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An analytical method for calculating the magnetic field of a magnetoelectric valve motor is considered based on the division of its active region into a set of geometrically homogeneous sheets, at the boundaries of which the conditions for conjugating their magnetic fields are met: scalar magnetic potentials and normal components of magnetic induction do not undergo a jump (break). As sources of the magnetic field, in addition to permanent magnets and currents of the stator winding, the magnetization of ferromagnetic sections of its magnetic circuit is provided. When using the Fourier method of separation of variables, the conjugation conditions will be reduced to solving a system of linear equations to find the corresponding constants. The solution of the system of parametric equations describing the design scheme of the inductor of a slotless magnetoelectric valve motor is given, in general terms using the Maxima analytical (symbolic) calculation package. The solution obtained makes it possible to use the results to describe the magnetic potentials and inductions of valve motors of various design geometries.

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A magnetic gearbox with a three-phase stator winding, powered by a static frequency converter with a sinusoidal current, which is in phase or in antiphase with the EMF of the idling winding, will have in this mode the maximum values ​​of the electromagnetic moments of the shafts proportional to the stator current. Such a gearbox will have no “overturning” of the rotors as long as the frequency converter is able to increase its current with increasing load. The electromagnetic moments of the rotors of the magnetic gear are a consequence of the presence of the electromagnetic moment of the stator. The electromagnetic moments of the rotors are rigidly related to the electromagnetic moment of the stator through constant coefficients. A mathematical model of an adjustable magnetic gearbox with a three-phase stator winding and the results of modeling a dynamic system are presented. Offers the structure of the output shaft speed stabilization system, such as a wind turbine. The introduction of the main research results is illustrated.