Abstract
In this study, the characteristic analysis of a permanent magnet synchronous generator was performed using the analytical method, and the validity of the analytical method was compared with that of the finite element method (FEM). For the initial design, the rotor size was selected using the torque per rotor volume method, and the stator size was selected according to the saturation of the stator iron core. In addition, fast Fourier transform analysis was performed to determine the appropriate magnet thickness point, and it was confirmed that the open circuit and armature reaction magnetic flux densities were consistent with the FEM analysis results. Based on the analytical method, the generator circuit constants (phase resistance, back EMF, and inductance) were derived to construct an equivalent circuit. By applying the equivalent circuit method to the derived circuit constants, the accuracy of the equivalent circuit method was confirmed by comparing the FEM and experimental results.
Highlights
Permanent magnet synchronous generators (PMSGs) are increasingly used in various applications owing to their high efficiency and high torque-to-volume ratio [1,2]
Electromagnetic analysis is essential to understand the characteristics of PMSG, and the prediction of the magnetic field distribution is crucial
An analytical method for calculating the governing equation using the subdomain method is shown in [3,4,5,6,7,8,9,10], a simplified magnetic equivalent circuit method based on the analytical method is shown in [11,12], and the finite element method (FEM) using numerical analysis is shown in [13,14,15,16,17,18,19]
Summary
Permanent magnet synchronous generators (PMSGs) are increasingly used in various applications owing to their high efficiency and high torque-to-volume ratio [1,2]. It is necessary to calculate the undefined coefficient by setting the boundary condition according to the machine shape. This method has an advantage over FEM in cases involving various design parameters. The magnetic field characteristics of the open circuit of and reactions mature reactions were using the subdomain elucidate on the design were calculated using thecalculated subdomain method to elucidatemethod on the to design parameters. The equivalent circuit method was applied using the derived usingconstants, the derived constants, and the FEM and experimental results compared.
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