SU547005A1 - Contactless electric motor - Google Patents

Description

one

This invention relates to the field of electric motors with brushless switches.

Electric motors known from a single-phase AC network are known, which have two pole systems on the stator, one constant, the other alternating current, and a winding and diodes installed on the rotor, with the winding sections closed through the diodes (1).

The disadvantage of these electric motors is the complexity of the design due to the presence of two pole systems.

Electric motors with a brushless commutator are also known, containing a non-pole, non-winding rotor-inductor and a main winding on the stator, sections of which are connected via valves to the winding sections of the transformer position sensor, driven from a fixed ring-shaped winding having a non-winding non-pole rotor (2).

The disadvantages of such electric motors are their structural complexity and low reliability.

To simplify the design and increase the reliability of the motor of the core winding section, they are located relative to the transformer sensor sections connected to them with a shift by 90 el.

hail., and the magnetic circuits of the rotors of the sensor and the engine are combined.

The motor excitation winding is ring-shaped and installed with the same face

side, as the excitation winding of the sensor on a common magnetic core and connected to the source through the valve. An adjustable resistor may be included in the DC drive winding circuit. On the stator is praying

one field winding should be installed, connected to the source of pulsating current.

FIG. 1 shows the described motor, longitudinal section; in fig. 2 - then

same, cross section; in fig. 3 shows an embodiment of an electric motor with a one-sided arrangement of the field windings, a longitudinal section; in fig. 4 - the same, with the DC winding closed

through a resistor; in fig. 5 - the same, a variant with a general winding of aeration.

On the stator I are placed in the slots of section 2, 3, 4 of the transformer sensor, having a primary winding 5 in the form of an axially located coil.

C alternated by 1 along the grooves. In the same stator there are sections b, 7, 8 of the root winding, shifted relative to the corresponding sections 2, 3, 4 by 90 el. hail, and connected to

last through rectifiers 9, 10, 11. Two axially lamellair packs 12 and 13 adjoin the stator, forming a magnetic circuit with toroids 14 and 15 and a rotor 16.

The rotor 16 is made in the form of an axially lamellar jacket and simultaneously conducts the flow of the winding 5 of the transformer sensor and the flow of the excitation winding 17 fed by direct current. This power supply can be carried out, for example, through rectifiers from an AC network to which an electric motor is connected.

The rotor position shown in FIG. 2, corresponds to the maximum flux linkage with section 2, at which in section 6 the maximum rectified current will flow. The rotor 16, excited by the winding 17, in this position is a bipolar electromagnet, one pole of which corresponds to a protrusion, and the other a depression, similar to how it takes place in an inductor machine of the same type of pole. The rotor is acted upon by an electromagnetic moment, driving it to the rim.1.

Then comes the next section 3 action, etc.

The drawing shows a rotor with one "tooth. However, it can be performed with two or more teeth; The core winding will have the number of drug poles equal to the number of teeth.

Thus, the rule is observed that the number of pairs of poles of a motor winding is always equal to the number of modulation of sensor parameters per revolution. For example, a two-pole rotor corresponds to a four-pole root winding.

The rotor 16 may consist of two separate parts: a pole-type magnetic conductor rotor of the sensor and a pole-pole rotor-inductor, for example, a permanent magnet or an electromagnet.

FIG. 3 shows an engine with a one-sided arrangement of the DC excitation windings 17 and the sensor excitation winding 5, making it possible to reduce the axial stator length.

Do this to exclude transformer power. d. Winding 17 should be connected via valve 18 to an adjustable DC source.

As shown in FIG. 4, by transforming the connection between the winding 5 and the winding 5, the winding 17 can be powered by closing it through a gate to an adjustable resistor, which also makes it possible to control the speed of the electric motor.

At the end, as shown in FIG. 5, the electric motor can also be performed with one common excitation winding 19, which is necessary

supply a pulsating current that creates a pulsating note that passes through the hunty rotor package 16. The variable component of the flow of this winding will flood the em. with. in the transformer sections, and it is governed to interact with the core sections, flowed by the rectified current, to form a torque.

Claims (4)

1. Contactless electric motor with a pole-pole rotor and the main winding on the stator, sections of which are connected via valves to sections of the winding of a transformer position sensor with a non-winding rotor and ring excitation winding, so that, in order to simplify the design and increase reliability , the core winding sections are located relative to the transformer sensor sections connected to them with a shift of 90 el. hail., and the magnetic circuits of the rotors of the sensor and the engine are combined. 2. Electric motor according to Clause 1, characterized in that a common ring with the excitation winding of a direct current motor is installed in common with the sensor winding of the sensor, in which circuit a valve is connected in series. 3. Electric motor on PP. 1, 2, characterized in that an adjustable resistor is connected to the DC drive winding circuit. 4. An electric motor according to claim 1, characterized in that it is made with one excitation winding connected to a source of pulsating current. Sources of information taken into account in the examination: 1. The patent of Germany No. 1268262, cl. 18/01, 1968. 2. USSR author's certificate No. 405158, M. Kl.- N 02K 29/04, 1971. 7216 / J m t K -O + -o r- / 5 : Uh ff + f