CN117458814A

CN117458814A - Double-fed motor and electromagnetic torque converter

Info

Publication number: CN117458814A
Application number: CN202311402032.XA
Authority: CN
Inventors: 罗明远
Original assignee: Individual
Current assignee: Individual
Priority date: 2023-10-26
Filing date: 2023-10-26
Publication date: 2024-01-26

Abstract

A doubly-fed motor has a stator, a rotor, and two rotating field generators called a first gyromagnetic device and a second gyromagnetic device, respectively. The stator and the rotor are embedded with a squirrel cage. The motor has three magnetic circuits: the first magnetic circuit includes a portion of the stator core and a first gyromagnetic device; the second magnetic circuit includes a portion of the rotor core and a second gyromagnetic device; the third magnetic circuit includes another portion of each of the stator core and the rotor core. The gyromagnetic device can respectively generate a rotating magnetic field in the stator and the rotor and induce current in the squirrel cage of the stator and the rotor; further, a rotating magnetic field is induced in the third magnetic circuit, and the rotor is driven to rotate and output torque. The motor can realize the speed change of the alternating current motor without a frequency conversion device, and can still keep higher transduction efficiency at lower output rotating speed. In addition, the motor drives the gyromagnetic device by mechanical power and can be used as an electromagnetic torque converter for variable-speed transmission.

Description

Double-fed motor and electromagnetic torque converter

Technical Field

The present invention relates to an ac motor and an electromagnetic torque converter.

Background

Ac motors, including ac motors and generators, are the most commonly used motors, but speed regulation has been a difficult problem for many years. This problem is not solved until the frequency conversion speed regulation technology is mature in recent years. However, the converter equipment necessary for variable frequency speed regulation is complex and expensive, and the converter process also generates a small electric energy loss.

In addition, in the existing few transmission devices, a hydraulic torque converter is also required. However, this torque converter is not efficient and has a low torque ratio, which is a difficult disadvantage to overcome. Although the electromagnetic speed changing device is theoretically used for torque-changing transmission, the electromagnetic speed changing device can have better effect; however, if the current is implemented by the prior art, it is necessary to convert the input mechanical energy into electrical energy by using one generator, and then input the current into another motor after converting the frequency, so as to drag the load according to the required rotation speed and torque. The whole set of device is quite complicated and has no small energy loss.

In view of the above, the present invention aims to create a novel electromagnetic power device which can be changed in speed without a variable-frequency power supply, has a simple and compact structure, and has the application of a novel alternating current motor and an electromagnetic torque converter which are used as variable-speed driving.

Disclosure of Invention

In order to achieve the foregoing object, the motor of the present invention has an output shaft, a stator, a rotor; and two sets of rotating magnetic field generators, respectively called a first gyromagnetic device and a second gyromagnetic device.

The stator is arranged on the frame and can not rotate; and has a magnetically permeable stator core with a squirrel cage embedded in one surface, a well known cage conductor.

The rotor is mounted on the output shaft and is non-rotatable relative to the output shaft; and has a magnetically permeable rotor core; one surface of the iron core is also embedded with a squirrel cage.

The centre line of the output shaft, i.e. the rotor axis of rotation, is also called the centre line of the motor.

The first gyromagnetic device and the second gyromagnetic device are respectively provided with a component for generating a rotating magnetic field, such as a rotatable magnetic pole or a multiphase winding. The term "multiphase winding" refers to a winding that can generate a rotating magnetic field by supplying two-phase or three-phase alternating current.

The magnetic fields directly generated by the two gyromagnetic devices rotate in the same direction and synchronously by taking the central line of the motor as an axis, and are respectively called a first primary magnetic field and a second primary magnetic field.

A part of the surface of the stator core embedded with the squirrel cage faces and is adjacent to the first gyromagnetic device; there is another part.

A part of the surface of the rotor core embedded with the squirrel cage faces and is adjacent to the second gyromagnetic device; and another part thereof, said another part of the surface of the stator core in which the squirrel cage is embedded, facing and adjacent to the stator core; however, the rotor core is not in direct contact with the stator core and the second gyromagnetic device, so that the rotation of the rotor core is not hindered.

According to the above arrangement, the motor of the present invention has three magnetic circuits, which are respectively referred to as a first magnetic circuit, a second magnetic circuit, and a third magnetic circuit.

The first magnetic circuit comprises a first gyromagnetic device and a part of a stator iron core, and can conduct a first primary magnetic field, and main magnetic flux of the first magnetic circuit is crosslinked with a stator squirrel cage.

The second magnetic circuit comprises a second gyromagnetic device and a part of the rotor iron core, and can conduct a second primary magnetic field, and main magnetic flux of the second magnetic circuit is crosslinked with the rotor squirrel cage.

The third magnetic circuit includes the other portion of the stator core, and the other portion of the rotor core.

When the two gyromagnetic devices excite main magnetic fluxes of primary magnetic fields in the first magnetic circuit and the second magnetic circuit respectively, currents are induced in the stator squirrel cage and the rotor squirrel cage respectively. The latter two in turn induce a magnetic field, called the secondary magnetic field, in the tertiary magnetic circuit.

The main magnetic flux conducted by the secondary magnetic field through the third magnetic circuit is crosslinked with the stator squirrel cage and the rotor squirrel cage at the same time.

Because the squirrel-cage currents of the stator and the rotor are induced by two primary magnetic fields which rotate in the same direction and synchronously, the secondary magnetic fields induced by the squirrel-cage currents of the stator and the rotor also naturally rotate synchronously relative to the rest according to the rotating speed and the direction of the primary magnetic fields at any working rotating speed of the rotor. Therefore, the motor is reasonably designed so that the magnetic axes of the two primary magnetic fields have proper relative orientations when the motor works; the rotor current will produce torque under the primary magnetic flux of the secondary magnetic field.

The motor of the invention has the capability of automatically adapting to the load in a certain load variation range. For example, when the load torque becomes larger, the rotor rotation speed is reduced, the rotor current is also increased, and the output torque is usually increased; the output and load of the motor then reach a new equilibrium at a reduced rotational speed. Conversely, if the load torque becomes smaller, the output and load of the motor may also reach a new balance at an increased rotational speed. Therefore, the motor of the invention can have different rotating speeds when driving different loads, and the power frequency does not need to be changed.

The third magnetic circuit portion of the motor of the present invention is substantially similar to existing doubly-fed machines. Because the rotor current is mainly induced by the primary magnetic field of the second gyromagnetic device, but not by the stator current in the third magnetic circuit; therefore, the torque output by the rotor current under the action of the secondary magnetic field does not cause slip loss like a common asynchronous motor. Therefore, although the rotating speed of the motor rotor is asynchronous with the magnetic field in the third magnetic circuit, the motor can still keep higher efficiency when working at a lower rotating speed.

If the rotation speed and the magnetic flux of the primary magnetic field are kept unchanged, the output torque of the motor is directly related to the magnetic flux of the secondary magnetic field. Thus, the output torque and rotational speed of the motor can be adjusted by changing the magnetic flux of the secondary magnetic field. For this purpose, the area of the magnetically permeable cross section of the third magnetic circuit, or the length of the air gap within the magnetic circuit, is typically varied.

In particular, two sets of gyromagnets of the motor of the present invention have poles driven with mechanical power, and can output the input rotational power at varying rotational speeds and torques. The ratio of its output torque to said input torque is referred to as the torque converter ratio of the electric machine. This torque ratio is directly related to the ratio of the magnetic flux of the secondary magnetic field to the magnetic flux of the primary magnetic field. If the magnetic flux of the third magnetic circuit is properly increased, a larger torque conversion ratio can be obtained; thus, such an electric machine may be used as a torque converter. The advantages are that: if the magnetic pole of the gyromagnetic device adopts an electromagnet, the input torque can be adjusted by adjusting exciting current, so that the gyromagnetic device is quite convenient. If the magnetic pole of the gyromagnetic device adopts a permanent magnet, the stator and the rotor only have squirrel cages without windings, and the structure is quite simple. Further, if the magnetic flux of the third magnetic circuit is continuously changed, the output speed can also be steplessly changed.

Compared with the existing hydraulic torque converter, the electromagnetic torque converter is simpler in structure; and because no working fluid is used, a liquid leakage-proof structure is not required to be arranged, and the limitation of the working fluid on the working temperature is avoided. More importantly, to adapt the characteristics of the existing torque converter to the change of working conditions, the liquid charge of the existing torque converter must be changed, or even the attack angles of a plurality of blades of the existing torque converter must be synchronously adjusted; for this reason, a very complex mechanism needs to be provided. The electromagnetic torque converter is suitable for the change of working conditions, and only needs to adjust the magnetic flux of the primary magnetic circuit and the secondary magnetic circuit or adjust the phase difference of the secondary magnetic fields of the stator and the rotor, so that the structure is quite simple.

The principles and embodiments of the present invention are further described below with reference to the drawings.

Drawings

Fig. 1 is a partially cut-away schematic illustration of the basic structure of the motor of the present invention.

Fig. 2 is a schematic structural view of an electric motor of the present invention having gyromagnetic devices with multiphase windings.

Fig. 3 shows the positional relationship between the magnetic axes of two gyromagnetic windings of the motor of fig. 2.

Fig. 4 shows a structure of the motor shown in fig. 2. The orientation of one set of gyromagnetic poles of the motor relative to the other set of gyromagnetic poles can be adjusted.

Fig. 5 shows the ac windings of two sets of gyromagnets of the motor of fig. 2, which may be connected in parallel to a power source.

Fig. 6 and 7 show ac windings of two sets of gyromagnets of the motor of fig. 2, which can be connected in series to a power supply. Furthermore, the two primary magnetic fields of the illustrated motor can be made to have different phases by means of capacitors.

Fig. 8 is a schematic structural view of an electric motor of the present invention, referred to as an electromagnetic torque converter, in which two gyromagnets are driven to rotate by mechanical power.

Fig. 9 shows a positional relationship between the magnetic poles of the two gyromagnetic devices in the electromagnetic torque converter shown in fig. 8.

Fig. 10 shows a structure of the electromagnetic torque converter shown in fig. 8, in which the magnetic conductive cross-sectional area of the third magnetic circuit is adjustable.

Fig. 11 is also a schematic diagram of an electromagnetic torque converter of the present invention, in which two gyromagnetic devices have poles excited with direct current.

Fig. 12 shows a structure of an electromagnetic torque converter of the present invention, which has an outer rotor surrounding a stator. Taking this as an example, it is explained that the motor of the present invention may have various structural forms.

Detailed Description

As shown in fig. 1, an electric machine according to the invention has a stator (6), a rotor (1) and an output shaft (4). The stator has a stator core (7) mounted on the frame. The rotor has a rotor core (3); one surface of which is embedded with a rotor cage (2) and is mounted on an output shaft (4) so as to be non-rotatable relative to the output shaft.

The centre line of the output shaft (4) is also called the centre line of the motor.

The motor also has two sets of rotating magnetic field generators, respectively called a first gyromagnetic device (9) and a second gyromagnetic device (5). The gyromagnets each have a component that generates a rotating magnetic field, the magnetic fields generated directly by which are referred to as a first primary magnetic field and a second primary magnetic field, respectively. The first primary magnetic field and the second primary magnetic field rotate in the same direction and synchronously by taking the central line of the motor as an axis.

One surface of the stator core (7) is embedded with a stator squirrel cage (8). One part of the surface faces and is adjacent to the first gyromagnetic device (9), and the other part is arranged.

A part of the surface of the rotor core (3) embedded with the squirrel cage (2) faces towards and is adjacent to the second gyromagnetic device (5); while the other part thereof faces and is adjacent to said other part of the surface of the stator core (7) in which the squirrel cage is embedded, but is not in direct contact with the adjacent surfaces of said stator core and the second gyromagnetic device, so that its rotation is not hindered.

According to the arrangement, the motor of the invention has three magnetic circuits, respectively referred to as a first magnetic circuit (10), a second magnetic circuit (12) and a third magnetic circuit (11).

The first magnetic circuit (10) comprises a first gyromagnetic device (9) and a part of a stator iron core (7) and can conduct a first primary magnetic field; the main magnetic flux thereof is crosslinked with the stator squirrel cage (8).

The second magnetic circuit (12) comprises a second gyromagnetic device (5) and a part of the rotor core (3) and can conduct a second primary magnetic field; the main magnetic flux thereof is crosslinked with the rotor cage (2).

The third magnetic circuit (11) includes another part of the stator core (7) and another part of the rotor core (3).

When the two gyromagnetic devices excite main magnetic fluxes of primary magnetic fields in the first magnetic circuit (10) and the second magnetic circuit (12) respectively, currents are induced in the stator squirrel cage (8) and the rotor squirrel cage (2) respectively. The latter two in turn induce a magnetic field, called secondary magnetic field, in the tertiary magnetic circuit (11).

The secondary magnetic field is conducted with the main magnetic flux of the third magnetic circuit and is simultaneously crosslinked with the stator squirrel cage (8) and the rotor squirrel cage (2).

As described above, the rotor outputs torque when the two gyromagnetic devices of the motor generate a primary rotating magnetic field.

Fig. 2 shows an electric machine as shown in fig. 1, with a stator (6), a rotor (1), an output shaft (4) and two sets of rotating magnetic field generators, called first gyromagnet (9) and second gyromagnetic (5), respectively.

The first gyromagnetic device (9) has a core (16) and a polyphase winding (15). The winding generates the first primary magnetic field upon application of an alternating current.

The second gyromagnetic device (5) comprises an iron core (13) and a multiphase winding (14) thereof, wherein the iron core (13) is fixed on the rack; the winding generates the second primary magnetic field after being energized with an alternating current.

The first magnetic circuit of the motor is crosslinked with the stator squirrel cage (8) through a part of the iron core (16) and the stator iron core (7) of the first gyromagnetic device.

The second magnetic circuit of the motor is crosslinked with the rotor squirrel cage (2) through a part of a rotor core (3) and a core (13) of a second gyromagnetic device (5).

The third magnetic circuit of the motor comprises another part of the stator iron core (7) and another part of the rotor iron core (3), and is simultaneously crosslinked with the stator squirrel cage (8) and the rotor squirrel cage (2).

The magnetic axes of the windings (15) of the first gyromagnetic device and the windings (14) of the second gyromagnetic device are arranged around the centre line of the motor in different orientations. As seen in the direction A in FIG. 2, an included angle (a) is formed between the two magnetic axes along the motor steering direction (r) as shown in FIG. 3. This angle has a great, even decisive influence on the phase angle difference between the magnetic axis of the secondary magnetic field of the rotor and the magnetic axis of the secondary magnetic field of the stator when the motor is in operation. If the included angle (a) is set so that the rotor secondary magnetic field lags behind the stator secondary magnetic field when the motor is in operation, the motor can generate torque to drag the load to rotate; conversely, if the rotor secondary field is advanced relative to the stator secondary field, the motor may enter a generating mode under load drag, outputting electrical energy from the windings (15) of the first gyromagnetic device.

A first gyromagnetic core (16) of the motor shown in figure (2) is adjacent to the surface of the stator core (7) and is tightly matched with the surface of the stator core embedded with the squirrel cage (8) so as not to rotate. This structure can reduce the reluctance of the first magnetic circuit of the motor.

The motor shown in fig. 2 is shown in fig. 4, wherein a first gyromagnetic device (9) is arranged on a frame, a core (16) of the motor is adjacent to the surface of a stator core, and a gap is reserved between the first gyromagnetic device and the surface of the stator core (7), or only a loose fit exists between the first gyromagnetic device and the surface of the stator core, so that the first gyromagnetic device (9) can rotate around the central line of the motor. At the same time, the motor is also provided with a set of mechanisms (17) capable of rotating the first gyromagnetic device, such as a wheel disc, a handle and the like which are well known. The orientation of the AC multiphase winding (15) can be changed by the mechanism. Therefore, the mechanism can be used for changing the phase angle difference between the magnetic fields of the multiphase windings (15) and (14) of the two gyromagnetic devices, so as to adjust the output torque and the rotating speed of the motor, and even change the mode that the motor works in an electric state or a power generation state.

The motor of the invention shown in fig. 2, in which the multiphase ac windings (14), (15) of the two gyromagnetic devices can be connected in parallel to the same power supply, is shown in fig. 5.

The motor of the invention shown in fig. 2, in which the ac polyphase windings (14), (15) of the two gyromagnetic devices are connected in series, can also be connected to the same power supply, as shown in fig. 6 and 7.

The motor of the present invention shown in fig. 2, in which the ac windings of the gyromagnetic devices are connected in parallel or in series to a power source, will have different torque characteristics.

Fig. 6 also shows a circuit of the motor of fig. 2, in which the ac polyphase windings (14) (15) of the two gyromagnetic devices are connected in series to the same power supply. Meanwhile, each phase winding of the alternating current multi-phase winding (14) of the second gyromagnetic device of the motor is respectively connected with a capacitor (18) in parallel. A capacitor (18) of suitable capacity can cause the rotor secondary field of the motor to lag behind the stator secondary field, thereby allowing the motor to act as a motor drag load.

Fig. 7 also shows a circuit of the motor of fig. 2, in which the ac polyphase windings (14), (15) of the two gyromagnetic devices are connected in series to the same power supply. Meanwhile, each phase winding of the alternating current multiphase winding (15) of the first gyromagnetic device is respectively connected with a capacitor (19) in parallel. A capacitor (19) of suitable capacity can lead the rotor secondary field of the motor to the stator secondary field, so that the motor can enter a power generation mode under the dragging of a load, and electric energy is output from the multiphase winding (15) of the first gyromagnetic device.

If the motor of the invention adopts a three-phase type multiphase winding, the connection between the motor and a power supply can be realized by two connection methods of star shape and triangle shape. FIG. 5 shows a star connection with windings connected in parallel to a power source; figures 6 and 7 show delta connections of windings in series to a power supply. In practice, the three-phase windings of the motor of the invention can also be connected in series with the power supply by star connection or connected in parallel with the power supply by delta connection. Since this is well known, it will not be described in detail here.

Fig. 8 shows a special type of electric machine of fig. 1, namely an electromagnetic torque converter.

The electromagnetic torque converter has an input shaft (20) that is driven in rotation by mechanical power.

The first gyromagnetic device and the second gyromagnetic device are respectively provided with respective magnetic poles (21) and (22); the poles (21, 22) are each mounted on an input shaft (20) and are non-rotatable relative thereto.

When the input shaft (20) is driven to rotate by mechanical power, the primary magnetic fields respectively generated by the magnetic poles (21) and (22) also rotate in the same direction and synchronously, and stator current and rotor current are respectively induced in the stator squirrel cage (8) and the rotor squirrel cage (2). The stator current and the rotor current both induce a secondary magnetic field in the third magnetic circuit, which rotates synchronously in the same direction, and act on the rotor current to make the rotor output a rotational torque.

Fig. 9 shows the direction B of fig. 8, wherein the magnetic pole (21) of the first gyromagnetic device and the magnetic pole (22) of the second gyromagnetic device are arranged on the input shaft (20), and an included angle (B) is formed between the magnetic axis directions of the first gyromagnetic device and the second gyromagnetic device according to the rotor steering direction (r). By setting the angle (b) appropriately, the rotor current of the electromagnetic torque converter during operation is retarded from the stator current, so that the rotor can output torque. Conversely, if the set angle (b) leads the rotor current of the torque converter to lead the stator current, the rotor can brake the load.

FIG. 10 shows an electromagnetic torque converter of FIG. 8 with a stator core (7) axially movable along a centerline of the electromagnetic torque converter; therefore, the torque converter can change the area of the magnetic conduction section of the third magnetic circuit, and further change the mechanical characteristics of the torque converter to adapt to the working requirement.

For this purpose, the torque converter is provided with a set of means (23) by which the position of the stator core (7) is moved and set. The mechanism may be a well-known mechanism such as "screw/nut", "gear/rack", "fork/slide", etc., and will not be described in detail here.

There is an electromagnetic torque converter shown in fig. 8, in which the magnetic pole (21) of the first gyromagnetic device and the magnetic pole (22) of the second gyromagnetic device each include a permanent magnet. And main magnetic fluxes in the first magnetic circuit and the second magnetic circuit are respectively excited by the permanent magnets in the magnetic poles.

Another electromagnetic torque converter shown in fig. 8 is shown in fig. 11, in which a magnetic pole (21) of a first gyromagnetic device has a core (24) and an exciting winding (25), and a magnetic pole (22) of a second gyromagnetic device has a core (27) and an exciting winding (26). The electromagnetic torque converter also has a current collector (28). In the rotating state of the gyromagnetic device, the excitation windings (25) (26) can also be supplied with electricity via the current collector (28). The current collector may be of the well known "brush/slip-ring type" or "brushless". After the current collector (28) is powered on, the exciting windings (25) and (26) have direct current flowing through them and excite the main magnetic flux in the first magnetic circuit; at the same time, the exciting winding (26) excites the main magnetic flux in the second magnetic circuit.

The input and output torque of the electromagnetic torque converter can be adjusted by adjusting the current supplied to the exciting winding.

It is necessary to explain that: the motor of the present invention may have a variety of structural styles. For example, as shown in fig. 1, 2, and 8, the rotor core may be designed as a common "inner rotor type", that is, the rotor core is surrounded by the stator core; it may also be designed as an "outer rotor", i.e. a stator core surrounded by a rotor core.

For example, a structure of an electromagnetic torque converter of the present invention of an "outer rotor type" is shown in fig. 12. The electromagnetic torque converter comprises an input shaft (20), an output shaft (4), an inner stator (34), an outer rotor (30), a set of first gyromagnet (33) and a set of second gyromagnet (29). The inner stator (34) comprises an iron core (36) and a squirrel cage (35); the outer rotor (30) comprises an iron core (31) and a squirrel cage (32); the inner stator core (36) is surrounded by the outer rotor core (31).

Claims

1. An electric motor having a stator (6), a rotor (1) and an output shaft (4); the stator has a stator core (7) mounted on the frame; the rotor is provided with a rotor core (3), one surface of which is embedded with a rotor squirrel cage (2) and is arranged on an output shaft (4) and is non-rotatable relative to the output shaft; the centre line of the output shaft (4) is also called the centre line of the motor;

the method is characterized in that:

the motor is also provided with two sets of rotating magnetic field generators, which are respectively called a first gyromagnetic device (9) and a second gyromagnetic device (5); the gyromagnets each have a component for generating a rotating magnetic field, and the magnetic fields directly generated by the gyromagnetic devices are respectively called a first primary magnetic field and a second primary magnetic field; the first primary magnetic field and the second primary magnetic field rotate in the same direction and synchronously by taking the central line of the motor as an axis;

one surface of the stator iron core (7) is embedded with a stator squirrel cage (8); one part of the surface faces and is adjacent to the first gyromagnetic device (9), and the other part is arranged;

a part of the surface of the rotor core (3) embedded with the squirrel cage (2) faces and is adjacent to the second gyromagnetic device (5), and the other part of the surface of the rotor core (3) embedded with the squirrel cage faces and is adjacent to the other part of the surface of the stator core (7).

2. An electrical machine according to claim 1,

the method is characterized in that:

the first gyromagnetic device (9) is provided with a core (16) and a multiphase winding (15); the winding generates the first primary magnetic field after alternating current is supplied;

the second gyromagnetic device (5) is provided with an iron core (13) and a multiphase winding (14) which are arranged on the rack;

the winding generates the second primary magnetic field after being energized with an alternating current.

3. An electrical machine according to claim 1,

the method is characterized in that:

the winding generates the second primary magnetic field after being electrified with alternating current;

the iron core (16) of the first gyromagnetic device (9) is adjacent to the surface of the stator iron core (7), is tightly matched with the surface of the stator iron core embedded with the squirrel cage (8), and can not rotate.

4. An electrical machine according to claim 1,

the method is characterized in that:

the first gyromagnetic device (9) is arranged on the frame and can rotate around the central line of the motor.

5. An alternating current motor according to claim 1,

the method is characterized in that:

the two sets of alternating current multiphase windings (14) (15) are connected in series to a circuit of the same power supply;

each phase winding of the multiphase winding (14) of the second gyromagnetic device is connected in parallel with a capacitor (18).

6. An electrical machine according to claim 1,

the method is characterized in that:

each phase winding of the multiphase winding (15) of the first gyromagnetic device is connected in parallel with a capacitor (19).

7. An alternating current motor according to claim 1, called an electromagnetic torque converter,

the method is characterized in that:

has an input shaft (20) which can be driven in rotation by mechanical power;

8. An electrical machine, as claimed in claim 1, called an electromagnetic torque converter,

the method is characterized in that:

has an input shaft (20) which can be driven in rotation by mechanical power;

the first gyromagnetic device and the second gyromagnetic device are respectively provided with respective magnetic poles (21) and (22); the magnetic poles (21, 22) are both mounted on the input shaft (20) and are non-rotatable relative to the input shaft;

the stator core (7) can move axially along the center line of the electromagnetic torque converter.

9. An electrical machine, as claimed in claim 1, called an electromagnetic torque converter,

the method is characterized in that:

has an input shaft (20) which can be driven in rotation by mechanical power;

the first gyromagnetic device and the second gyromagnetic device are respectively provided with respective magnetic poles (21) and (22); the magnetic poles (21, 22) are both mounted on the input shaft (20) and are non-rotatable relative to the input shaft; the magnetic poles (21) of the first gyromagnetic device and the magnetic poles (22) of the second gyromagnetic device respectively comprise permanent magnets.

10. The electromagnetic torque converter according to claim 1,

the method is characterized in that:

has an input shaft (20) which can be driven in rotation by mechanical power;

the first gyromagnetic device and the second gyromagnetic device are respectively provided with respective magnetic poles (21) and (22); the magnetic poles (21, 22) are both mounted on the input shaft (20) and are non-rotatable relative to the input shaft; the magnetic pole (21) of the first gyromagnetic device is provided with a core (24) and an exciting winding (25), and the magnetic pole (22) of the second gyromagnetic device is provided with a core (27) and an exciting winding (26);

the electromagnetic torque converter also has a current collector (28); in the rotating state of the gyromagnetic device, the excitation windings (25) (26) can also be supplied with electricity via the current collector (28).