that consider practical limits. At first sizing equations is provided and 20 kW AFPM machine is designed, and then output power density is improved using PSO algorithm. A comparison between improved designed AFPM machine and a prototype constructed machine is performed. Improved machine has more output power density than constructed machine. Then magnetic flux density is calculated based on Maxwell equations analytically. Analytical results have good agreement with finite element method (FEM) results. Use of analytical method takes much less computational time than FEM dose.
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This paper presents a semi-3D analytical method for calculation of the no-load magnetic flux density in an axial flux permanent-magnet machine. This method is based on a 2-D analytical solution of magnetic field and using modulation function for considering machine’s ra More
This paper presents a semi-3D analytical method for calculation of the no-load magnetic flux density in an axial flux permanent-magnet machine. This method is based on a 2-D analytical solution of magnetic field and using modulation function for considering machine’s radial effect on magnetic field distribution. Modulation function is obtained analytical and by use of airgap and leakage permeances. This analytical method takes much less computational time than 3-D finite element method (FEM) does, and is, thus, useful for designing and optimization purposes. Finally, the accuracy of the presented analytical model is validated by comparing its results to corresponding finite-element analysis.
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In this paper instantaneous electromagnetic torque computation is done for axial flux permanent-magnet brushless DC (BLDC) motor using Lorentz force theorem. In this method, back electro motive force (EMF) and currents of phases should be defined. A novel method is pre More
In this paper instantaneous electromagnetic torque computation is done for axial flux permanent-magnet brushless DC (BLDC) motor using Lorentz force theorem. In this method, back electro motive force (EMF) and currents of phases should be defined. A novel method is presented for calculation of back EMF harmonics using analytical method (AM). The analytical results are compared with results obtained from the finite element method (FEM). A good agreement is between AM and FEM. Computational time in AM is much less than FEM. Finally, for torque ripple reduction, some motor geometric parameters are optimized using AM.
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