Electric motor-generator

Description

[0001] Electric motor-generator

[0002] H02K29 / 00

[0003] The invention relates to electrical engineering and is a reversible brushless DC electric machine with two coaxial flat rotors (in this embodiment, in the form of impellers) and can be used as a drive for technical equipment in various fields of application.

[0004] A valve motor is known that contains a stator with a multiphase winding, a cylindrical rotor with radially magnetized permanent magnets, rotor position sensors consisting of ferromagnetic cores with windings located at the end of the rotor, and in order to simplify and expand the functional capabilities, the ferromagnetic cores are made in the form of a single part - a flat ring, the windings are wound around the back of the ring and magnetosensitive elements are placed on the end surface of the ring facing the rotor (RU No. 2006143 C1, 16.07.1990).

[0005] However, the motor is structurally and technologically complex. It lacks a tachometer winding, and when used in an automated electric drive, it requires an additional tachometer generator, which further complicates the design and increases the axial length.

[0006] The objective of the invention is to simplify the design and expand the functional capabilities.

[0007] The technical result of solving the stated problem is the production of a brushless reversible DC electric machine.

[0008] The said technical result is achieved by the fact that an electric motor-generator is proposed, comprising a stator housing in the form of a ring, on the walls of which electromagnets are located, made from cores of a soft magnetic metal and windings, and two jumpers (upper and lower) are fixed, holding the fixed axis of rotation of the impellers, and a pulse control unit, ring magnets are installed on the axis unipolar with respect to each other, providing a tense magnetic field for shock-absorbing holding of the impellers at the required level of rotation, wherein the impellers with a magnetic system, friction bearings and holding ring magnets are made as a single element.

[0009] In one embodiment, the impellers have at least two or more blades.

[0010] In one embodiment, the impellers rotate on the shaft via plain bearings.

[0011] In one embodiment, the impellers are coaxially counter-rotating without gearing. In one embodiment, the pulse control unit is located in close proximity to the outside of the rotating impellers.

[0012] In one embodiment, control of the time and voltage of the pulse supply to the coils of the electromagnets is provided by devices.

[0013] Description of the proposed engine with links to drawings:

[0014] Fig. 1 shows the stator housing.

[0015] Fig. 2 shows the impellers.

[0016] Fig. 3 shows the assembled engine.

[0017] In the following, embodiments of the invention will be described in detail with reference to the accompanying figures.

[0018] Thus, according to Fig. 1-3, the proposed electric motor-generator comprises a stator housing (1) in the form of a ring, on the walls of which electromagnets (5) made of magnetically soft metal cores and windings are located, and two jumpers (2) (upper and lower) are fixed, holding a fixed axis (3) of rotation of impellers (4), and a control unit (8) of pulses, on the axis (3) ring magnets (6) are installed unipolarly with respect to each other, providing a tense magnetic field for shock-absorbing holding of impellers (4) at the required level of rotation, wherein impellers (4) with a magnetic system, friction bearings (not shown) and holding ring magnets (6) are made as a single element.

[0019] The impellers (4) have at least two or more blades (7). The impellers rotate on the shaft via plain bearings (not shown) and also have coaxial counter-rotation without gear elements. The pulse control unit (8) is located in close proximity to the outer side of the rotating impellers (4). Control of the time and voltage of the pulse supply to the electromagnet coils is provided by devices (not shown).

[0020] The operating principle of the proposed motor-generator is as follows:

[0021] When switched off, the impellers (4) occupy a strictly defined position due to the attraction of magnets to the metal poles of the magnetic circuits. In this case, the magnets on the impellers and the poles of the electromagnets (5) are positioned asymmetrically, meaning one magnet will be closer to the electromagnet pole than the other. The contacts on the switch are normally closed. When power is applied, all electromagnets (5) are energized simultaneously, and the force exerted by the electromagnets (5) on the nearest magnets of the impellers (4) will be greater, resulting in a powerful, multidirectional starting torque for the impellers (4).

[0022] Electromagnets (5) will attract opposite-polarity magnets and repel unipolar magnets simultaneously, accelerating the impeller rotation until the center of the electromagnet core (5) and the center of the magnet align. Immediately after the magnet crosses the center of the electromagnet core (5), the pulse is interrupted. With each approach of the magnet on the impellers (4) to the switch actuation zone, a pulse of the required duration and voltage will be applied to the coils of the electromagnets (5). This voltage will determine the force with which the electromagnets (5) will attract the poles of the magnetic system, and therefore the rotational speed of the impellers (4) and its traction characteristics. The use of cores made of soft magnetic metal eliminates losses in the form of heating of the magnetic circuits.

Claims

Invention formula 1. An electric motor-generator comprising a stator, characterized in that the stator housing is made in the form of a ring, on the walls of which electromagnets made of magnetically soft metal cores and windings are located, and two jumpers (upper and lower) are also secured, holding the fixed axis of rotation of the impellers, and a pulse control unit, ring magnets are mounted on the axis unipolar with respect to each other, providing a tense magnetic field for shock-absorbing holding of the impellers at the required level of rotation, wherein the impellers with the magnetic system, friction bearings and holding ring magnets are made as a single element.

2. An electric motor-generator according to claim 1, characterized in that the impellers have at least two or more blades.

3. An electric motor-generator according to claim 1, characterized in that the impellers rotate on the shaft by means of plain bearings.

4. An electric motor-generator according to claim 1, characterized in that the impellers have coaxial counter-rotation without reduction gear elements.

5. An electric motor-generator according to claim 1, characterized in that the pulse control unit is located in close proximity to the outer side of the rotating impellers.

6. An electric motor-generator according to paragraph 1, characterized in that control of the time and voltage of the pulse supply to the coils of the electromagnets is provided by devices.

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