CN112994279B - Switched reluctance motor - Google Patents

Switched reluctance motor Download PDF

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Publication number
CN112994279B
CN112994279B CN202110191747.XA CN202110191747A CN112994279B CN 112994279 B CN112994279 B CN 112994279B CN 202110191747 A CN202110191747 A CN 202110191747A CN 112994279 B CN112994279 B CN 112994279B
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China
Prior art keywords
stator
rotor
spring
shell
teeth
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CN202110191747.XA
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Chinese (zh)
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CN112994279A (en
Inventor
刘宽
赵翰文
方立
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Hangzhou Xingcheng Electric Technology Co ltd
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Hangzhou Xingcheng Electric Technology Co ltd
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Priority to CN202110191747.XA priority Critical patent/CN112994279B/en
Publication of CN112994279A publication Critical patent/CN112994279A/en
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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
    • H02K1/14—Stator cores with salient poles
    • 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
    • H02K1/24—Rotor cores with salient poles ; Variable reluctance rotors
    • H02K1/246—Variable reluctance rotors
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K11/00—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
    • H02K11/20—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection for measuring, monitoring, testing, protecting or switching
    • H02K11/25—Devices for sensing temperature, or actuated thereby
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K9/00—Arrangements for cooling or ventilating
    • H02K9/02—Arrangements for cooling or ventilating by ambient air flowing through the machine
    • H02K9/04—Arrangements for cooling or ventilating by ambient air flowing through the machine having means for generating a flow of cooling medium
    • H02K9/06—Arrangements for cooling or ventilating by ambient air flowing through the machine having means for generating a flow of cooling medium with fans or impellers driven by the machine shaft
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K9/00—Arrangements for cooling or ventilating
    • H02K9/19—Arrangements for cooling or ventilating for machines with closed casing and closed-circuit cooling using a liquid cooling medium, e.g. oil
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K9/00—Arrangements for cooling or ventilating
    • H02K9/26—Structural association of machines with devices for cleaning or drying cooling medium, e.g. with filters

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Synchronous Machinery (AREA)
  • Motor Or Generator Cooling System (AREA)

Abstract

The invention discloses a switched reluctance motor, which comprises a shell, a stator, a rotor and a rotating shaft, wherein the shell is provided with a first through hole and a second through hole, the outer circumference of the stator is connected with the shell, the inner circumference of the stator is uniformly provided with a plurality of stator teeth along the circumference, winding coils are wound on the stator teeth, the rotor is arranged in the stator, a certain gap is arranged between the stator and the rotor, the rotor is provided with a shaft hole, one end of the rotating shaft is arranged in the shaft hole, the other end of the rotating shaft penetrates out of the shell, the rotor is uniformly provided with rotor teeth corresponding to the stator teeth along the circumference, and the stator teeth and the rotor teeth are provided with certain inclination angles when being arranged on the stator and the rotor teeth; according to the invention, by designing the rotor tooth pole and the stator tooth pole with the inclination angles, wind for taking away heat is generated when the rotor rotates, and fan blades are omitted, so that the cost of the motor can be reduced, the volume of the motor is reduced, the power density of a system is improved, and the high-power wind generator has a very high economic value.

Description

Switched reluctance motor
Technical Field
The invention relates to the technical field of reluctance motors, in particular to a stator and a rotor of a switched reluctance motor.
Background
When the reluctance motor runs, the stator and the rotor inside the reluctance motor have loss caused by magnetic field change, and a coil inside the stator has loss caused by current flowing; these losses can cause the coils, stator, and rotor to heat up; traditional motor must increase the heat dissipation fan blade in inside, and the motor drives the fan blade rotation when rotating and produces the air current in the motor is inside, and these air currents can be for coil, stator and rotor heat dissipation, and increase the heat dissipation fan blade and need increase the cost, make the motor volume increase.
For example, chinese patent application No. CN201710658489.5, filed 2017, 08 and 03, discloses a switched reluctance motor with water cooling, which comprises a dust cover, a fan, a motor housing, a stator, a water cooling bin, a rotor, a rotating shaft, a base and a heat exchange bin, the motor shell is fixedly arranged on the base, the front end cover is fixedly arranged at the front end of the motor shell, the rear end cover is fixedly arranged at the rear end of the motor shell, the dust cover is fixedly arranged at the front end of the motor shell, the rotating shaft is rotatably arranged in the inner cavity of the motor shell through a bearing, the fan is fixedly installed in the rotating shaft through a connecting piece and located between the dust cover and the cavity of the front end cover, the water cooling bin is fixedly installed on the inner wall of the motor shell, the stator with the excitation wire ring is fixedly installed on the inner wall of the water cooling bin, the rotor is fixedly installed in the middle of the rotating shaft, and the heat exchange bin and the water pump are fixedly installed at the bottom of the base. This application needs to adopt the fan heat dissipation, makes the motor volume increase, has increased the motor cost simultaneously.
Disclosure of Invention
The invention mainly solves the problem of high cost required by the heat dissipation of the motor in the prior art; the utility model provides a stator and rotor of switched reluctance motor need not increase the fan blade, through improving stator and rotor structure, plays the effect of fan blade when making its pivoted, carries out synchronous heat dissipation, reduces the motor volume, reduces motor manufacturing cost.
The technical problem of the invention is mainly solved by the following technical scheme: the utility model provides a switched reluctance motor's stator and rotor, includes casing, stator, rotor and pivot, it has first through-hole and second through-hole to open on the casing, the outer circumference and the casing of stator are connected, the interior circumference of stator evenly is provided with a plurality of stator tooth pole along the circumference, the winding coil has on the stator tooth pole, the rotor sets up inside the stator, be provided with certain clearance between stator and the rotor, the rotor is opened there is the shaft hole, the one end setting of pivot is in the shaft hole, the other end of pivot is worn out outside the casing, the rotor evenly be provided with along the circumference with the rotor tooth pole that the stator tooth pole corresponds, stator tooth pole setting all has certain inclination when on the stator and rotor tooth pole setting on the rotor. The rotor tooth pole is designed to be inclined along the rotor, when viewed from top to bottom, the top, middle and bottom ends of the stator tooth pole and the rotor tooth pole can have some parts which are not overlapped, the stator tooth pole and the rotor tooth pole are synchronously deviated, when the rotor in the motor rotates, the effect similar to a fan blade can be generated, air is pressed from one end of the motor to the other end to flow, the air flowing direction depends on the deviation direction of the teeth and the rotating direction of the motor, when the stator tooth pole and the rotor tooth pole are arranged in a mode of a heat dissipation plate, the rotor can generate certain wind for a moment when rotating, when the rotor rotates due to synchronous rotation, the wind and the rotor simultaneously generate wind, the generated wind and the rotor do circular motion, and the heat cannot be taken out of the motor shell, and after the rotor tooth pole is designed to be inclined, the rotor has a certain sequence of wind generation in the rotating process, the wind that produces is similar to the effect of tornado, and certain direction that wind can follow removes, and the heat that produces stator, rotor and winding coil that can be convenient takes out the motor casing outside, need not increase the fan leaf, can carry out the heat dissipation in step, reduces the motor volume, reduces motor manufacturing cost.
Preferably, the stator tooth pole and the rotor tooth pole are formed by laminating silicon steel sheets, and each silicon steel sheet is laminated at a certain angle, so that the stator tooth pole and the rotor tooth pole are in a linear inclined design or a spiral design. Through carrying out the design of pressing the folding of a slice with the silicon steel sheet with certain for rotor tooth utmost point and stator tooth utmost point form straight line slope design or heliciform design, can produce the wind that drives the heat when making the rotor rotate.
Preferably, the first through hole is an air inlet, the second through hole is an air outlet, the air inlet is provided with a filter screen, the air outlet is provided with a cover body, one side of the cover body, which is in contact with the shell, is provided with a first spring and a second spring, the first end of the first spring is fixedly connected with the cover body, the second end of the first spring is fixedly connected with the shell, the first end of the second spring is fixedly connected with the cover body, and the second end of the second spring is fixedly connected with the shell. When the rotor rotates, the gas pressure in the casing produces the change, wind gets into from the air intake, set up the filter screen, prevent that debris from carrying out in the casing, damage the motor, simultaneously, wind goes out from the air outlet, when wind reachs the air outlet position, wind produces the elasticity that thrust overcomes first spring and second spring, open the lid, no longer rotatory as the rotor, when not producing wind, first spring and second spring shrink for the lid carries out the sealed cover with the air outlet, prevent that the debris dust from getting into inside the motor casing.
Preferably, one side of the casing body opposite to the cover body is provided with a first accommodating groove and a second accommodating groove, the second end of the first spring is connected with the groove bottom of the first accommodating groove, the second end of the second spring is connected with the groove bottom of the second accommodating groove, the first spring is equal to the first accommodating groove in length when being in a natural state, and the second spring is equal to the second accommodating groove in length when being in a natural state. Through setting up the holding tank for the leakproofness between lid and casing is better.
Preferably, the rotating shaft is made of a high-temperature-resistant material, and the surface of the rotating shaft is also coated with high-temperature-resistant insulating paint. And the high-temperature resistant material is adopted, so that the service life of the motor is effectively prolonged.
Preferably, the motor further comprises a sound absorbing mechanism provided on the housing, the rotor, or the stator. The sound absorption mechanism is arranged, so that the noise generated by the motor is reduced, and the environmental noise pollution is reduced.
The invention has the beneficial effects that: according to the invention, by designing the rotor tooth pole and the stator tooth pole with the inclination angles, wind for taking away heat is generated when the rotor rotates, and fan blades are omitted, so that the cost of the motor can be reduced, the volume of the motor is reduced, the power density of a system is improved, and the high-power wind generator has a very high economic value.
Drawings
Fig. 1 is a schematic structural diagram of a reluctance motor according to a first embodiment of the present invention.
Fig. 2 is a schematic structural view of a rotor tooth pole according to a first embodiment of the present invention.
In the figure, 1 is a shell, 2 is a stator, 3 is a rotor, 4 is a rotating shaft, 5 is a stator tooth pole, 6 is a rotor tooth pole.
Detailed Description
The technical scheme of the invention is further specifically described by the following embodiments and the accompanying drawings.
The first embodiment is as follows: a stator and a rotor of a switched reluctance motor are disclosed, as shown in figure 1, comprising a shell 1, a stator 2, a rotor 3 and a rotating shaft 4, wherein the shell is provided with a first through hole and a second through hole, the outer circumference of the stator is connected with the shell, the inner circumference of the stator is uniformly provided with a plurality of stator teeth poles 5 along the circumference, winding coils are wound on the stator teeth poles, the rotor is arranged inside the stator, a certain gap is arranged between the stator and the rotor, the rotor is provided with a shaft hole, one end of the rotating shaft is arranged in the shaft hole, the other end of the rotating shaft penetrates out of the shell, the rotor is uniformly provided with rotor teeth poles 6 corresponding to the stator teeth poles along the circumference, the stator teeth poles and the rotor teeth poles are provided with a certain inclination angle when the stator teeth poles are arranged on the stator and the rotor, the rotating shaft is made of high temperature resistant material, the surface of the rotating shaft is also coated with high temperature resistant insulating varnish, the stator teeth poles and the rotor teeth poles are all formed by laminating silicon steel sheets, each silicon steel sheet is pressed and stacked at a certain angle to enable the stator tooth pole and the rotor tooth pole to be designed in a spiral mode, in the figure 1, the stator tooth pole and the rotor tooth pole are designed in a spiral mode, when the stator tooth pole and the rotor tooth pole are seen from top to bottom in projection, the parts, which are not overlapped, of the top ends, the middle parts and the bottom ends of the stator tooth pole and the rotor tooth pole are small, therefore, no special mark is arranged in the figure, the first through hole is an air inlet, and the second through hole is an air outlet.
The stator tooth pole and the rotor tooth pole are both formed by laminating silicon steel sheets, and each silicon steel sheet is laminated at a certain angle to enable the stator tooth pole and the rotor tooth pole to be in a linear inclined design. When the stator tooth pole and the rotor tooth pole are designed to be in a straight line inclined mode, when viewed from top to bottom in projection, the parts, where the top ends, the middle parts and the bottom ends of the stator tooth pole and the rotor tooth pole are not overlapped, of the stator tooth pole and the rotor tooth pole are large, and the stator tooth pole and the rotor tooth pole extend obliquely downwards or obliquely upwards.
The second embodiment is a stator and a rotor of a switched reluctance motor, and the difference between the first embodiment and the second embodiment is that a filter screen is arranged at an air inlet of the second embodiment, a cover body is arranged at an air outlet, a first spring and a second spring are arranged on one side of the cover body, which is in contact with a shell, a first end of the first spring is fixedly connected with the cover body, a second end of the first spring is fixedly connected with the shell, a first end of the second spring is fixedly connected with the cover body, a second end of the second spring is fixedly connected with the shell, a first accommodating groove and a second accommodating groove are arranged on one side of the shell, which is opposite to the cover body, a second end of the first spring is connected with the groove bottom of the first accommodating groove, a second end of the second spring is connected with the groove bottom of the second accommodating groove, the first spring is equal to the length of the first accommodating groove when in a natural state, and the second spring is equal to the length of the second accommodating groove when in a natural state; the rest of the structure is the same as the first embodiment.
The third embodiment is a stator and a rotor of a switched reluctance motor, and the difference between the first embodiment and the second embodiment is that the first through hole of the first embodiment is a liquid inlet, the second through hole is a liquid outlet, a water cooling device, a temperature compensation device and a water pipe are additionally arranged in the first embodiment, the water cooling device is connected with the water pipe, the water pipe penetrates through the liquid inlet to be inserted into a gap between teeth of the stator and returns to the water cooling device through the liquid outlet, the temperature compensation device is arranged on the water pipe and is positioned between the water cooling device and the liquid inlet, the temperature compensation device comprises a controller, a temperature sensor, a water storage tank, a semiconductor refrigeration sheet, a third spring, a fourth spring, a guide pipe, a first electromagnetic valve, a second electromagnetic valve, a power supply battery, a first switch and a second switch, the temperature sensor is arranged in the water pipe and is used for collecting temperature information in the water pipe, the temperature sensor is connected with the controller, the water storage tank is arranged on the water pipe, the water storage tank is internally provided with an isolation block and a locking block, the inner cavity of the tank body is isolated into an upper cavity and a lower cavity through the isolation block, the semiconductor refrigeration piece is arranged in the lower cavity and is connected with a power supply battery, the upper end of the isolation block is connected with one end of a third spring, the other end of the third spring is connected with the upper end of the water storage tank, the lower end of the isolation block is connected with one end of a fourth spring, the other end of the fourth spring is connected with the lower end of the water storage tank, the locking block is used for fixing the isolation block, when the water storage tank is in a working state, the isolation block is not locked by the locking block, the third spring is connected with the power supply battery through a first switch, the fourth spring is connected with the power supply battery through a second switch, the first switch and the second switch are electronic switches, the control ends of the first switch and the second switch are both connected with a controller, and the junction of the water storage tank and a water pipe is provided with a first connecting hole, the first electromagnetic valve is arranged at the first connecting hole, the upper cavity of the water storage tank is provided with a second connecting hole, the second electromagnetic valve is arranged at the second connecting hole, the control ends of the first electromagnetic valve and the second electromagnetic valve are both connected with the controller, one end of the guide pipe is connected with the second connecting hole, the other end of the guide pipe is in conduction connection with the water pipe, and the second electromagnetic valve can also be arranged at the conduction connection position of the guide pipe and the water pipe; the rest of the structure is the same as the first embodiment. The temperature compensation device is used for carrying out certain temperature compensation control on the cold water conveyed by the water cooling device, so that the temperature of the cold water entering the motor shell is prevented from being too low or too high, the influence of the cold water on the stator and the rotor is prevented, and the temperature of the cold water is controlled within a certain range; the working principle is as follows: the lower cavity of the water storage tank stores cold water, the upper cavity stores hot water, the cold water is made through the semiconductor refrigerating sheet, the hot water is firstly fixed through the isolating block by the locking block, the third spring is electrified, the third spring is used as a coil to heat, and the water in the upper cavity is heated. The water pipe is compensated by the guide pipe, the locking block is pulled out, the isolation block is not fixed, the third spring or the fourth spring is electrified to contract, and the water in the upper cavity or the lower cavity is squeezed out.
Fourth embodiment, a stator and a rotor of a switched reluctance motor, the present embodiment is different from the first embodiment in that a sound absorbing mechanism is added, and the sound absorbing mechanism is disposed on a housing, the rotor or the stator; the rest of the structure is the same as the first embodiment. The sound absorption mechanism is arranged, so that the noise generated by the motor is reduced, and the environmental noise pollution is reduced.
In a specific application, when a rotor in the motor rotates, the switched reluctance motor designed by the invention can generate an effect similar to a fan blade, air is pressed to flow from one end of the motor to the other end, the air flow direction depends on the offset direction of teeth and the rotation direction of the motor, when a stator tooth pole and a rotor tooth pole are arranged in a heat dissipation plate mode, the rotor rotates, although a certain amount of wind is generated, when the rotor rotates due to synchronous rotation and wind generation, the generated wind and the rotor do circular motion together and cannot take heat out of a motor shell, after the rotor tooth pole is obliquely designed, the wind generation has a certain sequence in the rotating process, the generated wind has an effect similar to tornado, the wind can move along a certain direction, and the heat generated by a winding coil of the stator, the rotor and the winding coil of the motor shell can be conveniently taken out of the motor shell, the fan blades are not required to be added, synchronous heat dissipation can be carried out, the size of the motor is reduced, and the production cost of the motor is reduced.
The above-described embodiments are only preferred embodiments of the present invention, and are not intended to limit the present invention in any way, and other variations and modifications may be made without departing from the spirit of the invention as set forth in the claims.

Claims (4)

1. A switched reluctance machine, comprising:
the stator comprises a shell, a stator, a rotor and a rotating shaft, wherein a first through hole and a second through hole are formed in the shell, the outer circumference of the stator is connected with the shell, a plurality of stator teeth are uniformly arranged on the inner circumference of the stator along the circumference, winding coils are wound on the stator teeth, the rotor is arranged in the stator, a certain gap is formed between the stator and the rotor, a shaft hole is formed in the rotor, one end of the rotating shaft is arranged in the shaft hole, the other end of the rotating shaft penetrates out of the shell, rotor teeth corresponding to the stator teeth are uniformly arranged on the rotor along the circumference, and the stator teeth and the rotor teeth are provided with certain inclination angles when arranged on the stator;
the first through hole is an air inlet, the second through hole is an air outlet, the air inlet is provided with a filter screen, the air outlet is provided with a cover body, one side of the cover body, which is in contact with the shell, is provided with a first spring and a second spring, the first end of the first spring is fixedly connected with the cover body, the second end of the first spring is fixedly connected with the shell, the first end of the second spring is fixedly connected with the cover body, and the second end of the second spring is fixedly connected with the shell;
one side of the relative lid of casing is provided with first holding tank and second holding tank, the second end of first spring is connected with the tank bottom of first holding tank, the second end of second spring is connected with the tank bottom of second holding tank, first spring equals with first holding tank length when being in the natural state, the second spring equals with second holding tank length when being in the natural state.
2. The switched reluctance machine of claim 1,
the stator tooth pole and the rotor tooth pole are both formed by laminating silicon steel sheets, and each silicon steel sheet is laminated at a certain angle to enable the stator tooth pole and the rotor tooth pole to be in a linear inclined design or a spiral design.
3. The switched reluctance machine of claim 1,
the rotating shaft is made of high-temperature-resistant materials, and the surface of the rotating shaft is also coated with high-temperature-resistant insulating paint.
4. The switched reluctance machine of claim 1,
the sound absorbing mechanism is arranged on the shell, the rotor or the stator.
CN202110191747.XA 2021-02-19 2021-02-19 Switched reluctance motor Active CN112994279B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202110191747.XA CN112994279B (en) 2021-02-19 2021-02-19 Switched reluctance motor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202110191747.XA CN112994279B (en) 2021-02-19 2021-02-19 Switched reluctance motor

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CN112994279A CN112994279A (en) 2021-06-18
CN112994279B true CN112994279B (en) 2022-02-11

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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101442246A (en) * 2008-12-23 2009-05-27 南京航空航天大学 Self-wind cooled rotor magneto resistance genus motor
CN103516163A (en) * 2012-06-19 2014-01-15 扬州博世特工具有限公司 A switch magnetic reluctance motor
CN204349616U (en) * 2015-01-09 2015-05-20 长安大学 A kind of switch reluctance machine rotor
CN104868676A (en) * 2015-05-21 2015-08-26 浙江大学 Switch reluctance motor structure capable of reducing vibration noise
CN105846562A (en) * 2016-05-12 2016-08-10 哈尔滨理工大学 Novel switch magnetic reluctance motor
CN109067024A (en) * 2018-07-24 2018-12-21 江苏大学 A kind of big torque micro-vibration magnetic suspension switched reluctance motor
CN209057088U (en) * 2018-12-24 2019-07-02 哈尔滨理工大学 A kind of switched reluctance machines structure of sound insulation heat dissipation

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2017147778A (en) * 2016-02-15 2017-08-24 マツダ株式会社 Switched reluctance motor
JP2017204906A (en) * 2016-05-09 2017-11-16 本田技研工業株式会社 Switched reluctance motor

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101442246A (en) * 2008-12-23 2009-05-27 南京航空航天大学 Self-wind cooled rotor magneto resistance genus motor
CN103516163A (en) * 2012-06-19 2014-01-15 扬州博世特工具有限公司 A switch magnetic reluctance motor
CN204349616U (en) * 2015-01-09 2015-05-20 长安大学 A kind of switch reluctance machine rotor
CN104868676A (en) * 2015-05-21 2015-08-26 浙江大学 Switch reluctance motor structure capable of reducing vibration noise
CN105846562A (en) * 2016-05-12 2016-08-10 哈尔滨理工大学 Novel switch magnetic reluctance motor
CN109067024A (en) * 2018-07-24 2018-12-21 江苏大学 A kind of big torque micro-vibration magnetic suspension switched reluctance motor
CN209057088U (en) * 2018-12-24 2019-07-02 哈尔滨理工大学 A kind of switched reluctance machines structure of sound insulation heat dissipation

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