SU1467749A1 - Contact free synchronous machine - Google Patents

Abstract

This invention relates to electrical engineering and can be used in variable speed drives. The aim of the invention is to increase the reliability by reducing the residual EMF in the core winding with the de-energized excitation winding and increasing the energy indices by decreasing the excitation current when adjusting this EMF to zero. For this, between the magnets 6 and the core 5 of the inductor, ferromagnetic pole lugs 8 and the adjoining magnetic potential of the inductor on the one side and ferromagnetic elements 9 on the other side of the inductor on the other side are installed. 1 3 3. Clause f-crystals, 4 Il. (WITH

Description

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FIELD: electrical engineering. With coordinated winding switching.

in particular, to contactless electrical excitation with permanent magnets, for coking machines, which are used in red, they regulate the emf of the winding of the core to the needled drives, l requires less current in the winding, so

The purpose of the invention is to increase reliability. 5 An already saturated zone is prevented by reducing the residual EMF flow from the winding to the excitation winding of the core when the excitation winding is de-energized, and the energy performance is increased by reducing the excitation current to regulate the residual EMF to zero.

FIG. 1 shows an electric machine, cross section; in fig. 2 - the same longitudinal section; in fig. 3 - inductor design with T-shaped ferromagnetic elements; in fig. 4 - the same, 15 adjacent to the magnet, should be on with a W-shaped ferromagnetic element - level or below the optimal depth of the groove, so as not to reduce flow pulsations due to the difference of conductivities “tooth-groove.

Day through the magnets and the flow is mainly through the pole (tooth) of the inductor, which leads to the suppression of the flow of permanent magnets.

It should be noted that it is most effective to use a comb when using magnets with a rectangular demagnetization curve.

In addition, the surface "comb,

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To improve the manufacturability of the pole, the machine contains a stator consisting of a magnetically conducting housing 1, inside of which there are two packages 2 stator cores with a winding 3 core in the grooves 20 tips and saturable element and ring excitation winding 4 (OM) you can be made one in between packets, and a rotating inductor. The inductor contains a magnetic core 5, in the hollows between the poles or the W-shaped part (Fig. 3 and 4).

Thus, the saturating zone

located under the magnets on the sides of which the permanent magnet magnet of the inductor core is installed, makes it possible to reduce the EMF of 6. Under the magnets are the sat-windings of the core from the permanent magnets

leveling zones 7 containing a ferromag at a de-energized excitation winding and low-pole pole HakoHe4HHKH 8, equalize the excitation winding current at a constant voltage EMF of the winding of the core to zero, according to

magnet, and saturating ferromagnet compared with a machine that has

The elements 9. The ferromagnetic element 9 30 is not provided, it is a "comb of individual electrical steel sheets with a rectangular magnetization curve. Nonmagnetic shims can be installed between the individual comb sheets.

Claims (1)

1. A contactless synchronous machine with an excitation ring winding on a synchronized machine operates with the following 35 torus and with a winding inductor with one 40 in a way. The cross section of the ferromagnetic saturating element 9 is chosen such that when the excitation winding is de-energized, the element 9 comes into a state of saturation from the flow created by the magnets. The magnetic resistance increasing due to saturation in the flow path of the magnets significantly reduces the depth of the pulsations of the flow from the magnets in the air the gap and, therefore, the emf in the winding of 45i and this emf to zero, it is equipped with ferro-magnetic pole tips and, in addition, the resistance of magnetic sizing elements in the amount machine chains along the axis of the trough, in which the equal number of poles of the inductor, the permanent magnet and saturating tips are located along the inside element, nonlinearly due to the saturation of the permanent, permanent magnets surface, last one. In the normal mode, the OB of the 50 facing to the between the pole zone is inductively connected with magnets, the magnetic co-torus, and the saturable elements of the resistivity decrease and become between the pole tips linear. Nonlinearity of saturates and inductor skeleton. element ("comb) is chosen as follows2. The machine according to claim 1, wherein Thus, despite the demagnetization of the pole tips and the saturating action of the OM, the working point of the magnet elements is made as a single ferrometre in this mode lies to the right of the T-shaped or O-de-disconnected O.Tali magnetic point. nominal newly expressed poles between which radially magnetized permanent magnets are installed, the polarity of which is opposite to the polarity of the poles, in order to increase reliability by reducing the residual EMF in the core winding with de-energized excitation winding and increasing energy indicators by decreasing the excitation current when adjusting to the magnet, it should be at or below the optimal depth of the groove, so as not to reduce flow pulsations due to the difference in conductivities “tooth-groove”. Day through the magnets and the flow is mainly through the pole (tooth) of the inductor, which leads to the suppression of the flow of permanent magnets. It should be noted that it is most effective to use a comb when using magnets with a rectangular demagnetization curve. In addition, the surface "comb, To increase the manufacturability, the pole tips and saturating elements can be made as one Tedus, Invention Formula no zone provided 1. Contactless synchronous machine with an excitation ring winding on the stator and with a non-winding inductor with one This EMF is zero, it is equipped with ferromagnetic pole tips and the least pronounced poles, between which radially magnetized permanent magnets are installed, the polarity of which is opposite polarity of the poles, in order to increase reliability by reducing the residual EMF in winding the core when the excitation winding is de-energized and increasing the energy indices by decreasing the excitation current when adjusting the fig. 2 6183 FIG L