Permanent magnet speed regulator and power system

Abstract

The utility model relates to the technical field of permanent magnet coupling transmission, and discloses a permanent magnet speed regulator and a power system, the permanent magnet speed regulator is used for connecting a power device and a load device, and the permanent magnet speed regulator comprises a housing, an electric control module, a first electromagnetic assembly, a second electromagnetic assembly and a third electromagnetic assembly. The electric control module is suitable for being connected with a power grid or internally communicated; the first electromagnetic assembly is connected with the power equipment; the second electromagnetic assembly is rotationally arranged in the shell and connected with the load equipment, the first electromagnetic assembly is rotationally connected with the second electromagnetic assembly, the second electromagnetic assembly is connected with the electric control module, and the first electromagnetic assembly is suitable for driving the second electromagnetic assembly to rotate; the third electromagnetic assembly is connected with the shell and the electric control module, and the second electromagnetic assembly and the first electromagnetic assembly are suitable for mutual driving rotation. The permanent magnet speed regulator has the characteristics of running through a power grid and running in unhooking with the power grid, the influence of power grid fluctuation on a power system can be effectively reduced, and the influence of power grid fluctuation on production and manufacturing is further reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of permanent magnet coupling transmission, in particular to a permanent magnet speed regulator and a power system. Background Art

[0002] In modern industry, speed regulation of power systems is widely recognized as a highly effective energy-saving method. Hydraulic couplings, frequency converters, permanent magnet eddy current speed regulators, and permanent magnet coupling transmissions are widely used for speed regulation of large rotating machinery. However, hydraulic couplings are prone to oil leakage and overheating; frequency converters lack reliability, have high maintenance costs, and generate significant harmonic pollution; and permanent magnet eddy current speed regulators generate significant eddy current heat, resulting in a limited speed regulation range and inability to start under heavy loads. Consequently, most of the slip energy is lost as eddy current heat, resulting in unsatisfactory energy savings.

[0003] When the device connected to the speed regulator does not have the ability to self-start, or the direct starting impact of the power equipment is too large, and soft starting is required, it needs to be started through the power grid. The slip energy generated by the speed regulator is usually recovered and fed back to the power grid. Although this allows the slip energy to be recovered, it also creates a connection between the device and the power grid. When the external power grid fluctuates, it will directly affect the operation of the product and even cause shutdowns, seriously affecting production efficiency. Utility Model Content

[0004] In view of this, the present invention provides a permanent magnet speed regulator and a power system to solve the problem that the existing speed regulator affects the operation of the equipment when the external power grid fluctuates.

[0005] In a first aspect, the present invention provides a permanent magnet speed regulator for connecting a power device and a load device, characterized by comprising:

[0006] case;

[0007] An electronic control module, suitable for connection to the power grid or internal communication;

[0008] a first electromagnetic assembly connected to the power device;

[0009] a second electromagnetic assembly rotatably disposed in the housing and connected to the load device, the first electromagnetic assembly being rotatably connected to the second electromagnetic assembly, the second electromagnetic assembly being connected to the electronic control module, and the first electromagnetic assembly being adapted to drive the second electromagnetic assembly to rotate;

[0010] The third electromagnetic component is connected to the housing and the electronic control module, and the third electromagnetic component is suitable for driving the second electromagnetic component or the first electromagnetic component to rotate.

[0011] Beneficial effects: The permanent magnet speed regulator can be connected to the power grid or realize its own internal connectivity through the electronic control module. When connected to the power grid, the power grid serves as the driving end, and the power of the power grid flows to the third electromagnetic component. The third electromagnetic component will drive the second electromagnetic component to rotate, thereby driving the load equipment to operate. The rotation of the second electromagnetic component will also drive the first electromagnetic component to rotate, thereby driving the power equipment to operate. When the electronic control module is internally connected, it forms an energy-closed state. The power equipment serves as the driving end. The power equipment will drive the first electromagnetic component to rotate, and then drive the second electromagnetic component to rotate to drive the load equipment, realizing mutual drive between the first electromagnetic component and the second electromagnetic component. When there is a speed difference between the first electromagnetic component and the second electromagnetic component, slip energy will be generated. The slip energy can be transmitted to the third electromagnetic component through the electronic control module. The third electromagnetic component serves as a self-powered motor in the permanent magnet speed regulator, and then the third electromagnetic component will also jointly drive the rotation of the second electromagnetic component, realizing the recovery and utilization of slip energy, thereby reducing the energy output of the power equipment to maintain the operation of the load equipment and saving the energy use of the power equipment. This permanent magnet speed regulator has the characteristics of being able to operate through the power grid and also being able to operate decoupled from the power grid. It can effectively reduce the impact of power grid fluctuations on the power system, thereby reducing the impact of power grid fluctuations on production and manufacturing.

[0012] In an optional embodiment, the permanent magnet speed regulator further includes a bracket, which is rotatably connected to the housing, and the bracket is rotatably connected to one of the first electromagnetic assembly or the second electromagnetic assembly, and is fixedly connected to the other one.

[0013] Beneficial effect: The first electromagnetic component and the second electromagnetic component are connected by the bracket, so that the relative rotation between the first electromagnetic component and the second electromagnetic component is realized, and then the function of the first electromagnetic component and the second electromagnetic component being able to drive each other is realized. The connection method is simple and reliable, so that the permanent magnet speed regulator can drive the load equipment more stably in the energy closed state when facing power grid fluctuations.

[0014] In an optional embodiment, the first electromagnetic assembly includes a first rotor and a first rotating shaft, the second electromagnetic assembly includes a second rotor and a second rotating shaft, the first rotor is connected to the power device via the first rotating shaft, the second rotor is connected to the load device and the electronic control module via the second rotating shaft, the first rotating shaft and the second rotating shaft are coaxially arranged and rotatably connected, and the first rotor is coupled to the second rotor.

[0015] Beneficial effect: The first rotor is coupled with the second rotor, so that no matter it is in the grid-driven state or the energy-closed state, the first rotor can be started first to drive the second rotor, or the second rotor can be started first to drive the first rotor, thereby realizing the operation of the power equipment and the load equipment. At the same time, the second rotor is connected to the electronic control module, which realizes the recovery and reuse of slip energy when the first rotor and the second rotor generate slip energy, thereby realizing energy saving in the energy-closed state operation.

[0016] In an optional embodiment, the bracket is rotatably connected to the first rotating shaft, the first rotor is fixedly connected to the first rotating shaft, the second rotor is fixedly connected to the inner side wall of the bracket, and the second rotating shaft is fixedly connected to the bracket and rotatably connected to the shell.

[0017] Beneficial effect: During operation, the first shaft and the first rotor rotate synchronously, and the second shaft and the second rotor are connected to the bracket, so that the second shaft, the second rotor and the bracket rotate synchronously, thereby realizing mutual drive between the first electromagnetic component and the second electromagnetic component.

[0018] In an optional embodiment, the second electromagnetic assembly further includes a slip ring carbon brush assembly, and the second rotor is electrically connected to the electronic control module via the second rotating shaft and the slip ring carbon brush assembly.

[0019] Beneficial effect: The collector ring carbon brush assembly realizes the effect of transmitting the slip energy in the form of electrical energy to the electronic control module when the second electromagnetic assembly is in a rotating state, thereby realizing the transmission of slip energy from the rotating second electromagnetic assembly to the electronic control module.

[0020] In an optional embodiment, the slip ring carbon brush assembly includes a slip ring and several carbon brushes, the slip ring is fixedly arranged on the circumferential side of the second rotating shaft and is electrically connected to the second rotor, the carbon brush is fixedly connected to the housing and connected to the electronic control module, and the end of the carbon brush close to the slip ring is slidingly connected to the circumferential side of the slip ring.

[0021] Beneficial effect: The slip ring rotates with the second rotating shaft to realize the synchronous rotation of the slip ring and the second rotor, thereby realizing the electrical connection between the second rotor and the slip ring during rotation. The carbon brush connected to the electronic control module maintains a sliding connection with the slip ring during the rotation of the slip ring, and the slip energy is transmitted from the second rotor through the slip ring and the carbon brush to the electronic control component.

[0022] In an optional embodiment, the second electromagnetic assembly further includes a lead wire, the bracket further includes a through hole, the lead wire is passed through the through hole, and the second rotor is electrically connected to the slip ring through the lead wire.

[0023] Beneficial effect: Since the second rotor and the slip ring achieve synchronous rotation, the second rotor and the slip ring can be simply and reliably connected through lead wires to transmit slip energy.

[0024] In an optional embodiment, the bracket is fixedly connected to the first rotating shaft, the first rotor is fixedly connected to the inner side wall of the bracket, the second rotating shaft is rotationally connected to the bracket and to the shell, and the second rotor is fixedly connected to the second rotating shaft.

[0025] Beneficial effect: the first rotating shaft, the first rotor and the bracket rotate synchronously, and the second rotating shaft and the second rotor can rotate relative to the bracket, and can also realize mutual drive between the first electromagnetic component and the second electromagnetic component.

[0026] In an optional embodiment, the third electromagnetic assembly includes a third rotor and a stator, the third rotor is connected to the outer side wall of the bracket, the stator is connected to the housing and the electronic control module, and the stator is coupled to the third rotor.

[0027] Beneficial effect: Whether in grid-driven mode or in energy self-enclosed state, the stator can receive the slip energy converted into electrical energy transmitted by the electronic control component, so that the third rotor rotates and drives the bracket to rotate, thereby achieving full or partial energy supply to the second electromagnetic component.

[0028] In a second aspect, the present invention further provides a power system, comprising a power device, a load device and the above-mentioned permanent magnet speed regulator, characterized in that the power device and the load device are connected via the permanent magnet speed regulator.

[0029] Beneficial effects: The power system connects the power equipment and the load equipment through the above-mentioned permanent magnet speed regulator, realizing the function of driving the load equipment through the power grid or driving the load equipment through the power equipment, so that the load equipment can operate smoothly even when decoupled from the power grid, reducing the impact of external power grid fluctuations on the load equipment, and the permanent magnet speed regulator can recover slip energy, reduce energy loss when the power equipment drives the load equipment, and save energy and reduce emissions. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0031] Figure 1This is a cross-sectional view of a permanent magnet speed regulator according to an embodiment of the present utility model;

[0032] Figure 2 A cross-sectional view of another permanent magnet speed regulator according to an embodiment of the present utility model;

[0033] Figure 3 This is a schematic diagram of the connection between the electric control module and the power grid according to an embodiment of the present utility model;

[0034] Figure 4 This is a schematic diagram of the internal connections of the electric control module according to an embodiment of the present utility model;

[0035] Figure 5 This is a schematic diagram of a power system according to an embodiment of the present invention.

[0036] Description of reference numerals:

[0037] 100, power equipment; 200, load equipment; 300, power grid;

[0038] 1. Shell;

[0039] 2. Electronic control module; 21. Switch; 22. Four-quadrant inverter;

[0040] 3. First electromagnetic assembly; 31. First rotor; 32. First rotating shaft;

[0041] 4. Second electromagnetic assembly; 41. Second rotor; 42. Second rotating shaft; 43. Slip ring and carbon brush assembly; 431. Slip ring; 432. Carbon brush; 44. Lead wire;

[0042] 5. Third electromagnetic assembly; 51. Third rotor; 52. Stator;

[0043] 6. Bracket;

[0044] 7. Bearings. DETAILED DESCRIPTION

[0045] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the embodiments described are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making creative efforts shall fall within the scope of protection of the present invention.

[0046] The following combination Figures 1 to 5 , describing the embodiments of the present utility model.

[0047] According to an embodiment of the present invention, on the one hand, a permanent magnet speed regulator is provided for connecting a power device 100 and a load device 200, comprising a housing 1, an electronic control module 2, a first electromagnetic assembly 3, a second electromagnetic assembly 4, and a third electromagnetic assembly 5. The electronic control module 2 is adapted to be connected to a power grid 300 or to be internally connected thereto; the first electromagnetic assembly 3 is connected to the power device 100; the second electromagnetic assembly 4 is rotatably disposed within the housing 1 and connected to the load device 200; the first electromagnetic assembly 3 is rotatably connected to the second electromagnetic assembly 4; the second electromagnetic assembly 4 is connected to the electronic control module 2, and the first electromagnetic assembly 3 is adapted to drive the second electromagnetic assembly 4 to rotate; the third electromagnetic assembly 5 is connected to the housing 1 and to the electronic control module 2, and the second electromagnetic assembly 4 and the first electromagnetic assembly 3 are adapted to drive each other to rotate.

[0048] The permanent magnet speed regulator provided in this embodiment can be connected to the power grid 300 or realize its own internal communication through the electronic control module 2. When connected to the power grid 300, the power grid 300 serves as the driving end, and the electric energy of the power grid 300 flows to the third electromagnetic component 5. The third electromagnetic component 5 will drive the second electromagnetic component 4 to rotate, thereby driving the load device 200 to operate. The rotation of the second electromagnetic component 4 will also drive the first electromagnetic component 3 to rotate, thereby driving the power device 100 to operate. The electronic control module 2 forms an energy closed state when it is internally connected. The power device 100 serves as the driving end, and the power device 100 will drive the first electromagnetic component 3 to rotate, thereby driving the load device 200 to operate. The second electromagnetic assembly 4 is driven to rotate to drive the load device 200, realizing mutual drive between the first electromagnetic assembly 3 and the second electromagnetic assembly 4. When a speed difference occurs between the first electromagnetic assembly 3 and the second electromagnetic assembly 4, slip energy is generated. This slip energy can be transmitted to the third electromagnetic assembly 5 through the electronic control module 2. The third electromagnetic assembly 5 acts as a self-powered motor in the permanent magnet speed regulator, and then the third electromagnetic assembly 5 also drives the rotation of the second electromagnetic assembly 4, realizing the recycling of slip energy, thereby reducing the energy output of the power device 100 to maintain the operation of the load device 200 and saving the energy use of the power device 100. The permanent magnet speed regulator has the characteristics of being able to operate through the power grid 300 and being able to operate decoupled from the power grid 300, which can effectively reduce the impact of fluctuations in the power grid 300 on the power system, thereby reducing the impact of fluctuations in the power grid 300 on production and manufacturing.

[0049] It should be noted that the power taken from the power end by the existing eddy current speed regulator is equal to the sum of the slip energy and the load consumption power, wherein the slip energy is all converted into heat and dissipated. Compared with the existing eddy current speed regulator, the permanent magnet speed regulator provided in this embodiment still follows the equal power transmission in the energy closed state, wherein the slip energy is re-input to the load end through the electronic control module. Under the condition that the power consumed by the load end remains unchanged, since the slip energy can be recovered and re-input to the load end, even if the loss caused by the resistance and the like, which accounts for a very small proportion, is taken into account, the permanent magnet speed regulator can still achieve P 输入 ≈P 输出 , that is, the power taken from the power end is equal to the power consumed by the load, so that the permanent magnet speed regulator provided in this embodiment can reduce the power taken from the power end to achieve energy saving, and compared with the winding type speed regulator, it can effectively avoid the influence of power grid fluctuations.

[0050] Specifically, the permanent magnet speed regulator also includes a bracket 6, which is rotatably connected to the housing 1. The bracket 6 is rotatably connected to either the first electromagnetic assembly 3 or the second electromagnetic assembly 4, and is fixedly connected to the other. The bracket 6 connects the first and second electromagnetic assemblies 3 and 4, enabling relative rotation between the first and second electromagnetic assemblies 3 and 4, thereby enabling mutual drive between the first and second electromagnetic assemblies 3 and 4. This simple and reliable connection method ensures that the permanent magnet speed regulator can more stably drive the load device 200 in an energy-closed state even when facing fluctuations in the power grid 300.

[0051] Furthermore, the first electromagnetic assembly 3 includes a first rotor 31 and a first rotating shaft 32, and the second electromagnetic assembly 4 includes a second rotor 41 and a second rotating shaft 42. The first rotor 31 is connected to the power device 100 via the first rotating shaft 32, and the second rotor 41 is connected to the load device 200 and the electronic control module 2 via the second rotating shaft 42. The first rotating shaft 32 and the second rotating shaft 42 are coaxially arranged and rotationally connected, and the first rotor 31 and the second rotor 41 are coupled. The first rotor 31 and the second rotor 41 are coupled so that, whether in the grid 300-driven state or the energy-closed state, the first rotor 31 can start first and drive the second rotor 41, or the second rotor 41 can start first and drive the first rotor 31, thereby achieving operation of the power device 100 and the load device 200. At the same time, the second rotor 41 is connected to the electronic control module 2, which realizes the recovery and reuse of slip energy generated by the first rotor 31 and the second rotor 41, thereby achieving energy saving in the energy-closed state.

[0052] In one embodiment, the bracket 6 is rotationally connected to the first rotating shaft 32, the first rotor 31 is fixedly connected to the first rotating shaft 32, the second rotor 41 is fixedly connected to the inner side wall of the bracket 6, and the second rotating shaft 42 is fixedly connected to the bracket 6 and rotationally connected to the housing 1. During operation, the first rotating shaft 32 and the first rotor 31 rotate synchronously, and the second rotating shaft 42 and the second rotor 41 are connected to the bracket 6, so that the second rotating shaft 42, the second rotor 41, and the bracket 6 rotate synchronously, thereby realizing mutual drive between the first electromagnetic assembly 3 and the second electromagnetic assembly 4.

[0053] Specifically, the permanent magnet speed regulator also includes several bearings 7, which are respectively arranged between the first rotating shaft 32 and the bracket 6, between the bracket 6 and the shell 1, and between the second rotating shaft 42 and the shell 1, thereby ensuring the smooth rotation of the first electromagnetic component 3 and the second electromagnetic component 4 and reducing energy loss.

[0054] Specifically, the second electromagnetic assembly 4 also includes a slip ring carbon brush assembly 43. The second rotor 41 is electrically connected to the electronic control module 2 via the second rotating shaft 42 and the slip ring carbon brush assembly 43. The slip ring carbon brush assembly 43 enables the second electromagnetic assembly 4 to transmit slip energy in the form of electrical energy to the electronic control module 2 when the second electromagnetic assembly 4 is rotating, thereby achieving the transmission of slip energy from the rotating second electromagnetic assembly 4 to the electronic control module 2.

[0055] Specifically, the slip ring carbon brush assembly 43 includes a slip ring 431 and a plurality of carbon brushes 432. The slip ring 431 is fixedly arranged on the circumference of the second rotating shaft 42 and is electrically connected to the second rotor 41. The carbon brush 432 is fixedly connected to the housing 1 and connected to the electronic control module 2. The end of the carbon brush 432 close to the slip ring 431 is slidably connected to the circumference of the slip ring 431. The slip ring 431 rotates with the second rotating shaft 42 to achieve synchronous rotation of the slip ring 431 and the second rotor 41, thereby achieving electrical connection between the second rotor 41 and the slip ring 431 during rotation. The carbon brush 432 connected to the electronic control module 2 maintains a sliding connection with the slip ring 431 during the rotation of the slip ring 431. The slip energy is finally transmitted from the second rotor 41 through the slip ring 431 and the carbon brush 432 to the electronic control assembly.

[0056] Furthermore, the second electromagnetic assembly 4 includes a lead wire 44, and the bracket 6 includes a through hole. The lead wire 44 is inserted into the through hole, and the second rotor 41 is electrically connected to the slip ring 431 via the lead wire 44. Because the second rotor 41 and the slip ring 431 rotate synchronously, the lead wire 44 can simply and reliably connect the second rotor 41 and the slip ring 431 to transmit slip energy.

[0057] Specifically, the third electromagnetic assembly 5 includes a third rotor 51 and a stator 52. The third rotor 51 is connected to the outer wall of the bracket 6, and the stator 52 is connected to the housing 1 and the electronic control module 2. The stator 52 is coupled to the third rotor 51. Whether in the grid 300 drive mode or the energy self-enclosed state, the stator 52 can receive the slip energy transmitted by the electronic control assembly and converted into electrical energy, causing the third rotor 51 to rotate and drive the bracket 6 to rotate, thereby fully or partially energizing the second electromagnetic assembly 4.

[0058] In this embodiment, the first rotor 31 , the second rotor 41 and the third rotor 51 are squirrel cage rotors, but in other embodiments they may also be permanent magnet rotors or solid induction rotors.

[0059] Specifically, the electronic control module 2 includes a switch 21 that can selectively connect the electronic control module 2 with the power grid 300 , or connect the electronic control module 2 itself, so that the slip energy transmitted by the second rotor 41 reaches the stator 52 through the slip ring carbon brush assembly 43 .

[0060] Specifically, the electric control module 2 further includes a four-quadrant frequency converter 22 . The four-quadrant frequency converter 22 is disposed between the stator 52 and the switch 21 . The four-quadrant frequency converter 22 can realize bidirectional current flow.

[0061] In another embodiment, the bracket 6 is fixedly connected to the first rotating shaft 32, the first rotor 31 is fixedly connected to the inner side wall of the bracket 6, the second rotating shaft 42 is rotationally connected to the bracket 6 and the housing 1, and the second rotor 41 is fixedly connected to the second rotating shaft 42. The first rotating shaft 32 and the first rotor 31 rotate synchronously with the bracket 6, and the second rotating shaft 42 and the second rotor 41 can rotate relative to the bracket 6, thereby achieving mutual drive between the first electromagnetic assembly 3 and the second electromagnetic assembly 4.

[0062] According to an embodiment of the present invention, on the other hand, a power system is provided, including a power device 100, a load device 200 and the above-mentioned permanent magnet speed regulator, wherein the power device 100 and the load device 200 are connected via the permanent magnet speed regulator.

[0063] The power system connects the power device and the load device 200 through the above-mentioned permanent magnet speed regulator, realizing the function of driving the load device 200 through the power grid 300 or driving the load device 200 through the power device 100. This allows the load device 200 to operate smoothly even when decoupled from the power grid 300, reducing the impact of fluctuations in the external power grid 300 on the load device 200. In addition, the permanent magnet speed regulator can recover slip energy, reduce energy loss when the power device 100 drives the load device 200, and save energy and reduce emissions.

[0064] In this embodiment, the power device 100 is an energy storage flywheel, and the load device 200 is a synchronous condenser. In other embodiments, the power device 100 and the load device 200 may also be other devices.

[0065] The general working principle of the power system provided in this embodiment is as follows:

[0066] Neither the energy storage flywheel nor the synchronous condenser itself has the ability to start. During the system startup phase, the permanent magnet speed regulator is connected to the power grid 300. Current flows into the stator 52, causing the third rotor 51 to rotate and drive the bracket 6 and the second rotor 41 to rotate, thereby starting the synchronous condenser connected to the second rotating shaft 42. At the same time, the rotation of the second rotor 41 will also drive the first rotor 31 to rotate, and the first rotating shaft 32 will drive the energy storage flywheel to rotate.

[0067] After the synchronous condenser speed reaches a certain value, the synchronous condenser can be connected to the power grid 300, and the permanent magnet speed regulator can be decoupled from the power grid 300 to prevent the permanent magnet speed regulator from being affected by the power grid 300. At this time, the synchronous condenser drives the second rotor 41 to rotate continuously under the energy supply of the power grid 300, thereby causing the first rotor 31 to rotate continuously. It should be noted that the energy storage flywheel should be in a vacuum environment and supported by the magnetic suspension bearing 7, which can minimize energy loss.

[0068] When a fault fluctuation occurs in the power grid 300, the energy storage flywheel will release the stored energy: the permanent magnet speed regulator will reduce the speed of the energy storage flywheel, thereby reducing the kinetic energy of the flywheel. This lost kinetic energy will be transferred to the synchronous condenser through the coupling between the first rotor 31 and the second rotor 41, so that the synchronous condenser maintains its own constant speed and ensures the normal operation of the synchronous condenser.

[0069] In addition, the speed difference between the second rotor 41 and the first rotor 31 will form slip energy and be transmitted to the electronic control module 2. The electronic control module 2 transmits this part of the slip energy to the stator 52, and the stator 52 then drives the third rotor 51 to rotate. Since the third rotor 51 and the second rotor 41 are both arranged on the bracket 6, the energy release of the first rotor 31, that is, the energy storage flywheel at the power equipment 100 end, can be reduced while ensuring the normal operation of the load equipment 200 end, so that the energy storage flywheel can extend the energy supply time and improve the energy transmission efficiency.

[0070] Although the embodiments of the present invention have been described with reference to the accompanying drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations shall fall within the scope defined by the appended claims.

Claims

1. A permanent magnet speed regulator for connecting a power device (100) and a load device (200), characterized in that: include: Housing (1); An electric control module (2), adapted to be connected to a power grid (300) or to be internally connected thereto; A first electromagnetic component (3) connected to the power device (100); a second electromagnetic component (4) rotatably disposed in the housing (1) and connected to the load device (200); the first electromagnetic component (3) and the second electromagnetic component (4) are rotatably connected; the second electromagnetic component (4) is connected to the electric control module (2); and the first electromagnetic component (3) is suitable for driving the second electromagnetic component (4) to rotate; The third electromagnetic component (5) is connected to the housing (1) and the electric control module (2), and the third electromagnetic component (5) is suitable for driving the second electromagnetic component (4) or the first electromagnetic component (3) to rotate.

2. The permanent magnet speed regulator according to claim 1, characterized in that: The permanent magnet speed regulator further comprises a bracket (6), wherein the bracket (6) is rotatably connected to the housing (1), the bracket (6) is rotatably connected to one of the first electromagnetic assembly (3) or the second electromagnetic assembly (4), and is fixedly connected to the other one.

3. The permanent magnet speed regulator according to claim 2, characterized in that: The first electromagnetic assembly (3) includes a first rotor (31) and a first rotating shaft (32), and the second electromagnetic assembly (4) includes a second rotor (41) and a second rotating shaft (42). The first rotor (31) is connected to the power device (100) via the first rotating shaft (32), and the second rotor (41) is connected to the load device (200) and the electronic control module (2) via the second rotating shaft (42). The first rotating shaft (32) and the second rotating shaft (42) are coaxially arranged and rotatably connected, and the first rotor (31) and the second rotor (41) are coupled and connected.

4. The permanent magnet speed regulator according to claim 3, characterized in that: The bracket (6) is rotatably connected to the first rotating shaft (32), the first rotor (31) is fixedly connected to the first rotating shaft (32), the second rotor (41) is fixedly connected to the inner side wall of the bracket (6), and the second rotating shaft (42) is fixedly connected to the bracket (6) and rotatably connected to the housing (1).

5. The permanent magnet speed regulator according to claim 4, characterized in that: The second electromagnetic assembly (4) further includes a collector ring carbon brush assembly (43), and the second rotor (41) is electrically connected to the electric control module (2) via the second rotating shaft (42) and the collector ring carbon brush assembly (43).

6. The permanent magnet speed regulator according to claim 5, characterized in that: The collector ring carbon brush assembly (43) includes a collector ring (431) and a plurality of carbon brushes (432). The collector ring (431) is fixedly arranged on the circumferential side of the second rotating shaft (42) and electrically connected to the second rotor (41). The carbon brush (432) is fixedly connected to the housing (1) and connected to the electronic control module (2). One end of the carbon brush (432) close to the collector ring (431) is slidably connected to the circumferential side of the collector ring (431).

7. The permanent magnet speed regulator according to claim 6, characterized in that: The second electromagnetic assembly (4) further includes a lead wire (44), the bracket (6) further includes a through hole, the lead wire (44) is passed through the through hole, and the second rotor (41) is electrically connected to the collector ring (431) through the lead wire (44).

8. The permanent magnet speed regulator according to claim 3, characterized in that: The bracket (6) is fixedly connected to the first rotating shaft (32), the first rotor (31) is fixedly connected to the inner side wall of the bracket (6), the second rotating shaft (42) is rotationally connected to the bracket (6) and the housing (1), and the second rotor (41) is fixedly connected to the second rotating shaft (42).

9. The permanent magnet speed regulator according to any one of claims 2 to 8, characterized in that: The third electromagnetic assembly (5) includes a third rotor (51) and a stator (52), wherein the third rotor (51) is connected to the outer wall of the bracket (6), the stator (52) is connected to the housing (1) and the electronic control module (2), and the stator (52) is coupled to the third rotor (51).

10. A power system comprising a power device (100), a load device (200) and a permanent magnet speed regulator according to any one of claims 1 to 9, characterized in that: The power device (100) and the load device (200) are connected via the permanent magnet speed regulator.

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