Tsygankova G. Electromagnetic Field of Rotating Disk-Shaped Electrically Conductive Bodies in Electrodynamic Devices.

The оbject of research: magnetic systems of the disc-shaped electrodynamic devices. The purpose of research: improving analytical methods for calculating electromagnetic fields of rotating disc-shaped electrically conductive bodies, with regard to the rack-and-slot geometry of the magnetic system to ensure necessary magnetic field inhomogeneity at which the highest value of the working magnetic induction and torques of the electrodynamic forces is achieved. Methods of research: methods of the theory of electromagnetic field, methods of mathematical physics, Fourier method for solving boundary value problems, theory of differential and integral equations, complex variable function theory, modern methods of experimental studies. Theoretical and practical results and innovations: the paper provides analytical expressions for the magnetic field strength in the uneven air space, which allow us to explore the dependence of the magnetic system on geometrical performance characteristics. To assess the functionality of the resulting model, the impact of the tooth-slot ratio on the deformation of the magnetic field by the criterion of maximum magnetic induction was analyzed. The mathematical model for the problem of a distribution of the electromagnetic field in the electrically conductive body, which is rotating in the uneven air gap, by replacing it with an even gap with equivalent surface currents, as well as the analytical solution of this problem were received. Based on the energy approach to the resulting solution relative to the current density, a new expression for the electromagnetic torque was found, that makes it possible to further improve the methods of design. A subject degree of introduction: results of the thesis introduced in the GP Research Institute "Квант" (Kiev) to develop a measurer of torque with a disk-shaped rotor "Моментомер ПЗ-ИУС-02". Effectiveness of implantation: improve the methods of designing electrodynamic brake. Sphere of use: in educational, design, research and industrial institutions of electrotechnical section.