SU1394334A1 - Electromagnetic suspension of flywheel-motor - Google Patents

Abstract

The invention relates to electrical engineering. The aim of the invention is to reduce the overall dimensions and weight of the suspension. Electromagnetic suspension consists of electromagnets of radial and axial stabilization, permanent magnets 1 and position sensors 2 3. The rotor 8 of the electromagnet axial stabilization is made in the form of a hollow cylinder, on the ends of which are mounted. pole pieces 9, 10 ring-shaped form. The tip 9 covers with a gap the magnetic circuit of the electromagnet of radial stabilization, and the tip 10 is inserted into the section of the magnetic conductor of the electromagnet axial stabilization. This makes it possible to increase the rigidity of the suspension. 3 il.

Description

nineteen

(L

but

00

from 4

with

00 4

The invention relates to electrical engineering and can be applied to non-contact supports of flywheel electric motors in transport and navigation devices.

The purpose of the invention is to reduce the mass and dimensions of the electromagnetic suspension.

On, 1 is shown electromagnetic suspension (EMF), longitudinal section; Fig. 2 shows the distribution of magnetic fluxes of a permanent magnet (f and an electromagnet (/) in an electromagnet of radial stabilization (EDS); fig.3 is the distribution of magnetic fluxes of a permanent magnet (P) and an electromagnet () in an electromagnet axial stabilization (EOS) ).

The EMI consists of two identical electromagnetic supports: left and right Sfig.}, Each support consists of EHS and EOS, permanent magnet 1, and position sensors: radial 2 and axial 3

The ERS contains magnetic core 4 and windings 5 located on it. The EOS consists of magnetic core 6 and ring winding 7, Electromagnetic ERS and EOS are made in the form of a design with a common rotor 8 having the shape of a hollow cylinder, the ends of which have annular pole ends 9 and 10, the tip 9 with a gap covers the magnetic core 4, and the tip 10 is inserted with gaps into the section of the magnetic circuit 6, EOS, the working gaps of (0.1-0.3) mm are found: dtc in the EDS between the surfaces of the magnetic circuit and pole tip 9, and in EOS - between the end bubbled surfaces of the pole piece 10 and the annular projections of the magnetic circuit, magnetic EDS 4 and 6 EOS Priests forged to opposite poles N and S of the permanent magnet 1,

In addition, the flywheel And, housing 12, safety ball bearings 13, mounted with gaps 14, are shown.

EPM works as follows.

When the size of the working gap in the EDS or EOS due to the displacement of the rotor I from a certain neutral position under the influence of any force — for example, weight — on the outputs of the corresponding sensors 2 and 3, electric sig5

0

0

0 5 0 5

the current, which is amplified by an electronic stabilization circuit and converted into current by windings 5 and 7, causing the stabilization force F to be restored in the working gaps, restoring the neutral position of the rotor 8, the stabilization force is due to the resulting magnetic flux, which is differently generated in the EDS and EOS in the result of the algebraic summation of the fluxes of a permanent magnet and electromagnet.

The moment of inertia of the engine I mr, where m is the mass, r is the radius: inertia, it follows that in order to reduce the mass, it is necessary to increase the radius of the rotating masses and to reduce the axial size of the engine makhovik. This requirement is met by the proposed device, in which an inverted design of axial stabilization electromagnets is proposed to reduce the weight and dimensions in the axial direction. As for the rotor B, it is located at a considerable radius of inertia and, according to the formula T mr, effectively contributes to reducing the mass of the flywheel 11 at a given value of the moment of inertia.

Claims (1)

Invention Formula Electromagnetic suspension of the engine - flywheel, consisting of two identical electromagnetic supports, each of which includes electromagnets of radial and axial stabilization with magnetic conductors, a permanent magnet and positional sensors for monitoring the clearances of melodies with fixed and rotating parts, characterized in order to reduce the masses and dimensions of the suspension, electromagnets of radial and axial stabilization lie fixed to the opposite poles of a permanent magnet mounted on a fixed shaft of a non-magnetic Therians and covered on the outside a hollow rotor of a magnet material g- one polepiece annular shape, one of which is an electromagnet with a gap ohvatshaet radial stabilization, and the other is situated with clearance in an axial sectional view of the magnetic circuit of the electromagnet stabilization. Fp 7 (ig. W