Обґрунтування параметрів магнітної системи дугостаторного індукторного вітроелектричного генератора з кільцевим ротором

Abstract

SUBSTANTIATION OF MAGNET SISTEM PARAMETRS OF ARC-STATOR GENERATOR WITH RIN ROTOR FOUR WIND TURBINE

V.V. Kozirsky, M.I. Tregub, A.V. Petrenko, O.S. Vasilenko

For wind turbine generators, inductive electric machines (IEMs) are considered one of the most simple and reliable types due to the absence of any functional parts on the rotor except for the toothed magnetic circuit. However, so far little attention has been paid to the methods of calculating magnetic systems of dual-stator inductor generators with a circular rotor, in which the rotor-link of the magnetic circuit has no back, but differs considerably from the spatial configuration from the traditional, therefore the substantiation of the methods for determining the optimal geometric parameters of such magnetic systems is an urgent task.

The purpose of the research is to substantiate the methods of determining the optimal geometric parameters of magnetic systems of non-contact dual-shaped IEM circular rotors, which are widely used in various spheres, in particular, in non-transmissions wind turbines.

The research was carried out by theoretical and experimental methods. The method of theoretical research was to construct a sketch model of the elementary functional link of the electromagnetic system and the theoretical analysis of magnetic conductivity in static positions of the maxima and minima of the values of magnetic conductivity.

Methods of calculation of traditional types of induction electric machines are adapted for the calculation of new arc-stator inductor generators with a circular rotor, which are used in trans-free-energy wind turbine generators. A sketch diagram of the elementary magnetic circuit of the electromechanical system and a spatial calculation model for software simulation of the processes of magnetic conductivity change in the process of motion of the ferromagnetic elements of the ring rotor are constructed. The method of analytical calculation with sufficient accuracy determines only the value of the maximum conductivity in the position of the complete arrangement of the ferromagnetic element of the annular rotor in the slot of the stator magnet, when there are practically no phenomena of protrusion and scattering in the absence of magnetic saturation. In all other intermediate coordinate positions of the ferromagnetic elements of the rotor and in the position of the complete exit from the slot of the magnetic conduction, the change in magnetic conductivity must be determined by the field-by-field method with the help of software modeling of the spatial model of the magnetic system. Experimental investigations were carried out according to the well-known technique on the developed laboratory stand of the physical model of the magnetic circle.

The results of software modeling and experimental results showed a high level of coincidence, which allows us to apply these methods in the design process of constructions arc-stator inductor generators with a circular rotor, which are found to be applied on transmittingless wind turbines and other electromechanical systems.