CN212627633U - Switched reluctance type electromagnetic speed-regulating motor - Google Patents
Switched reluctance type electromagnetic speed-regulating motor Download PDFInfo
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- CN212627633U CN212627633U CN202021597930.7U CN202021597930U CN212627633U CN 212627633 U CN212627633 U CN 212627633U CN 202021597930 U CN202021597930 U CN 202021597930U CN 212627633 U CN212627633 U CN 212627633U
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Abstract
A switched reluctance type electromagnetic speed-regulating motor comprises an asynchronous motor, a switched reluctance type electromagnetic slip clutch, a rectifier, a switched reluctance type excitation current controller, an inner rotor position detector, a conductive slip ring and a coupler; the switch reluctance type electromagnetic slip clutch comprises an outer rotor and an inner rotor; the outer rotor rotates along with the asynchronous motor; the power of the switch reluctance type exciting current controller is less than 2% of the total speed regulation power, exciting current is provided for the outer rotor winding, an exciting magnetic field is established between the outer rotor and the inner rotor, reluctance torque is generated for the inner rotor, and the inner rotor and the mechanical load are driven to rotate at the rotating speed required by a user. The utility model has the advantages that: the speed regulation device replaces the traditional electromagnetic speed regulation motor, a frequency converter and a switched reluctance motor, is applied to the speed regulation of various mechanical loads, and has the advantages of small volume, high efficiency, low cost, firmness and durability, wide speed regulation range, no limitation of voltage and power grade, home-made parts, material saving, environmental protection and the like.
Description
Technical Field
The patent relates to an electromagnetic speed-regulating motor, in particular to a switched reluctance type electromagnetic speed-regulating motor which can be widely applied to various fields needing speed-regulating driving.
Background
The variable-frequency speed-regulating power supply has excellent speed-regulating performance, and is widely applied to the field of motor speed regulation in recent years. However, the use of variable frequency speed control power sources is limited: firstly, all electric energy transmitted to a load from a motor is subjected to power conversion through a variable-frequency speed-regulating power supply, and a core component for performing power conversion is a high-performance power electronic switching device which mostly depends on import, is expensive and faces the danger of supply interruption; secondly, the power electronic switching devices can generate large electric energy loss and are easily damaged by the impact of temperature, voltage and current, so that the fault rate of the variable frequency power supply is high; thirdly, the technical requirement of the variable frequency power supply is high, the structure is complex, and the cost is very high; fourthly, because the power electronic device works in a switching state, a large amount of harmonic pollution and electromagnetic interference are generated, the power supply quality of a power grid is seriously influenced, and the adverse effect is more serious along with the increase of the power of the variable frequency power supply; fifth, with the increasing capacity and voltage of the variable frequency power supply, the withstand voltage and capacity of the power electronic device cannot meet the requirements, and in order to solve the problem, a PWM multi-level circuit is proposed, but a contradiction between the complexity and reliability of the circuit is generated. The limitations and the contradictions are inherent contradictions of the variable-frequency speed-regulating power supply, and are difficult to overcome by only depending on the improvement of the variable-frequency speed-regulating theory and method and the perfection of the variable-frequency circuit, and another purpose needs to be found for overcoming the limitations and the contradictions. In recent years, attempts have been made to overcome these limitations and contradictions by using electromagnetic variable speed motors and switched reluctance motors.
The traditional electromagnetic speed-regulating motor (also called slip motor) is composed of three-phase alternating current asynchronous motor, electromagnetic slip clutch and exciting current controller, wherein the three-phase alternating current asynchronous motor is the prime mover of the electromagnetic speed-regulating motor and provides power for the operation of the electromagnetic speed-regulating motor, and the electromagnetic slip clutch provides exciting currents with different sizes through the exciting current controller to complete the speed-regulating function. The main advantages of the conventional electromagnetic adjustable-speed motor include: (1) the inner parts of the electromagnetic speed-regulating motor are almost all steel and iron parts except the bearing and the magnet exciting coil used for regulating the rotating speed, the structure is firm and durable, the assembly and disassembly and the maintenance are easy, the electromagnetic speed-regulating motor is suitable for long-term fault-free operation, and the total manufacturing cost and the operation and maintenance cost are far lower than those of a variable-frequency speed-regulating power supply. (2) Under the condition that the rotation speed of a prime motor is not changed, the electromagnetic speed-regulating motor regulates the rotation speed of a load by regulating the size of exciting current in a slip clutch. If the load needs to be stopped for a short time, only the excitation power supply needs to be cut off, and the dragging motor does not need to be stopped, so that the starting times of the dragging motor can be reduced, and the impact influence of the starting current of the motor on a power grid can be reduced. (3) All energy transmitted to a load by a prime motor is transmitted through a magnetic field between an inner rotor and an outer rotor of the electromagnetic slip clutch, the problem that all power in a variable-frequency speed regulation device is transmitted through a fragile and expensive power electronic switch is solved, only very small excitation magnetic field power (accounting for 0.2-1% of the total speed regulation power) needs to be transmitted through a simple and reliable excitation circuit, the voltage resistance and the power grade of the power electronic switch in the variable-frequency speed regulation device are not limited, generated harmonic waves and electromagnetic interference are ignored, and the reliability of equipment is greatly improved. However, the conventional electromagnetic speed-regulating motor also has technical defects: the torque provided by the speed regulation device is eddy current torque, larger slip power exists, the slip power is completely converted into slip eddy current loss, and the larger the speed regulation range is, the larger the slip loss eddy current is, so that the working efficiency is reduced, and the temperature rise is very high; in addition, a low speed runaway zone also exists.
The switched reluctance motor realizes speed regulation by generating reluctance torque between a stator and a rotor, has the advantages of simple structure, firmness and high efficiency, is developed in the field of motor speed regulation in recent years, but has the technical defect of large torque pulsation, and all power of the switched reluctance motor is transmitted through a power electronic switch like a variable frequency power supply, so that the application of the switched reluctance motor in high-voltage and high-power occasions is limited.
The inventor of the patent proposes an integrated switch reluctance type electromagnetic speed regulation motor patent (application number: 201310027092.8) in 2013 and obtains the authorization. The patent replaces the electromagnetic slip clutch of the traditional electromagnetic speed regulating motor with a switched reluctance motor structure, namely, the high-efficiency reluctance torque of the switched reluctance motor is utilized to replace the low-efficiency eddy current torque of the traditional electromagnetic speed regulating motor, thereby overcoming the technical defects of the traditional electromagnetic speed regulating motor. However, the switched reluctance motor structure is arranged in the rotor of the asynchronous motor, so that the structure of the electromagnetic speed-regulating motor is very complicated, and the radial dimension is greatly increased; in addition, the patent does not teach a complete system architecture including a switched reluctance type field current controller, a switched reluctance type electromagnetic slip clutch, a rotor position detector, and a conductive slip ring.
Disclosure of Invention
In order to overcome the technical defects, the electromagnetic slip clutch and the exciting current controller of the traditional electromagnetic speed regulating motor are changed into a switched reluctance type electromagnetic slip clutch and a switched reluctance type exciting current controller, an inner rotor position detector and a conductive slip ring are added, and therefore the switched reluctance type electromagnetic speed regulating motor is provided.
The technical scheme adopted by the patent for solving the technical problem is as follows:
a switched reluctance type electromagnetic speed-regulating motor comprises an asynchronous motor, a switched reluctance type electromagnetic slip clutch, a rectifier, a switched reluctance type excitation current controller, an inner rotor position detector of the switched reluctance type electromagnetic slip clutch, a conductive slip ring and a coupler.
The asynchronous motor is a traditional single-phase or three-phase asynchronous motor and is connected with an alternating current power supply.
The switched reluctance type electromagnetic slip clutch includes an outer rotor and an inner rotor.
The outer rotor comprises an outer rotor shaft, an outer rotor iron core, an outer rotor winding and an outer rotor shell; the structure of the outer rotor iron core, the outer rotor winding and the outer rotor shell is the same as that of a stator of a traditional switched reluctance motor, wherein the outer rotor shell is sleeved on an outer rotor shaft, the outer rotor iron core is fixed on the outer rotor shell, and the outer rotor winding is wound on the outer rotor iron core. The outer rotor iron core, the outer rotor winding and the outer rotor shell rotate along with the outer rotor shaft.
The outer rotor shaft is connected with the asynchronous motor shaft through a coupler, and the outer rotor shaft rotates along with the asynchronous motor shaft.
The structure of the inner rotor is the same as that of the traditional switched reluctance motor, and the inner rotor comprises an inner rotor shaft, an inner rotor bearing and an inner rotor iron core; the inner ring of the inner rotor bearing is fixed on the inner rotor shaft and rotates along with the inner rotor shaft; the outer ring of the inner rotor bearing is fixed on the outer rotor shell and rotates along with the outer rotor.
The structure of the rectifier is the same as that of a traditional rectifier, the alternating current input end of the rectifier is connected with a three-phase alternating current power supply, and the direct current output end of the rectifier is connected with the direct current input end of the switched reluctance type excitation current controller.
The power of the switched reluctance type exciting current controller is less than 2% of the total speed regulation power of the switched reluctance type electromagnetic speed regulation motor, a three-phase power current output lead of the switched reluctance type exciting current controller is connected with a three-phase power current input lead of the conductive slip ring stator, and six signal current input leads of the switched reluctance type exciting current controller are connected with six signal current output leads of the conductive slip ring stator.
The structure of the inner rotor position detector is the same as that of a traditional switched reluctance motor rotor position detector, and the inner rotor position detector comprises a shading disc and three groove-shaped photoelectric sensors; the shading disc is sleeved on the inner rotor shaft and rotates together with the inner rotor shaft, the three groove-shaped photoelectric sensors are respectively installed in the outer rotor shell, the installation interval angle is 60 degrees, and the shading disc is rotated so that the teeth of the shading disc pass through the grooves of the groove-shaped photoelectric sensors.
The conductive slip ring comprises a conductive slip ring stator, a conductive slip ring rotor, a rotation stopping sheet, conductive slip ring stator three-phase power current input leads, conductive slip ring stator six signal current output leads, conductive slip ring rotor three-phase power current output leads and conductive slip ring rotor six signal current input leads; in the conductive slip ring, a three-phase power current input lead of a conductive slip ring stator is connected with a three-phase power current output lead of a conductive slip ring rotor, and six signal current output leads of the conductive slip ring stator are connected with six signal current input leads of the conductive slip ring rotor. The conductive slip ring stator and the conductive slip ring rotor are sleeved on the outer rotor shaft; the rotation stopping sheet is fixed on the conductive slip ring stator, and the conductive slip ring stator is fixed on a machine base of the asynchronous motor through the rotation stopping sheet and does not rotate along with the outer rotor shaft; the conductive slip ring rotor rotates along with the outer rotor shaft.
And three-phase power current output wires of the conductive slip ring rotor are respectively connected with three-phase outer rotor windings of the switched reluctance type electromagnetic slip clutch.
Six signal current input wires of the conductive slip ring rotor are respectively connected with three groove-type photoelectric sensors of the inner rotor position detector.
An inner rotor shaft of the switched reluctance type electromagnetic slip clutch is connected with a load through a coupler, and the inner rotor shaft drives the load to rotate together.
The working principle of the switched reluctance type electromagnetic speed regulation motor is as follows:
(1) three-phase alternating current is provided for an asynchronous motor, the asynchronous motor starts to rotate at a rated rotating speed, and simultaneously drives an outer rotor of a switch reluctance type electromagnetic slip clutch, three groove-shaped photoelectric sensors and a conductive slip ring rotor to rotate together, and the three groove-shaped photoelectric sensors transmit detected position signals of a shading disc to six signal current input wires of a switch reluctance type excitation current controller through six signal current input wires of the conductive slip ring rotor and six signal current output wires of a conductive slip ring stator; because the shading disc is sleeved on an inner rotor shaft of the switched reluctance type electromagnetic slip clutch and rotates along with the inner rotor, the position signal of the shading disc is the position signal of the inner rotor of the switched reluctance type slip clutch.
(2) The three-phase alternating current is provided for a rectifier, the rectifier outputs direct current to a switch reluctance type excitation current controller, the switch reluctance type excitation current controller outputs excitation current with certain frequency and magnitude to a three-phase power current output lead according to a load rotating speed requirement given by a user and a detected position signal of an inner rotor, the three-phase power current input lead of a conductive slip ring stator, the conductive slip ring stator, a conductive slip ring rotor and the three-phase power current output lead of the conductive slip ring rotor are connected to a three-phase outer rotor winding of a switch reluctance type electromagnetic slip clutch, an excitation magnetic field is established between an outer rotor iron core and an inner rotor iron core, and reluctance torque is generated on the inner rotor iron core. If the user requires the load rotating speed to be equal to the rotating speed of the asynchronous motor, constant direct current can be provided for the three-phase outer rotor winding of the switched reluctance type electromagnetic slip clutch.
The beneficial effect of this patent is:
the patent replaces the electromagnetic slip clutch of the traditional electromagnetic speed regulation motor with a switched reluctance type electromagnetic slip clutch, provides a switched reluctance type electromagnetic speed regulation motor, adjusts the frequency and the magnitude of the exciting current of an outer rotor winding of the switched reluctance type electromagnetic slip clutch through a switched reluctance type exciting current controller, generates low-loss and high-efficiency reluctance torque to replace high-loss and low-efficiency eddy current torque of the traditional electromagnetic speed regulation motor, can realize stepless speed regulation, not only overcomes the technical defects of large slip loss, low efficiency, overhigh armature temperature rise, low speed out-of-control area and the like of the traditional electromagnetic speed regulation motor, but also overcomes the defect that the power required by the switched reluctance type exciting current controller is not more than 2 percent of the total speed regulation power of the switched reluctance type electromagnetic speed regulation motor, thereby overcoming the defect that all the speed regulation power of the traditional variable frequency speed regulation power supply needs to be transmitted through a power electronic switch device, the technical defects that high-voltage and high-power electronic switching devices seriously depend on foreign import, are high in price, high in failure rate, complex in structure, large in switching loss, serious in electromagnetic interference and the like are caused; the provided switched reluctance type electromagnetic speed-regulating motor can buffer the torque pulsation generated by the inner rotor of the switched reluctance type electromagnetic speed-regulating motor because the outer rotor rotates along with a prime motor (asynchronous motor), thereby overcoming the technical defect of large torque pulsation of the traditional switched reluctance motor; furthermore, the provided switched reluctance type electromagnetic speed-regulating motor has a speed-regulating range which can be below the rated rotating speed of a prime motor (asynchronous motor) and can also be above the rated rotating speed of the prime motor (asynchronous motor), so that the speed-regulating range is multiplied; in addition, the switch reluctance type electromagnetic speed-regulating motor is provided with a rectifier with small power and a switch reluctance type exciting current controller, and the main components of the switch reluctance type electromagnetic speed-regulating motor comprise an asynchronous motor, a switch reluctance type electromagnetic slip clutch and a conductive slip ring which are all made of copper and iron, so that the switch reluctance type electromagnetic speed-regulating motor is a strong item in the manufacturing industry of China, the power and voltage level of the switch reluctance type electromagnetic speed-regulating motor can be arbitrarily high, and the copper and the iron can be recycled, so that the material is saved and the environment is protected.
This patent can replace traditional electromagnetism speed governing motor, converter and switched reluctance motor, the wide application is in various mechanical load that need the speed governing drive, like fan, water pump, oil transfer pump, the lifting machine, belt conveyor, electric automobile, hybrid vehicle, boats and ships, aircraft and track traffic etc. field, have small, efficient, sturdy and durable, the speed governing scope is wide, make and use cost low, not restricted by voltage and power grade, all spare parts are domestic, advantage such as material saving environmental protection.
The following embodiments are described in detail with reference to the accompanying drawings.
Drawings
FIG. 1 is a schematic structural diagram of an embodiment of the present patent;
FIG. 2 is a cross-sectional view M-M' of the switched reluctance type electromagnetic slipping clutch of FIG. 1;
FIG. 3 is a schematic diagram of the inner rotor position detector of FIG. 1;
fig. 4 is a schematic external view of the conductive slip ring of fig. 1.
In the figure, 1-asynchronous motor; 1-1-asynchronous motor shaft; 2-switched reluctance type electromagnetic slip clutch; 2-1-outer rotor of switched reluctance type electromagnetic slip clutch; 2-1-1-an outer rotor shaft of a switched reluctance type electromagnetic slip clutch; 2-1-2-an outer rotor iron core of the switched reluctance type electromagnetic slip clutch; 2-1-3-an outer rotor winding of the switched reluctance type electromagnetic slip clutch; 2-1-4-outer rotor shell of switch reluctance type electromagnetic slip clutch; 2-2-inner rotor of switch reluctance type electromagnetic slip clutch; 2-2-1-inner rotor shaft of switch reluctance type electromagnetic slip clutch; 2-2-2-inner rotor bearing of the switched reluctance type electromagnetic slip clutch; 2-2-3-inner rotor iron core of switch reluctance type electromagnetic slip clutch; 3-a rectifier; 3-1-rectifier ac input; 3-2-rectifier direct current output end; 4-switched reluctance type excitation current controller; 4-1-direct current input end of switch magnetic resistance type exciting current controller; 4-2-three-phase power current output lead of the switched reluctance type excitation current controller; 4-3-six signal current input wires of the switched reluctance type excitation current controller; 5-an inner rotor position detector; 5-1-shutter disk of inner rotor position detector; 5-2-a slot photosensor of the inner rotor position detector; 5-3-light-shielding disc teeth of an inner rotor position detector; 6-conductive slip ring; 6-1-a conductive slip ring stator; 6-2-conductive slip ring rotor; 6-3-rotation stopping sheet; 6-4-three-phase power current input lead of conductive slip ring stator; 6-5-six signal current output leads of the conductive slip ring stator; 6-6-three-phase power current output lead of the conductive slip ring rotor; 6-7-six signal current input leads of the conductive slip ring rotor; 7. 8-a coupler; 9-load.
Detailed Description
The following detailed description of embodiments of the present patent refers to the accompanying drawings and accompanying examples. The following examples are intended to illustrate the patent, but are not intended to limit the scope of the patent. In the following detailed description, numerous specific details are set forth in order to provide a thorough understanding of the present patent, but it will be understood by those skilled in the art that the present patent may be practiced without these specific details.
The first embodiment is as follows:
referring to fig. 1 and 2, a switched reluctance type electromagnetic speed-regulating motor includes an asynchronous motor 1, a switched reluctance type electromagnetic slip clutch 2, a rectifier 3, a switched reluctance type excitation current controller 4, an inner rotor position detector 5 of the switched reluctance type electromagnetic slip clutch, a conductive slip ring 6, and couplings 7 and 8.
The asynchronous motor 1 is a traditional single-phase or three-phase asynchronous motor and is connected with an alternating current power supply AC.
The switched reluctance type electromagnetic slip clutch 2 comprises an outer rotor 2-1 and an inner rotor 2-2.
The outer rotor 2-1 comprises an outer rotor shaft 2-1-1, an outer rotor iron core 2-1-2, an outer rotor winding 2-1-3 and an outer rotor shell 2-1-4; the structure of the outer rotor iron core 2-1-2, the structure of the outer rotor winding 2-1-3 and the structure of the outer rotor shell 2-1-4 are the same as the structure of a stator of a traditional switched reluctance motor, wherein the outer rotor shell 2-1-4 is sleeved on the outer rotor shaft 2-1-1, the outer rotor iron core 2-1-2 is fixed on the outer rotor shell 2-1-4, and the outer rotor winding 2-1-3 is wound on the outer rotor iron core 2-1-2. The outer rotor iron core 2-1-2, the outer rotor winding 2-1-3 and the outer rotor shell 2-1-4 rotate together with the outer rotor shaft 2-1-1.
The outer rotor shaft 2-1-1 is connected with the asynchronous motor shaft 1-1 through a coupling 7, and the outer rotor shaft 2-1-1 rotates together with the asynchronous motor shaft 1-1.
The structure of the inner rotor 2-2 is the same as that of the rotor of the traditional switched reluctance motor, and the inner rotor comprises an inner rotor shaft 2-2-1, an inner rotor bearing 2-2-2 and an inner rotor iron core 2-2-3. The inner ring of the inner rotor bearing 2-2-2 is fixed on the inner rotor shaft 2-2-1 and rotates together with the inner rotor shaft 2-2-1; the outer ring of the inner rotor bearing 2-2-2 is fixed on the outer rotor shell 2-1-4 and rotates together with the outer rotor 2-1.
Referring to fig. 1, the structure of the rectifier 3 is the same as that of a conventional rectifier, an alternating current input end 3-1 of the rectifier 3 is connected with a three-phase alternating current power supply AC, and a direct current output end 3-2 of the rectifier 3 is connected with a direct current input end 4-1 of a switched reluctance type excitation current controller 4.
Referring to the attached drawing 1, the structure of the switched reluctance type excitation current controller 4 is the same as that of a traditional switched reluctance motor controller, the power of the switched reluctance type excitation current controller 4 is less than 2% of the total speed regulation power of the switched reluctance type electromagnetic speed regulation motor, three-phase power current output leads 4-2 of the switched reluctance type excitation current controller 4 are respectively connected with three-phase power current input leads 6-4 of a conductive slip ring stator 6-1, and six signal current input leads 4-3 of the switched reluctance type excitation current controller 4 are respectively connected with six signal current output leads 6-5 of the conductive slip ring stator 6-1.
Referring to fig. 1 and 3, the structure of the inner rotor position detector 5 is the same as that of a rotor position detector of a conventional switched reluctance motor, and comprises a shading disc 5-1 and three groove-type photoelectric sensors 5-2; the shading disc 5-1 is sleeved on the inner rotor shaft 2-2-1 and rotates along with the inner rotor shaft 2-2-1, the three groove type photoelectric sensors 5-2 are respectively arranged in the outer rotor shell 2-1-4, the installation interval angle is 60 degrees, and the shading disc 5-1 is rotated, so that the shading disc teeth 5-3 pass through grooves of the groove type photoelectric sensors 5-2.
Referring to the attached drawings 1 and 4, the conductive slip ring 6 comprises a conductive slip ring stator 6-1, a conductive slip ring rotor 6-2, a rotation stopping sheet 6-3, a conductive slip ring stator three-phase power current input lead 6-4, a conductive slip ring stator six signal current output leads 6-5, a conductive slip ring rotor three-phase power current output lead 6-6 and a conductive slip ring rotor six signal current input leads 6-7; in the conductive slip ring 6, a conductive slip ring stator three-phase power current input lead 6-4 is connected with a conductive slip ring rotor three-phase power current output lead 6-6, and six signal current output leads 6-5 of the conductive slip ring stator are connected with six signal current input leads 6-7 of the conductive slip ring rotor. The conductive slip ring stator 6-1 and the conductive slip ring rotor 6-2 are sleeved on the outer rotor shaft 2-1-1; the anti-rotation plate 6-3 is fixed on the conductive slip ring stator 6-1, and the conductive slip ring stator 6-1 is fixed on the machine base of the asynchronous motor 1 through the anti-rotation plate 6-3 and does not rotate along with the outer rotor shaft 2-1-1; the conductive slip ring rotor 6-2 rotates with the outer rotor shaft 2-1-1.
Referring to fig. 1 and 2, A, A ', B, B' and C, C 'ends of three-phase power current output wires 6-6 of the conductive slip ring rotor are respectively connected with A, A', B, B 'and C, C' ends of three-phase outer rotor windings 2-1-3 of a switched reluctance type electromagnetic slip clutch.
Referring to fig. 1 and 3, X, X ', Y, Y' and Z, Z 'ends of six signal current input wires 6-7 of the conductive slip ring rotor are respectively connected with X, X', Y, Y 'and Z, Z' ends of three groove-type photoelectric sensors 5-2 of an inner rotor position detector 5.
Referring to the attached drawing 1, an inner rotor shaft 2-2-1 of a switched reluctance type electromagnetic slip clutch 2 is connected with a load 9 through a coupler 8, and the inner rotor shaft 2-2-1 drives the load 9 to rotate together.
Referring to fig. 1 and 2, the operating principle of the switched reluctance type electromagnetic governor motor is as follows:
(1) the method comprises the steps that alternating current AC is provided for an asynchronous motor 1, the asynchronous motor 1 rotates at a rated rotating speed and drives a switch reluctance type electromagnetic slip clutch outer rotor 2-1, three groove type photoelectric sensors 5-2 and a conductive slip ring rotor 6-2 to rotate together, and X, X ', Y, Y ' and Z, Z ' ends of the three groove type photoelectric sensors 5-2 transmit detected position signals of a shading disc 5-1 to six signal current input wires 6-7 of the conductive slip ring rotor 6-2 and six signal current output wires 6-5 of the conductive slip ring stator 6-1 to six signal current input wires 4-3 of a switch reluctance type excitation current controller 4; because the shading disc 5-1 is sleeved on the inner rotor shaft 2-2-1 of the switched reluctance type electromagnetic slip clutch and rotates along with the inner rotor 2-2, the position signal of the shading disc 5-1 is the position signal of the inner rotor 2-2 of the switched reluctance type slip clutch 2.
(2) The three-phase alternating current AC is provided for the rectifier 3, the rectifier 3 provides direct current for the switch reluctance type excitation current controller 4 through the direct current output end 3-2 of the rectifier, the switch reluctance type excitation current controller 4 outputs excitation current with certain frequency and magnitude to the three-phase power current output lead 4-2 according to the rotating speed requirement of the load 9 given by a user and the detected position signal of the inner rotor 2-2, and the three-phase power current input lead 6-4 of the conductive slip ring stator, the conductive slip ring stator 6-1, the conductive slip ring rotor 6-2, the three-phase power current output lead 6-6 of the conductive slip ring rotor and the A-A ', B-B ' and C-C ' windings of the three-phase windings 2-1-3 of the switch reluctance type electromagnetic slip clutch 2 are connected, an excitation magnetic field is established between the outer rotor iron core 2-1-2 and the inner rotor iron core 2-2-3, reluctance torque is generated on the inner rotor iron core 2-2-3, and the outer rotor iron core 2-1-2 rotates at the rated rotating speed of the asynchronous motor 1 to drive the inner rotor 2-2 and the load 9 to rotate at the rotating speed given by a user; if the user requires the load rotating speed to be equal to the rotating speed of the asynchronous motor 1, only the constant direct current is provided for the three-phase outer rotor winding of the switched reluctance type electromagnetic slip clutch.
Example two:
another embodiment of a switched reluctance type of electromagnetic adjustable speed motor. The asynchronous motor 1 in the first embodiment is changed into a conventional synchronous motor.
Example three:
another embodiment of a switched reluctance type of electromagnetic adjustable speed motor. The connecting line of the asynchronous motor 1 and an alternating current power supply AC in the first embodiment is removed, and the asynchronous motor 1 is changed into a fuel engine or a gas engine, wherein the fuel engine comprises a diesel engine, a gasoline engine and a kerosene engine; the connection line 3-1 between the rectifier 3 and the alternating current power supply AC in the first embodiment is removed, and the rectifier 3 is changed into a storage battery. The embodiment can be used for a speed regulation driving system which takes a fuel engine as a prime motor, such as a hybrid electric vehicle, a full-electric ship, a full-electric airplane and the like.
Finally, it should be noted that: the above-described embodiments are merely preferred embodiments of this patent and are not intended to limit the scope of the patent. The principle and implementation of the present patent are described in the present specification by applying the above embodiments, and are only used to help understand the method and core idea of the present patent; meanwhile, for a person skilled in the art, the specific embodiments and the application range may be changed according to the idea of the present patent. Therefore, the content of the present specification should not be construed as limited to the present patent, and any modifications, equivalents, improvements, etc. made within the spirit and principle of the present patent are included in the scope of the present patent.
Claims (3)
1. A switched reluctance type electromagnetic speed-regulating motor is characterized in that: the device comprises an asynchronous motor, a switched reluctance type electromagnetic slip clutch, a rectifier, a switched reluctance type excitation current controller, an inner rotor position detector of the switched reluctance type electromagnetic slip clutch, a conductive slip ring and a coupler;
the asynchronous motor is a traditional single-phase or three-phase asynchronous motor and is connected with an alternating current power supply;
the switch reluctance type electromagnetic slip clutch comprises an outer rotor and an inner rotor;
the outer rotor comprises an outer rotor shaft, an outer rotor iron core, an outer rotor winding and an outer rotor shell; the structure of the outer rotor iron core, the outer rotor winding and the outer rotor shell is the same as that of a stator of a traditional switched reluctance motor, the outer rotor shell is sleeved on an outer rotor shaft, the outer rotor iron core is fixed on the outer rotor shell, and the outer rotor winding is wound on the outer rotor iron core; the outer rotor iron core, the outer rotor winding and the outer rotor shell rotate along with the outer rotor shaft;
the outer rotor shaft is connected with the asynchronous motor shaft through a coupler and rotates along with the asynchronous motor shaft;
the structure of the inner rotor is the same as that of the traditional switched reluctance motor, and the inner rotor comprises an inner rotor shaft, an inner rotor bearing and an inner rotor iron core; the inner ring of the inner rotor bearing is fixed on the inner rotor shaft and rotates along with the inner rotor shaft; the outer ring of the inner rotor bearing is fixed on the outer rotor shell and rotates along with the outer rotor;
the structure of the rectifier is the same as that of a traditional rectifier, the input end of the rectifier is connected with a three-phase alternating current power supply, and the output end of the rectifier is connected with the input end of a switched reluctance type excitation current controller;
the structure of the switched reluctance type exciting current controller is the same as that of a traditional switched reluctance motor controller, the power of the switched reluctance type exciting current controller is less than 2% of the total speed regulation power of the switched reluctance type electromagnetic speed regulation motor, three-phase power current output leads of the switched reluctance type exciting current controller are connected with three-phase power current input leads of a conductive slip ring stator, and six signal current input leads of the switched reluctance type exciting current controller are connected with six signal current output leads of the conductive slip ring stator;
the structure of the inner rotor position detector is the same as that of a traditional switched reluctance motor rotor position detector, and the inner rotor position detector comprises a shading disc and three groove-shaped photoelectric sensors; the shading disc is sleeved on the inner rotor shaft and rotates together with the inner rotor shaft, the three groove-shaped photoelectric sensors are arranged in the outer rotor shell, the interval angle is 60 degrees, and the shading disc is rotated to enable the teeth of the shading disc to pass through the grooves of the groove-shaped photoelectric sensors;
the conductive slip ring comprises a conductive slip ring stator, a conductive slip ring rotor, a rotation stopping sheet, conductive slip ring stator three-phase power current input leads, conductive slip ring stator six signal current output leads, conductive slip ring rotor three-phase power current output leads and conductive slip ring rotor six signal current input leads; in the conductive slip ring, a conductive slip ring stator three-phase power current input lead is connected with a conductive slip ring rotor three-phase power current output lead, and six signal current output leads of the conductive slip ring stator are connected with six signal current input leads of the conductive slip ring rotor; the conductive slip ring stator and the conductive slip ring rotor are sleeved on the outer rotor shaft; the rotation stopping sheet is fixed on the conductive slip ring stator, and the conductive slip ring stator is fixed on a machine base of the asynchronous motor through the rotation stopping sheet and does not rotate along with the outer rotor shaft; the conductive slip ring rotor rotates along with the outer rotor shaft;
the three-phase power current output lead of the conductive slip ring rotor is connected with a three-phase outer rotor winding of the switched reluctance type electromagnetic slip clutch;
six signal current input wires of the conductive slip ring rotor are connected with three groove-type photoelectric sensors of an inner rotor position detector;
an inner rotor shaft of the switched reluctance type electromagnetic slip clutch is connected with a load through a coupler, and the inner rotor shaft drives the load to rotate together.
2. A switched reluctance type electromagnetic governor motor according to claim 1, wherein: the asynchronous motor is changed into a traditional synchronous motor.
3. A switched reluctance type electromagnetic governor motor according to claim 1, wherein: removing a connecting wire between the asynchronous motor and an alternating current power supply, and changing the asynchronous motor into a fuel engine; the connecting wire between the rectifier and the AC power supply is removed, and the rectifier is changed into a storage battery.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021597930.7U CN212627633U (en) | 2020-07-28 | 2020-07-28 | Switched reluctance type electromagnetic speed-regulating motor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021597930.7U CN212627633U (en) | 2020-07-28 | 2020-07-28 | Switched reluctance type electromagnetic speed-regulating motor |
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