CN108649749B - Switched reluctance motor with water injection type winding and multidirectional self-circulation ventilation system - Google Patents
Switched reluctance motor with water injection type winding and multidirectional self-circulation ventilation system Download PDFInfo
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- CN108649749B CN108649749B CN201810608489.9A CN201810608489A CN108649749B CN 108649749 B CN108649749 B CN 108649749B CN 201810608489 A CN201810608489 A CN 201810608489A CN 108649749 B CN108649749 B CN 108649749B
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- 238000004804 winding Methods 0.000 title claims abstract description 65
- 238000009423 ventilation Methods 0.000 title claims abstract description 34
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 24
- 238000002347 injection Methods 0.000 title claims abstract description 17
- 239000007924 injection Substances 0.000 title claims abstract description 17
- 238000001816 cooling Methods 0.000 claims abstract description 120
- 239000000498 cooling water Substances 0.000 claims abstract description 56
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 44
- 229910052802 copper Inorganic materials 0.000 claims abstract description 44
- 239000010949 copper Substances 0.000 claims abstract description 44
- 239000000112 cooling gas Substances 0.000 claims description 26
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 20
- 239000003973 paint Substances 0.000 claims description 5
- 238000000034 method Methods 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 3
- 230000017525 heat dissipation Effects 0.000 description 6
- 230000008646 thermal stress Effects 0.000 description 4
- 239000007787 solid Substances 0.000 description 2
- 229910000976 Electrical steel Inorganic materials 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K9/00—Arrangements for cooling or ventilating
- H02K9/08—Arrangements for cooling or ventilating by gaseous cooling medium circulating wholly within the machine casing
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/12—Stationary parts of the magnetic circuit
- H02K1/20—Stationary parts of the magnetic circuit with channels or ducts for flow of cooling medium
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/32—Rotating parts of the magnetic circuit with channels or ducts for flow of cooling medium
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/18—Casings or enclosures characterised by the shape, form or construction thereof with ribs or fins for improving heat transfer
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Motor Or Generator Cooling System (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
Abstract
The invention discloses a switched reluctance motor with a water injection type winding and a multidirectional self-circulation ventilation system, belongs to the technical field of motors, and aims to solve the problem that the conventional high-capacity switched reluctance motor is high in temperature. The rotor shaft is installed on the base through a bearing, a rotor core is installed on the rotor shaft, a stator core is installed on the inner wall of the base, a stator copper winding is installed on the stator core, the rotor core is located in the stator core, a mounting gap is reserved between the rotor core and the stator core, a stator direct cooling water pipe is located in the stator copper winding, two ends of the stator direct cooling water pipe penetrate through the base respectively and are connected with an inlet and an outlet of a direct cooling water driving device, a rotor direct cooling air duct is arranged in the rotor core, a stator direct cooling air duct is arranged in the stator core, a sheet heat-conducting plate is further arranged on the inner wall of the base, and the sheet heat-conducting plate corresponds to the stator direct cooling water. The invention enhances the cooling effect of each component in the high-capacity switch reluctance motor, has simple structure and is convenient to realize.
Description
Technical Field
The invention relates to a reluctance motor, in particular to a switched reluctance motor with a water injection type winding and a multidirectional self-circulation ventilation system, and belongs to the technical field of motors.
Background
The switched reluctance motor has the characteristics of high reliability, low manufacturing cost, simple and firm structure and the like, and compared with other motors, the switched reluctance motor has no winding and permanent magnet on a rotor, so that the switched reluctance motor is more suitable for running under the conditions of high temperature and high speed, and has the advantages of small starting current, large starting torque and the like. However, as the capacity of the switched reluctance motor is continuously increased, the temperature rise of the stator core and the stator copper winding of the switched reluctance motor is obviously increased, and the conventional switched reluctance motor ventilation cooling system cannot timely dissipate the heat of each component in the motor, so that the temperature of the stator core and the stator copper winding is rapidly increased, even exceeds the allowable temperature rise of insulation, the safe and stable operation of the high-capacity switched reluctance motor is seriously threatened, and meanwhile, the development of the high-capacity switched reluctance motor is limited.
In order to effectively take away the heat of the stator copper winding of the switched reluctance motor and reduce the temperature of the stator iron core and the rotor iron core of the switched reluctance motor, the switched reluctance motor with a novel water injection type winding and a multidirectional self-circulation ventilation system can be adopted, the heat of the stator copper winding can be effectively taken away through cooling water in a water pipe in the stator copper winding, and the temperature of the stator copper winding is obviously reduced. By utilizing the novel multidirectional self-circulation ventilation cooling system in the switched reluctance motor, the flowing speed of cooling gas in a stator region and a rotor region can be accelerated, the contact area of the cooling gas with a stator core and a rotor core is increased, the temperature of the stator core and the rotor core is effectively reduced, the power density and the reliability of the switched reluctance motor are improved, and the large-capacity switched reluctance motor can be safely and stably operated for a long time.
Disclosure of Invention
The invention aims to provide a switched reluctance motor with a water injection type winding and a multidirectional self-circulation ventilation system so as to solve the technical problem.
The switched reluctance motor with the water injection type winding and the multidirectional self-circulation ventilation system comprises a stator iron core, a rotor shaft, a stator copper winding, a stator direct-cooling water pipe, a rotor direct-cooling ventilation channel, a stator direct-cooling water driving device, a sheet-shaped heat-conducting plate, a machine base and a bearing;
the rotor shaft is installed on the base through a bearing, a rotor core is installed on the rotor shaft, a stator core is installed on the inner wall of the base, a stator copper winding is installed on the stator core, the rotor core is located in the stator core, an installation gap is reserved between the rotor core and the stator core, a stator direct cooling water pipe is located in the stator copper winding, two ends of the stator direct cooling water pipe penetrate through the base respectively and are connected with an inlet and an outlet of a direct cooling water driving device, a rotor direct cooling air duct is arranged in the rotor core, a stator direct cooling air duct is arranged in the stator core, a sheet heat conducting plate is further arranged on the inner wall of the base and corresponds to the stator direct cooling water driving device outside the base, and a stator groove is formed in the stator core.
Preferably: the direct cooling air duct of the rotor comprises a direct cooling air duct in the axial direction of the rotor and a direct cooling air duct in the radial direction of the rotor, the yoke part of the rotor core is provided with the direct cooling air duct in the axial direction of the rotor and the direct cooling air duct in the radial direction of the rotor, and the direct cooling air duct in the axial direction of the rotor and the direct cooling air duct in the radial direction of the rotor are communicated with each other.
Preferably: the stator direct cooling air channel comprises a stator tooth axial direct cooling air channel, a stator yoke axial direct cooling air channel and a stator radial direct cooling air channel, the stator tooth axial direct cooling air channel and the stator yoke axial direct cooling air channel are communicated with the stator radial direct cooling air channel, and the stator yoke axial direct cooling air channel is located below the stator slot.
Preferably: the stator copper windings are arranged in the stator slots, the flowing directions of cooling water in the stator direct-cooling water pipes in all the stator copper windings are the same, insulating paint is coated on the outer surfaces of the stator direct-cooling water pipes, the sections of the stator direct-cooling water pipes are circular, and the diameter of the circular shape is 5-10 mm; the flow speed of cooling water in the stator direct cooling water pipe is 2-4 m/s; the number of the rotor axial direct cooling air ducts formed in the yoke part of the rotor core is 1, the cross section of each rotor axial direct cooling air duct is circular, and the diameter of each circle is 12mm-22 mm.
Preferably: the number of the stator radial direct cooling air ducts is the sum of the number of the stator tooth axial direct cooling air ducts and the number of the stator yoke axial direct cooling air ducts, the stator direct cooling air ducts and the rotor direct cooling air ducts are symmetrical left and right by taking the central section of the switched reluctance motor as the center, the sheet-shaped heat-conducting plates are uniformly distributed along the inner surface of the machine base, and the number of the sheet-shaped heat-conducting plates is 20-30; the height of the sheet heat-conducting plate is equal to or less than the height of the stator core yoke.
Preferably: the area of the inlet of the axial direct-cooling air channel of the rotor is increased, and the area of the cross section of the axial direct-cooling air channel of the rotor is gradually reduced along the axial direction.
Preferably: the connecting part of the stator axial direct cooling air duct in the stator core and the stator radial direct cooling air duct is a fillet.
Preferably: the sheet heat conducting plate is convex.
Preferably: the flow directions of cooling water in the stator straight cooling water pipes in the adjacent stator slots are opposite.
Compared with the existing product, the invention has the following effects: the invention discloses a switched reluctance motor with a water injection type winding and a multidirectional self-circulation ventilation system, which is characterized in that a water pipe is buried in a stator copper winding of the switched reluctance motor, a stator direct-cooling ventilation channel is arranged in the stator core, a rotor direct-cooling ventilation channel is arranged in a rotor core, and the circumferential rotation action of a salient pole rotor is utilized to form the switched reluctance motor with the water injection type winding and the multidirectional self-circulation ventilation system. The cooling water in the water pipe can effectively take away the heat of the stator copper winding, the thermal stress of the stator copper winding in the axial direction is reduced, and the temperature of the stator copper winding is obviously reduced. The cooling air flowing in the multidirectional self-circulation ventilation system can effectively take away the heat of the stator core and the rotor core, the heat dissipation coefficients of the surfaces of the stator core and the rotor core are increased, the temperature of the stator core and the rotor core is reduced, and the temperature of the stator copper winding can be further reduced through the novel multidirectional self-circulation ventilation system. The switched reluctance motor with the water injection type winding and the multidirectional self-circulation ventilation system can effectively enhance the heat dissipation capacity of the stator iron core, the rotor iron core and the stator copper winding, improve the utilization rate of cooling gas in the switched reluctance motor, obviously reduce the temperature of the stator iron core, the rotor iron core and the stator copper winding of the switched reluctance motor, improve the cooling capacity and the density power of the switched reluctance motor, reduce an external centrifugal fan of the high-capacity switched reluctance motor, save the materials of silicon steel sheets and winding copper of the switched reluctance motor iron core, reduce the cost and effectively improve the heat resistance capacity in the switched reluctance motor.
Drawings
FIG. 1 is a schematic diagram of a switched reluctance machine with water-flooded windings and a multidirectional self-circulating ventilation system according to the present invention;
FIG. 2 is a circumferential cross-sectional view of a switched reluctance machine stator core with a water injection type winding and a multidirectional self-circulating ventilation system in accordance with the present invention;
fig. 3 is an axial sectional view of a switched reluctance motor with a water injection type winding and a multidirectional self-circulation ventilation system according to a second embodiment of the present invention;
fig. 4 is a circumferential cross-sectional view of a stator core of a switched reluctance motor having a water-filled winding and a multidirectional self-circulation ventilation system according to a third embodiment of the present invention;
fig. 5 is an axial sectional view of a switched reluctance motor with a water-filled winding and a multidirectional self-circulation ventilation system according to a fourth embodiment of the present invention;
fig. 6 is an axial sectional view of a switched reluctance motor with a water injection type winding and a multidirectional self-circulation ventilation system according to a fifth embodiment of the present invention.
In the figure: 1-a stator core; 2-a rotor core; 3-a rotor shaft; 4-stator copper windings; 5-stator direct cooling water pipe; 6-rotor direct cooling air duct; 7-rotor direct cooling air duct; 8-stator direct cooling water driving device; 9-a sheet-like thermally conductive plate; 10-a machine base; 11-bearings.
Detailed Description
Preferred embodiments of the present invention are explained in detail below with reference to the accompanying drawings.
First embodiment, as shown in fig. 1 and 2, arrows indicate the flow direction of cooling air in a switched reluctance motor having a water injection type winding and a multi-directional self-circulation ventilation system. The switched reluctance motor with the water injection type winding and the multidirectional self-circulation ventilation system comprises a stator iron core 1, a rotor iron core 2, a rotor shaft 3, a stator copper winding 4, a stator direct cold water pipe 5, a rotor direct cold ventilation channel 6, a stator direct cold ventilation channel 7, a stator direct cold water driving device 8, a sheet-shaped heat conducting plate 9, a machine base 10 and a bearing 11;
the rotor shaft 3 is installed on a machine base 10 through a bearing 11, a rotor core 2 is installed on the rotor shaft 3, a stator core 1 is installed on the inner wall of the machine base 10, a stator copper winding 4 is installed on the stator core 1, the rotor core 2 is located in the stator core 1, a mounting gap is reserved between the rotor core and the stator core, a stator direct cooling water pipe 5 is located in the stator copper winding 4, two ends of the stator direct cooling water pipe 5 penetrate through the machine base 10 respectively to be connected with an inlet and an outlet of a direct cooling water driving device 8, a rotor direct cooling air duct 6 is arranged in the rotor core 2, a stator direct cooling air duct 7 is arranged in the stator core 1, a sheet-shaped heat conduction plate 9 is further arranged on the inner wall of the machine base 10, the sheet-shaped heat conduction plate 9 corresponds to the stator direct cooling water driving device 8 outside the.
Further: the rotor direct cooling air duct 6 comprises a rotor axial direct cooling air duct 6-1 and a rotor radial direct cooling air duct 6-2, the yoke part of the rotor core 2 is provided with the rotor axial direct cooling air duct 6-1 and the rotor radial direct cooling air duct 6-2, and the rotor axial direct cooling air duct 6-1 and the rotor radial direct cooling air duct 6-2 are communicated with each other.
Further: the stator direct cooling air duct 7 comprises a stator tooth portion axial direct cooling air duct 7-1, a stator yoke portion axial direct cooling air duct 7-2 and a stator radial direct cooling air duct 7-3, the stator tooth portion axial direct cooling air duct 7-1 and the stator yoke portion axial direct cooling air duct 7-2 are communicated with the stator radial direct cooling air duct 7-3, and the stator yoke portion axial direct cooling air duct 7-2 is located below the stator slots.
Further: the stator copper windings 4 are arranged in the stator slots, the flowing directions of cooling water in the stator direct cooling water pipes 5 in all the stator copper windings 4 are the same, insulating paint is coated on the outer surfaces of the stator direct cooling water pipes 5, the sections of the stator direct cooling water pipes 5 are circular, and the diameter of the circular shape is 5-10 mm; the flow speed of cooling water in the stator direct cooling water pipe 5 is 2-4 m/s; the rotor core 2 is of a salient pole structure, the number of the rotor axial direct cooling air ducts 6-1 arranged on the yoke part of the rotor core 2 is 1, the cross section of each rotor axial direct cooling air duct 6-1 is circular, and the diameter of each circle is 12mm-22 mm.
Further: the number of the stator radial direct cooling air ducts 7-3 is the sum of the number of the stator tooth part axial direct cooling air ducts 7-1 and the number of the stator yoke part axial direct cooling air ducts 7-2, the stator direct cooling air ducts 7 and the rotor direct cooling air ducts 6 are bilaterally symmetrical by taking the central section of the switched reluctance motor as the center, the sheet-shaped heat conduction plates 9 are uniformly distributed along the inner surface of the base 10, and the number of the sheet-shaped heat conduction plates 9 is 20-30; the height of the plate-like heat-conducting plate 9 is equal to or less than the height of the yoke of the stator core 1.
A stator direct cooling water pipe 5 with the outer surface coated with insulating paint is additionally arranged in a stator copper winding 4, and meanwhile, a stator direct cooling ventilation duct 7 and a rotor direct cooling ventilation duct 6 are respectively arranged in the existing solid stator iron core and the solid rotor iron core, so that the switched reluctance motor with the water injection type winding and the multidirectional self-circulation ventilation system is formed. The heat of the stator copper winding 4 can be directly taken away by cooling water in the stator direct cooling water pipe 5 in the stator copper winding 4, the temperature of the stator copper winding 4 and the thermal stress in the axial direction are obviously reduced, the contact area between the stator direct cooling water pipe 5 and the stator copper winding 4 can be effectively increased by coating insulating paint on the outer surface of the stator direct cooling water pipe 5, the heat dissipation efficiency of the stator copper winding 4 is increased, and the temperature rise of the stator copper winding 4 under different working conditions of the switched reluctance motor can be effectively inhibited by adjusting the cooling water speed in the stator direct cooling water pipe 5; the rotation action of a salient pole rotor of the switched reluctance motor is utilized to drive the cooling gas in the switched reluctance motor to flow, the cooling gas firstly reaches a radial direct cooling air duct 7-3 of a stator, then reaches an axial direct cooling air duct 7-1 of a stator tooth part and an axial direct cooling air duct 7-2 of a stator yoke part, the temperature of a stator iron core 1 is obviously reduced through the cooling action of the gas in the stator iron core 1, the thermal stress of the stator iron core 1 in the axial direction is reduced, the cooling gas in the stator iron core 1 can further reduce the temperature of a stator copper winding 4 through the tooth part of the stator iron core 1, the cooling gas flowing out from an outlet of the axial direct cooling air duct 7-2 of the stator yoke part reaches a sheet-shaped heat conducting plate 9, the heat of the cooling gas can be fully taken away by the sheet-shaped heat conducting plate 9, and the heat of the sheet-shaped heat conducting plate 9, the temperature of cooling gas in the switched reluctance motor is effectively reduced, the cooling gas with the reduced temperature reaches the axial direct cooling air duct 6-1 of the rotor and then enters the radial direct cooling air duct 6-2 of the rotor, the surface heat dissipation coefficient of the inner part of the rotor core 2 is obviously improved, the temperature of the rotor core 2 is effectively reduced, the cooling gas coming out of the radial direct cooling air duct 6-2 of the rotor enters an air gap between the stator core 1 and the rotor core 2 and finally enters the radial direct cooling air duct 7-3 of the stator, and the circulation of the cooling gas is completed. In addition, due to the salient pole structure of the rotor of the switched reluctance motor, the rotor drives cooling gas to move circumferentially when rotating, the flow speed of the cooling gas around the surfaces of the stator core 1 and the rotor core 2 is increased, the surface heat dissipation coefficients of the outer surfaces of the stator core 1 and the rotor core 2 are improved, the temperatures of the stator core 1 and the rotor core 2 are further reduced, and the heat resistance inside the switched reluctance motor is effectively improved.
The second embodiment is as follows: the present embodiment is described with reference to fig. 3, and differs from the first embodiment in that the inlet area of the direct cooling air duct 6-1 in the rotor axial direction is increased to 130mm2～400mm2The cross-sectional area of the rotor axial direct cooling air duct 6-1 is gradually reduced along the axial direction, so that the flow of fluid entering the rotor core 2 can be increased, the circulation speed of cooling gas in the switched reluctance motor is increased, the utilization rate of the cooling gas is improved, and the temperatures of the stator core 1, the rotor core 2 and the stator copper winding 3 in the switched reluctance motor are reduced. Other components and connection relationships are the same as those in the first embodiment.
The third concrete implementation mode: the present embodiment is described with reference to fig. 4, and the difference between the present embodiment and the first embodiment is that the number of stator direct cooling air ducts 7 in the stator core 1 is increased, the cooling effect of the yoke portion of the stator core 1 is enhanced, the heat dissipation coefficient of the inner surface of the stator core 1 is improved, the ability of cooling gas to take away heat of the stator core 1 is effectively improved, and the temperature of the stator core 1 is further reduced. Other components and connection relationships are the same as those in the first embodiment.
The fourth concrete implementation mode: the present embodiment is described with reference to fig. 5, and the difference between the present embodiment and the first embodiment is that the joint of the stator axial direction direct cooling air duct and the stator radial direction direct cooling air duct in the stator core 1 is a round angle, so that the ventilation loss of the cooling gas in the stator core 1 is reduced, the circulation speed of the cooling gas in the switched reluctance motor is increased, and the temperature of the stator core 1 is further reduced. Other components and connection relationships are the same as those in the first embodiment.
The fifth concrete implementation mode: the present embodiment is described with reference to fig. 6, and the difference between the present embodiment and the first embodiment is that the sheet-shaped heat conducting plate 9 is convex, so that the contact area between the cooling gas and the sheet-shaped heat conducting plate 9 is increased, the heat of the cooling gas in the switched reluctance motor can be effectively taken away, and the temperatures of the stator core 1, the rotor core 2 and the stator copper winding 4 are further reduced. Other components and connection relationships are the same as those in the first embodiment.
The sixth specific implementation mode: the difference between the first embodiment and the second embodiment is that the flowing directions of cooling water in the stator direct cooling water pipes 5 in adjacent stator slots are opposite, so that the temperature of the stator region is more uniformly distributed along the axial direction, the thermal stress of the stator region in the axial direction is reduced, and the temperatures of the stator core 1 and the stator copper winding 4 are further reduced. Other components and connection relationships are the same as those in the first embodiment.
The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (1)
1. Switched reluctance motor with water injection type winding and multidirectional self-loopa ventilation system, its characterized in that: the direct-cooling water motor comprises a stator iron core (1), a rotor iron core (2), a rotor shaft (3), a stator copper winding (4), a stator direct-cooling water pipe (5), a rotor direct-cooling air duct (6), a stator direct-cooling air duct (7), a stator direct-cooling water driving device (8), a sheet-shaped heat-conducting plate (9), a machine base (10) and a bearing (11); a rotor shaft (3) is mounted on a machine base (10) through a bearing (11), a rotor core (2) is mounted on the rotor shaft (3), a stator core (1) is mounted on the inner wall of the machine base (10), a stator copper winding (4) is mounted on the stator core (1), the rotor core (2) is located in the stator core (1), a mounting gap is reserved between the rotor core and the stator core, a stator direct cooling water pipe (5) is located in the stator copper winding (4), two ends of the stator direct cooling water pipe (5) respectively penetrate through the machine base (10) to be connected with an inlet and an outlet of a direct cooling water driving device (8), a rotor direct cooling air duct (6) is arranged in the rotor core (2), the rotor direct cooling air duct (6) comprises a rotor axial direct cooling air duct (6-1) and a rotor radial direct cooling air duct (6-2), and the rotor axial direct cooling air duct (6-1) and the rotor radial direct cooling air duct (6-2) are communicated with each other; a stator direct cooling air duct (7) is arranged in a stator core (1), the stator direct cooling air duct (7) comprises a stator tooth axial direct cooling air duct (7-1), a stator yoke axial direct cooling air duct (7-2) and a stator radial direct cooling air duct (7-3), the stator tooth axial direct cooling air duct (7-1) and the stator yoke axial direct cooling air duct (7-2) are communicated with the stator radial direct cooling air duct (7-3), the stator yoke axial direct cooling air duct (7-2) is positioned below a stator slot, the number of the stator radial direct cooling air ducts (7-3) is the sum of the number of the stator tooth axial direct cooling air ducts (7-1) and the number of the stator yoke axial direct cooling air ducts (7-2), the stator direct cooling air duct (7) and the rotor direct cooling air duct (6) are bilaterally symmetrical by taking the central section of the switched reluctance motor as the center, the inner wall of the machine base (10) is also provided with a sheet-shaped heat-conducting plate (9), the sheet-shaped heat-conducting plate (9) corresponds to the stator direct cooling water driving device (8) outside the machine base (10), and a stator slot is formed in the stator iron core (1);
the stator copper windings (4) are arranged in stator slots, the flowing directions of cooling water in the stator direct cooling water pipes (5) in all the stator copper windings (4) are the same, insulating paint is coated on the outer surfaces of the stator direct cooling water pipes (5), the cross sections of the stator direct cooling water pipes (5) are circular, and the diameter of the circular cross section is 5mm-10 mm; the flow speed of cooling water in the stator direct cooling water pipe (5) is 2-4 m/s; the number of the rotor axial direct cooling air ducts (6-1) arranged on the yoke part of the rotor core (2) is 1, the cross section of each rotor axial direct cooling air duct (6-1) is circular, and the diameter of each circle is 12-22 mm; the flaky heat conducting plates (9) are uniformly distributed along the inner surface of the machine base (10), and the number of the flaky heat conducting plates (9) is 20-30; the height of the sheet heat-conducting plate (9) is equal to or less than the height of the yoke of the stator core (1);
the method comprises the steps that after a salient pole rotor of the switched reluctance motor rotates, cooling gas is driven to reach a stator radial direct cooling air duct (7-3) firstly, then reaches a stator tooth axial direct cooling air duct (7-1) and a stator yoke axial direct cooling air duct (7-2) along two axial opposite directions by taking the central section of the switched reluctance motor as the center, the cooling gas flowing out of outlets of the stator tooth axial direct cooling air duct (7-1) and the stator yoke axial direct cooling air duct (7-2) respectively passes through a stator end copper winding and a sheet-shaped heat conducting plate (9) and then reaches inlets of rotor axial direct cooling air ducts (6-1) on two sides of the switched reluctance motor along the radial direction, the cooling gas flows along two axial opposite directions after entering the rotor axial direct cooling air duct (6-1) and then enters the rotor radial direct cooling air duct (6-2) along the radial direction, cooling gas from the radial direct cooling ventilation channel (6-2) of the rotor enters an air gap between the stator core (1) and the rotor core (2) and finally enters the radial direct cooling ventilation channel (7-3) of the stator to complete the circulation of the cooling gas;
the area of the inlet of the rotor axial direct cooling air duct (6-1) is increased, and the area of the cross section of the rotor axial direct cooling air duct (6-1) is gradually reduced along the axial direction;
the connecting part of the axial direct cooling air channel of the stator in the stator core (1) and the radial direct cooling air channel of the stator is a round angle;
the sheet heat-conducting plate (9) is convex;
the flow directions of cooling water in the stator straight cooling water pipes (5) in the adjacent stator slots are opposite.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810608489.9A CN108649749B (en) | 2018-06-13 | 2018-06-13 | Switched reluctance motor with water injection type winding and multidirectional self-circulation ventilation system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810608489.9A CN108649749B (en) | 2018-06-13 | 2018-06-13 | Switched reluctance motor with water injection type winding and multidirectional self-circulation ventilation system |
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| Publication Number | Publication Date |
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| CN108649749A CN108649749A (en) | 2018-10-12 |
| CN108649749B true CN108649749B (en) | 2020-03-03 |
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| CN201810608489.9A Active CN108649749B (en) | 2018-06-13 | 2018-06-13 | Switched reluctance motor with water injection type winding and multidirectional self-circulation ventilation system |
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| US11056952B2 (en) * | 2019-02-28 | 2021-07-06 | Schaeffler Technologies AG & Co. KG | Electric machine with internal cooling passageways |
| CN109802524A (en) * | 2019-03-21 | 2019-05-24 | 哈尔滨理工大学 | A kind of Wound brushless double-feeding motor with novel cooling structure |
| JP6934977B1 (en) * | 2020-04-16 | 2021-09-15 | 三菱電機株式会社 | Rotating machine |
| CN112615445B (en) * | 2020-11-25 | 2022-05-13 | 华为数字能源技术有限公司 | Motor, power assembly and equipment |
| CN113346678B (en) * | 2021-06-09 | 2022-06-07 | 哈尔滨理工大学 | Hybrid excitation turbogenerator with multistage axial flow-centrifugal ventilation cooling system |
| JP7468591B1 (en) | 2022-09-29 | 2024-04-16 | 株式会社明電舎 | Cooling structure for rotating electric machine and rotating electric machine |
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| CN104901481B (en) * | 2015-06-09 | 2018-03-16 | 哈尔滨理工大学 | Stator winding vacuum water-cooled non salient pole generator |
| EP3142231A1 (en) * | 2015-09-08 | 2017-03-15 | ABB Technology AG | An electric power generator |
| CN105939070B (en) * | 2016-05-11 | 2018-03-09 | 哈尔滨理工大学 | A kind of air-draft-type stator of steam turbine generator for being beneficial to radiating |
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Effective date of registration: 20240425 Address after: 226000 No.885, Qingdao Road, Nantong High-tech Zone, Nantong, Jiangsu Province Patentee after: Boyuan electromechanical (Nantong) Co.,Ltd. Country or region after: China Address before: 150080 No. 52, Xuefu Road, Nangang District, Heilongjiang, Harbin Patentee before: HARBIN University OF SCIENCE AND TECHNOLOGY Country or region before: China |