CN219627546U - Excitation and armature double-stator motor - Google Patents
Excitation and armature double-stator motor Download PDFInfo
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- CN219627546U CN219627546U CN202223323871.6U CN202223323871U CN219627546U CN 219627546 U CN219627546 U CN 219627546U CN 202223323871 U CN202223323871 U CN 202223323871U CN 219627546 U CN219627546 U CN 219627546U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/64—Electric machine technologies in electromobility
Abstract
The utility model provides an excitation and armature double-stator motor, which comprises a machine shell and a rotating shaft rotatably arranged on the machine shell, and is characterized in that a rotor assembly with two working surfaces and an annular body is arranged on the rotating shaft, one working surface of the rotor assembly is matched with and not connected with an excitation stator assembly fixed on one side of the machine shell, and the other working surface of the rotor assembly is matched with and not connected with an armature stator assembly fixed on the other side of the machine shell. Through setting up excitation stator module, need not to set up carbon brush, collecting ring or brushless exciter again, can drive the pivot through rotor module and rotate, and then drag or drive the mechanical equipment operation that links to each other with the pivot as synchronous motor, control is convenient, and the cost is low, and is efficient, the rotational speed is invariable, and the moment of torsion is big, need not to be equipped with expensive complicated starting drive, improves the operational reliability of motor, stability, reduces the trouble.
Description
Technical Field
The utility model belongs to the technical field of motor design and manufacture, and particularly relates to an excitation, armature and double-stator motor.
Background
When the alternating current motor is powered by the power grid, current flows through the stator winding to generate a rotating magnetic field with the rotating speed being in direct proportion to the frequency, and when the frequency is constant, the rotating speed of the rotating magnetic field is also constant, and the rotating speed of the rotating magnetic field is called synchronous rotating speed. The conventional synchronous motor consists of a stator and a rotor, wherein the rotor is a permanent magnet steel or a direct current excitation magnetic pole, the large-capacity synchronous motor is an electric excitation synchronous motor, a collector ring and a carbon brush are mainly adopted to introduce direct current into a rotor winding for excitation, a cross-linked stator magnetic field and a cross-linked rotor magnetic field are established, the rotor rotates and generates a rotating magnetic field, the rotating magnetic field induces alternating current in the stator winding, when the rotating speed of the rotor is equal to the synchronous rotating speed (namely the rotating speed of the magnetic field), the frequency of the alternating current induced in the stator winding is the same as the frequency of a power grid, grid connection can be realized when the voltage of a machine end is the same as the voltage of the power grid through adjusting excitation current, and the motor can stably realize the input or output of electric energy with the power grid. However, the conventional electrically excited synchronous motor has high failure rate of the collecting ring and the carbon brush, large operation and maintenance workload and high manufacturing cost, so that the synchronous motor is not selected in most cases. Under normal conditions, the synchronous motor is electrified at zero rotation speed, namely, when the motor drives mechanical equipment to run, electromagnetic torque cannot be generated, when the motor drives mechanical equipment to run, a set of starting device is needed to drive the rotor to rotate, excitation is only needed when the rotation speed of the rotor is increased to the synchronous rotation speed, and stable electromagnetic torque drives the mechanical equipment to run stably at the synchronous rotation speed, so that when the motor is used as a motor, a set of starting device is needed to be equipped, and the system structure becomes complex.
Disclosure of Invention
In order to simplify the system structure and ensure the stable operation of the motor, the utility model provides the excitation and armature double-stator motor which has the advantages of simple structure, low cost, convenient installation and stable operation.
The utility model is realized by the following technical scheme: the double-stator motor comprises a shell and a rotating shaft which is rotatably arranged on the shell, and is characterized in that a rotor assembly which is provided with two working surfaces and takes the shape of a ring body is arranged on the rotating shaft, one working surface of the rotor assembly is matched with and not connected with an excitation stator assembly fixed on one side of the shell, and the other working surface of the rotor assembly is matched with and not connected with an armature stator assembly fixed on the other side of the shell, so that under the action of a magnetic field generated by electrifying the armature stator assembly, the rotor assembly can be rotated to drive the rotating shaft to rotate so as to output mechanical energy outwards, and the motor is used; on the contrary, after the exciting stator assembly is excited by direct current, a static magnetic field is established, when the rotor assembly rotates under the drive of external force, alternating current is induced on the windings of the rotor assembly, the alternating current can generate a rotating magnetic field with the rotating speed being larger than the rotating speed of the rotor on the working surface of the rotor assembly corresponding to the armature stator assembly, the rotating magnetic field induces alternating current in the windings of the armature stator assembly, when the rotating magnetic field speed is synchronous with the rotating speed of the rotor, the frequency of the alternating current induced by the windings of the armature stator assembly is the same as the frequency of a power grid, and the armature windings can be connected with the power grid to output electric energy, so that the generator is used.
The exciting stator assembly and the armature stator assembly are arranged into annular bodies which are matched with the rotor assembly, the annular bodies are respectively fixed on the left inner wall and the right inner wall of the shell to form radial annular bodies at the left end and the right end, the rotor assembly is positioned between the exciting stator assembly and the armature stator assembly to form a radial annular body in the middle, and the left radial working surface and the right radial working surface of the rotor assembly are respectively matched with and not connected with the corresponding exciting stator assembly and armature stator assembly.
The exciting stator assembly and the armature stator assembly are axially and parallelly fixed on the inner wall of the casing to form parallel axial outer ring bodies, the rotor assemblies are arranged in series on the rotating shaft to form axial inner cylinders, the cylindrical surfaces of the axial inner cylinders are axial working surfaces, and the axial working surfaces of the two rotors are respectively matched with and not connected with the inner side working surfaces of the axial outer ring bodies of the corresponding exciting stator assembly and armature stator assembly.
The rotor assembly comprises a bracket sleeved on the rotating shaft, and a rotor core fixedly arranged on the bracket and provided with a wire slot on the surface; the rotor core is made of low-loss high-permeability materials, the rotor core is provided with a wire groove with a notch on a working surface, the slot is the same as that of a conventional motor, a rotor coil is embedded in the wire groove of the rotor core, and the coils on one or two cores are connected in series and then integrally short-circuited to form a rotor winding.
The exciting stator assembly comprises an exciting magnetic pole connected with the inner side wall of the shell, wherein the exciting magnetic pole is an exciting stator iron core and an exciting stator winding arranged on the exciting stator iron core; the exciting stator core is provided with a wire slot or a bulge, the coil is embedded into the wire slot or wound on the bulge of the core, the coil is connected to form an exciting stator winding, and an exciting magnetic pole is formed after direct current is electrified; the excitation pole may also be made of magnetized permanent magnet steel.
The armature stator assembly comprises an armature stator core which is connected with the inner side wall of the shell and provided with a wire slot, and an armature stator winding which is embedded in the wire slot of the armature stator core; the armature stator core is made of low-loss high-permeability materials, is provided with a wire groove with a notch on a working surface, which is the same as that of a conventional motor, and is formed into an armature stator winding after coils embedded in the wire groove are connected.
The two ends of the rotating shaft are respectively arranged on the shell through bearings with seats, and the rotor assembly is fixed on the rotating shaft so that the rotor assembly rotates along with the rotating shaft or the rotating shaft is driven to rotate through the rotor assembly.
Compared with the prior art, the utility model has the following advantages:
by arranging the excitation stator assembly, the rotor assembly can drive the rotating shaft to rotate without arranging a carbon brush, a collector ring or a brushless exciter, and then the rotor assembly is used as a synchronous motor to drag or drive mechanical equipment connected with the rotating shaft to operate; or driven by mechanical equipment such as a water turbine, a diesel engine and the like to rotate the rotating shaft, so that the rotor assembly becomes a synchronous generator along with the rotation of the rotating shaft, and the generated electric energy is transmitted outwards or is combined into a power grid; wherein:
when the motor is used, the winding short circuit of the rotor assembly is equal to that of an asynchronous motor, the winding of the armature stator assembly generates a rotating magnetic field after being electrified, the rotating magnetic field induces current in the short-circuited rotor winding, and then drives the rotor to rotate as well as the asynchronous motor, and then drives the rotating shaft to rotate, so that corresponding mechanical equipment connected with the rotating shaft is dragged or driven to rotate, after the proper rotating speed is reached, the exciting stator assembly is excited by direct current, and the motor enters the synchronous rotating speed (namely, the rotating speed of the rotor is the same as that of the rotating magnetic field), so that the motor becomes a synchronous motor, and the double-stator synchronous motor is very convenient to start as the asynchronous motor without complex and expensive starting devices; meanwhile, the synchronous motor has the characteristics of high running efficiency, high power density, constant rotating speed and high torque, has the characteristics of convenient starting, no brush and low system requirement of the asynchronous motor, and does not need to additionally provide a complex starting device of a conventional synchronous motor;
the device can also be used as a generator: the motor is connected with the rotating shaft, such as a water turbine, a diesel engine and the like, drives the rotating shaft to rotate, simultaneously excites direct current to the exciting stator assembly, drives the rotor to rotate through the rotating shaft, then induces alternating current in the rotor winding, the alternating current can generate a rotating magnetic field with the rotating speed larger than the rotating speed of the rotor on a rotor working surface corresponding to the armature stator assembly, the rotating magnetic field can induce the alternating current on the winding of the armature stator assembly, when the synchronous rotating speed (namely, the rotating speed of the rotor is the same as the rotating speed of the rotating magnetic field), the frequency of the armature stator assembly is the same as the frequency of a power grid, and the electric energy can be output to the power grid without an electric brush and a collector ring, meanwhile, because of the isolation of the rotor, the generator can not generate large impact current when the generator is connected with the power grid, the influence on the power grid is small, and the grid connection requirement and difficulty are reduced.
In a word, the motor is convenient to control, low in manufacturing cost, high in efficiency, constant in rotating speed and large in torque, when the motor is used as a motor, expensive and complex starting devices are not needed to be equipped, the structures such as a collecting ring and a carbon brush of the motor are omitted, the running reliability and the running stability of the motor are improved, faults are reduced, when the motor is used as a generator, electric energy can be output to a power grid, reactive compensation is not needed to be provided for the power grid, and the application range is wide.
Drawings
In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings which are required in the description of the embodiments or the prior art will be briefly described, it being obvious that the drawings in the description below are only some embodiments of the utility model, and that other drawings may be obtained from these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of the structure of the present utility model.
Fig. 2 is a schematic diagram of another embodiment of the present utility model.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without any inventive effort, are intended to be within the scope of the utility model. In the following description, for clarity of presentation of the structure and operation of the present utility model, description will be made with reference to the accompanying drawings by means of various directional words, but words such as "front", "rear", "left", "right", "upper", "lower" and the like should be interpreted as words of convenience and not as limiting words.
The utility model provides an excitation, armature, double-stator motor or generator, which comprises a shell 4 and a rotating shaft 24 rotatably arranged on the shell 4, wherein a rotor assembly 2 with two working surfaces is arranged on the rotating shaft 24, one working surface of the rotor assembly 2 is matched with but not connected with an excitation stator assembly 1 fixed on the shell 4, and the other working surface is matched with but not connected with an armature stator assembly 3 fixed on the shell 4.
As shown in fig. 1, the exciting stator assembly 1 and the armature stator assembly 3 are radial annular bodies, which are respectively fixed on the left and right inner walls of the casing 4 to form radial annular bodies at the left and right ends, the rotor assembly 2 is positioned between the exciting stator assembly 1 and the armature stator assembly 3 and forms a radial annular body in the middle, and the left and right radial annular working surfaces of the rotor assembly 2 are respectively matched with and not connected with the corresponding exciting stator assembly 1 and armature stator assembly 3;
the rotor assembly 2 comprises a bracket 23 sleeved on a rotating shaft 24, a rotor core 21 fixedly arranged on the bracket 23 and provided with a wire slot, and a rotor winding 22 embedded in the wire slot of the rotor core 21; the rotor core 21 is made of a low-loss high-permeability material, a wire slot with the same embedded coil as that of a conventional motor is arranged on the rotor core, the notch of the wire slot is arranged on the left radial annular working surface and the right radial annular working surface, and the coils are embedded in the wire slot and are connected in series to form a rotor winding 22 which is in integral short circuit.
The exciting stator assembly 1 comprises an exciting magnetic pole connected with the left inner wall of the shell 4, wherein the exciting magnetic pole is an exciting stator core 13 and an exciting stator winding 12 arranged on the exciting stator core 13; the exciting stator iron core 13 is provided with a wire slot or a bulge which is the same as a conventional motor and is provided with a coil, the coil is embedded into the wire slot or is wound on the iron core bulge, the coil is connected to form an exciting stator winding 12, the exciting stator winding 12 is connected with a direct current power supply through an outgoing line, and an exciting magnetic pole is formed after direct current.
The armature stator assembly 3 comprises an armature stator core 31 which is connected with the inner wall of the right side of the shell 4 and is provided with a wire slot, and an armature stator winding 32 which is embedded in the wire slot of the armature stator core 31; the armature stator core 31 is made of low-loss high-permeability material, is provided with a wire slot which is the same as a conventional motor and is embedded with a coil, the notch of the wire slot is arranged on a working surface, the coil is connected to form an armature stator winding 32, and the armature stator winding is connected with an alternating current power supply through an outgoing line to input or output alternating current power.
The two ends of the rotating shaft 24 are mounted on the casing 4 through bearings with seats, and the rotor assembly 2 is mounted on the rotating shaft 24, so that the rotor assembly 2 rotates along with the rotating shaft 24, or the rotating shaft 24 is driven to rotate through the rotor assembly 2.
As shown in fig. 2, the exciting stator assembly 1 and the armature stator assembly 3 are axially fixed on the inner wall of the casing 4 in parallel through a connecting member 11 to form two parallel axial outer ring bodies, the rotor assembly 2 is arranged on the rotating shaft 24 in series to form two parallel axial inner cylinder bodies, the cylindrical surfaces of the two inner cylinder bodies are axial working surfaces, and the axial working surfaces of the two rotors are respectively matched with and not connected with the corresponding axial outer ring bodies of the exciting stator assembly 1 and the corresponding axial outer ring bodies of the armature stator assembly 3. Wherein the construction of the field stator assembly 1, the armature stator assembly 3 and the rotor assembly 2 is conventional or identical to the construction of fig. 1.
When the motor is used, the armature stator winding 3 connected with a power grid is electrified with alternating current to generate a rotating magnetic field, the rotating magnetic field induces current in the winding 22 of the short-circuited rotor assembly 2 to generate electromagnetic torque to drive the rotor assembly 2 to rotate, meanwhile, after the exciting stator assembly 1 is electrified with direct current excitation, the alternating current is also induced in the rotating rotor assembly 2, when the rotating speed of the rotor assembly 1 reaches synchronous rotating speed, the alternating current frequency induced by the rotor windings 22 in the rotor assemblies 2 corresponding to the exciting stator assembly 1 and the armature stator assembly 3 is the same, the motor forms a stable electromagnetic system, the rotating shaft 24 rotates at a constant rotating speed, and mechanical power is output outwards to drive other equipment to rotate.
When the motor is used as a generator, the motor drives the rotor assembly 2 to rotate through the rotating shaft 24, the exciting stator assembly 1 is excited by direct current, the rotor assembly 2 generates a rotating magnetic field, alternating current is induced in the windings 32 of the armature stator assembly 3, and when the synchronous rotating speed is reached, the frequency of the alternating current induced in the windings of the armature stator assembly 3 is the same as the frequency of a power grid, so that electric energy can be transmitted to the power grid.
When the motor is used as a generator at synchronous rotation speed, the output voltage of the armature stator assembly 3 can be changed by adjusting the magnitude of the direct current supplied to the exciting stator assembly 1. In general, when power fluctuates, the voltage of the power grid also fluctuates, but when the direct current (namely, exciting current) supplied to the exciting stator assembly 1 is quickly adjusted, the output voltage of the armature stator assembly 3 can be returned to rated voltage, so that the voltage of an outgoing line of the armature stator assembly 3 is stabilized, and stable electric energy is transmitted to the power grid; when the motor is used as a motor, the output or input working condition of the motor can be changed by adjusting the direct current supplied to the exciting stator assembly 1, so that the motor can run under the optimal working condition.
The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the utility model.
Claims (7)
1. The double-stator motor includes casing and rotating shaft set on the casing, and features that the rotating shaft has rotor assembly with two work surfaces and ring, one work surface of the rotor assembly is connected to the exciting stator assembly fixed to one side of the casing and the other work surface is connected to the armature stator assembly fixed to the other side of the casing.
2. The excited armature double-stator motor of claim 1, wherein the excited stator assembly and the armature stator assembly are annular bodies corresponding to the rotor assembly, the excited stator assembly and the armature stator assembly are respectively fixed on the left inner wall and the right inner wall of the casing to form radial annular bodies at the left end and the right end, the rotor assembly is positioned between the excited stator assembly and the armature stator assembly to form a radial annular body in the middle, and the left radial working surface and the right radial working surface of the rotor assembly are respectively matched with and not connected with the excited stator assembly and the armature stator assembly.
3. The exciting and armature double-stator motor of claim 1, wherein the exciting stator assembly and the armature stator assembly are axially fixed on the inner wall of the casing in parallel to form a parallel axial outer ring body, the rotor assembly is arranged in series on the rotating shaft to form an axial inner cylinder, the cylindrical surface of the axial inner cylinder is an axial working surface, and the axial working surfaces of the two rotors are respectively matched with and not connected with the inner working surfaces of the corresponding axial outer ring bodies of the exciting stator assembly and the armature stator assembly.
4. The exciting and armature double-stator motor according to claim 1, wherein the rotor assembly comprises a bracket sleeved on the rotating shaft, and a rotor core fixedly installed on the bracket and provided with a wire slot on the surface; the rotor core is made of low-loss high-permeability materials, a wire groove with a notch on a working surface is formed in the rotor core, a rotor coil is embedded in the wire groove of the rotor core, and coils on one or two cores are connected in series and then integrally short-circuited to form a rotor winding.
5. The field, armature double stator electric machine of claim 1 wherein the field stator assembly comprises field poles connected to the inside wall of the housing, the field poles being field stator cores and field stator windings disposed on the field stator cores; the exciting stator core is provided with a wire slot or a bulge, the coil is embedded into the wire slot or wound on the bulge of the core, the coil is connected to form an exciting stator winding, and the exciting stator winding is electrified with direct current to form an exciting magnetic pole.
6. The excitation, armature double-stator motor according to claim 1, wherein the armature stator assembly comprises an armature stator core connected to an inner side wall of the casing and having a wire slot formed thereon, and an armature stator winding fitted in the wire slot of the armature stator core; the armature stator core is made of low-loss high-permeability materials, a wire groove with a notch on a working face is formed in the armature stator core, and coils embedded in the wire groove are connected to form an armature stator winding.
7. The exciting and armature double-stator motor according to claim 1, wherein both ends of the rotating shaft are respectively mounted on the casing through bearings with seats, and the rotor assembly is fixed on the rotating shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223323871.6U CN219627546U (en) | 2022-12-12 | 2022-12-12 | Excitation and armature double-stator motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223323871.6U CN219627546U (en) | 2022-12-12 | 2022-12-12 | Excitation and armature double-stator motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219627546U true CN219627546U (en) | 2023-09-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223323871.6U Active CN219627546U (en) | 2022-12-12 | 2022-12-12 | Excitation and armature double-stator motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219627546U (en) |
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2022
- 2022-12-12 CN CN202223323871.6U patent/CN219627546U/en active Active
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