SU1319179A1 - Synchronous electric machine - Google Patents

Abstract

The invention relates to synchronous micromachines with switching magnetic flux. The purpose of the invention is to simplify the design of the machine. The machine contains an annular axially magnetized permanent magnet 1, on the end surfaces of which two groups of pole projections 3 and 4 of opposite polarity are made. The coils of 5 phases of the root winding, the active parts of which lie in planes perpendicular to the axis of rotation, cover adjacent opposite pole projections 3 and 4. The rotor 7 contains a shaft 8 with two axially spaced and 9 pole and 10 connected systems with a ferromagnetic sleeve. The pole systems 10 and 11 consist of poles and pole hollows. The pole protrusions of opposite polarity, as well as the poles of the pole systems of the rotor, are symmetric about the plane perpendicular to the axis of rotation. In this case, the pole systems of the rotor are located on the end sides of the ring permanent magnet. By eliminating two stator packs, the design of the machine is simplified. 2 Il. i (Л С со QD Ю

Description

The invention relates to electric machines, namely synchronous micromachines with switching magnetic flux.

The aim of the invention is to simplify the design of the machine.

FIG. 1 depicts a synchronous electric machine, axonometric; in fig. 2 - placement of the phases of the core winding.

The synchronous electric machine contains a stator 1, which is a circular axially magnetized permanent magnet 2, with pole projections 3 and 4 of opposite polarity, at the ends. On each pair of adjacent opposite pole protrusions 3 and 4, there are coils 5 of the core winding 6. Pole protrusions 3 and 4 are made in section, for example, trapezoidal shape, the larger base of which is facing the outer cylindrical surface of the ring permanent magnet 2. The rotor 7 contains a shaft 8 with two axially spaced and axially connected ferromagnetic sleeves with 9 pole systems 10 and 11, consisting of magnetically pronounced magnet poles 12, whose width is half the distance between the poles. The pole systems 10 and 11 of the rotor 7 are symmetrically located at the ends of the pole projections 3 and 4. The outer diameter of the magnet 2 is equal to the outer diameter of the rotor 7. The number of pole projections 3 and 4 is twice the number of poles of 12 pole systems 10 and 11.

When the machine is operating, the axial excitation magnetic flux created by the annular permanent magnet 2 passes successively from the pole projections 3 of polarity N through the first axial air gap, the poles 12 of the pole system 10 of the rotor 7, opposite the pole projections 3 with the indicated polarity, through a ferromagnetic the sleeve 9, the poles of the 12-pole system 11, symmetrically located on the shaft 8 relative to the poles of the 12-pole system 10, the second axial air gap, closure

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on the pole protrusions 4 of polarity S. Since the polar pole protrusions 3 and 4 are symmetrically located, they are covered by different coils 5, the magnetic flux closing on the pole projections 3 and 4, the passage through the coils 5, conducts an electromotive force in the opposite direction.

When the rotor 7 rotates in each phase of the root winding 6, the magnetic flux switches, the circuit paths of which are determined by the position in space of the pole systems 10 and 11 of the rotor 7 relative to opposite pole lugs 3 and 4 of the stator 1. At the same time, the electromotive force induced in each coil 5 the phases of the core winding 6 are proportional to the difference in the fluxes passing through these coils.

In comparison with the known, the proposed synchronous machine has a simpler design due to the absence of two stator packages,

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Claims (1)

Invention Formula Synchronous electric machine, containing a stator in the form of an annular axially magnetized permanent magnet with pole lugs, core phase winding coils located on each pair of opposite pole lugs, a rotor with two winding ferromagnetic pole systems interconnected by an axially located ferromagnetic body connected to an axially sys- rotor systems are made twice the distance between the poles, characterized in that, in order to simplify the design of the machine, pole projections s formed on the end surfaces of the permanent magnet, the anchor coil windings of phases are arranged on adjacent pole protrusions heteronymic polarity and oppositely connected, the rotor pole system adapted to the number of poles twice the smaller number of poles and the projections are arranged at opposite ends of the pole protrusions of the stator. 0 five 0 five 0 Invention Formula Synchronous electric machine, containing a stator in the form of an annular axially magnetized permanent magnet with pole lugs, core phase winding coils located on each pair of opposite pole lugs, a rotor with two winding ferromagnetic pole systems interconnected by an axially located ferromagnetic body connected to an axially sys- rotor systems are made twice the distance between the poles, characterized in that, in order to simplify the design of the machine, pole projections s formed on the end surfaces of the permanent magnet, the anchor coil windings of phases are arranged on adjacent pole protrusions heteronymic polarity and oppositely connected, the rotor pole system adapted to the number of poles twice the smaller number of poles and the projections are arranged at opposite ends of the pole protrusions of the stator. .5 C FIG. 2