CN107846123B - Exhaust turbine driven reluctance machine - Google Patents
Exhaust turbine driven reluctance machine Download PDFInfo
- Publication number
- CN107846123B CN107846123B CN201710989977.4A CN201710989977A CN107846123B CN 107846123 B CN107846123 B CN 107846123B CN 201710989977 A CN201710989977 A CN 201710989977A CN 107846123 B CN107846123 B CN 107846123B
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- Prior art keywords
- armature
- core
- rotor core
- exhaust gas
- fan
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K16/00—Machines with more than one rotor or stator
- H02K16/04—Machines with one rotor and two stators
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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
- H02K1/146—Stator cores with salient poles consisting of a generally annular yoke with salient poles
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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
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/18—Structural association of electric generators with mechanical driving motors, e.g. with turbines
- H02K7/1807—Rotary generators
- H02K7/1823—Rotary generators structurally associated with turbines or similar engines
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K2213/00—Specific aspects, not otherwise provided for and not covered by codes H02K2201/00 - H02K2211/00
- H02K2213/03—Machines characterised by numerical values, ranges, mathematical expressions or similar information
Abstract
exhaust gas turbine driven reluctance machine belongs to the vehicle engineering field, including axle, first armature core, rotor core, first armature coil, second armature core, second armature coil etc. its characterized in that: the first armature core and the second armature core are symmetrically positioned at two axial sides of the rotor core and fixed on the motor shell; 4k fan-shaped through holes are uniformly distributed on the circumference of the rotor core, wherein k is a positive integer larger than 1; the first armature core and the second armature core are respectively provided with 5k armature poles protruding in a fan shape on one side facing the rotor core, and concentrated armature coils are wound on the armature poles. The technical rotor core has small rotational inertia and quick response; the stator and rotor have a small number of poles and can rotate at high speed, and therefore, the stator and rotor are very suitable for an electric motor driven by an exhaust gas turbine.
Description
Technical Field
The invention relates to a reluctance motor driven by an exhaust gas turbine, belonging to the field of vehicle engineering.
background
at present, 25% -40% of total combustion energy of fuel in a cylinder of an automobile engine is converted into effective work, the rest 60% -75% of the total combustion energy is lost, the energy taken away by waste is 25% -35%, and the waste energy recovery has practical significance. Most of automobile generators are belt-driven alternators, and the generating efficiency of the generators is about 50%. Therefore, the total efficiency of the engine driving the generator to generate electricity is only about 17.5%. This is far less than the power generation efficiency of a turbo generator. Therefore, the waste gas discharged by the engine is used for directly driving the generator to generate electricity, the characteristic of high generating efficiency of the turbonator can be effectively utilized, and the fuel utilization rate of the automobile is improved.
Exhaust turbine generators are hot spots of domestic and foreign research, such as the patent number 201410814049.0 granted invention patent: an exhaust gas turbine generator set (turbine is meaning turbo, turbine) proposes a generator set comprising a turbine, a permanent magnet generator and an inverter. The turbine is configured to receive exhaust gas to be driven in rotation by the exhaust gas. The permanent magnet generator is driven by the rotation of the turbine to generate electricity.
The invention patent application with the application number of 200910231550.3 discloses an exhaust gas turbine driven compound excitation generator, which comprises an exhaust gas turbine, a front end cover, a rear end cover, a rotor and a stator, and is characterized in that the rotor comprises a permanent magnet rotor and an electric excitation rotor, the permanent magnet rotor and the electric excitation rotor share the same armature winding, and generated magnetic fields are combined in parallel in a magnetic circuit. The permanent magnet rotor used by the motor in the application cannot adapt to the high-temperature and high-speed running environment of the exhaust gas turbine.
The patent of invention with the application number of 2016102561230 discloses an exhaust gas turbine driven electric excitation generator which comprises a shaft, an exhaust gas turbine shell, two sets of excitation windings, two stator iron cores, two sets of armature windings, a rotor iron core and a motor shell. The technical rotor of the invention is manufactured in an integrated manner, has no excitation winding, and can adapt to the high-temperature and high-speed working environment of the exhaust gas turbine by adopting the electrified coil for excitation. However, with the progress of research, we have found that the rotor inertia moment directly affects the response speed and starting performance of the exhaust gas turbine generator. Therefore, a new motor with small rotational inertia and fast response speed is needed. At present, no other literature indicates the technical motivation for the improvement.
Compared with the motor, the reluctance motor has no winding or permanent magnet on the rotor, the concentrated winding is wound on the tooth pole of the stator, and two opposite windings in the radial direction can be connected in series or in parallel to form one phase. In addition, the speed regulation is very flexible, the voltage can be changed, and the on-off angle can be changed, so that the speed regulation range is very good.
Disclosure of Invention
in order to invent a reluctance motor driven by an exhaust turbine and realize the recovery of the energy of the exhaust gas of an engine, the invention adopts the following technical scheme:
Exhaust gas turbine driven reluctance machine, including axle, exhaust gas turbine shell, first armature core, rotor core, first armature coil, second armature core, second armature coil and motor housing, its characterized in that:
An exhaust gas turbine and a rotor core are fixed on the shaft; the first armature core, the rotor core and the second armature core are all in a disc shape, and the first armature core and the second armature core are symmetrically positioned at two axial sides of the rotor core and fixed on the motor shell;
6k fan-shaped through holes are uniformly distributed on the circumference of the rotor core, wherein k is a positive integer larger than 1; the sides of the first armature core and the second armature core, which face the rotor core, are respectively provided with 5k uniformly distributed armature poles protruding in a fan shape, the armature poles on the first armature core and the second armature core are aligned in the axial direction, concentrated armature coils are wound on the armature poles, and the winding directions of adjacent armature coils in the circumferential direction are opposite; the first armature core, the second armature core and the rotor core are made by wire-cutting a silicon steel sheet wound around an axis.
the exhaust gas turbine-driven reluctance motor as described above, characterized in that: the fan-shaped through hole of the rotor core is filled with non-magnetic light material; the outer side of the fan-shaped through hole is provided with a fixed ring.
The exhaust gas turbine-driven reluctance motor as described above, characterized in that: the fan-shaped outer diameter of the rotor core through hole is larger than the fan-shaped outer diameter of the armature pole end face, and the fan-shaped inner diameter of the rotor core through hole is smaller than the fan-shaped inner diameter of the armature pole end face.
The exhaust gas turbine-driven reluctance motor as described above, characterized in that: the exhaust gas turbine driven reluctance machine operates on the operating principle of a switched reluctance machine.
the invention has the beneficial effects that:
1, the rotor core is only provided with a turntable with a through hole, so that the rotor core is light in weight, small in rotational inertia, quick in response, small in number of stator and rotor poles, and capable of rotating at a high speed;
2, working according to the principle of the switched reluctance motor, and the control technology is mature;
3, all the phase windings are completely isolated, the armature winding is easy to dissipate heat and can be suitable for a high-temperature operation environment, the short-circuit current cannot cause the propagation of faults, and the reliability is improved;
4 the stator rotor magnetic conduction area is big, and under the same saturated magnetic density, the technique magnetic flux of this application is big, and the back electromotive force is high, and motor power is big.
The invention is further illustrated with reference to the following figures and examples.
drawings
fig. 1 is a longitudinal sectional view of a reluctance motor driven by an exhaust turbine. Wherein, 1 axis; 2 an exhaust gas turbine; 3 an exhaust gas turbine shell; 4, a motor shell; 5 a first armature core; 6 a first armature coil; 7 a rotor core; 8 a second armature coil; 9 second armature core.
fig. 2 is a schematic view of a first armature pole. Wherein, 5 the first armature core; 6 first armature coil.
Fig. 3 is a schematic view of a rotor core. Wherein, 1 axis; 7 rotor core.
Fig. 4 is a second armature pole schematic. Wherein 8 the second armature coil; 9 second armature core.
Detailed Description
Fig. 1 is a longitudinal sectional view of a reluctance motor driven by an exhaust turbine. Wherein, 1 axis; 2 an exhaust gas turbine; 3 an exhaust gas turbine shell; 4, a motor shell; 5 a first armature core; 6 a first armature coil; 7 a rotor core; 8 a second armature coil; 9 second armature core.
An exhaust gas turbine driven reluctance machine characterized by:
an exhaust gas turbine and a rotor core are fixed on the shaft; the first armature core, the rotor core and the second armature core are all in a disc shape, and the first armature core and the second armature core are symmetrically positioned at two axial sides of the rotor core and fixed on the motor shell;
6k fan-shaped through holes are uniformly distributed on the circumference of the rotor core, wherein k is a positive integer larger than 1; the sides of the first armature core and the second armature core, which face the rotor core, are respectively provided with 5k uniformly distributed armature poles protruding in a fan shape, the armature poles on the first armature core and the second armature core are aligned in the axial direction, concentrated armature coils are wound on the armature poles, and the winding directions of adjacent armature coils in the circumferential direction are opposite; the first armature core, the second armature core and the rotor core are made by wire-cutting a silicon steel sheet wound around an axis.
The method is characterized in that: the exhaust gas turbine driven reluctance machine operates on the operating principle of a switched reluctance machine.
fig. 2 is a schematic view of a first armature pole. Wherein, 5 the first armature core; 6 first armature coil. The first armature core and the rotor core are disc-shaped, and the first armature core and the second armature core are symmetrically positioned at two axial sides of the rotor core and fixed on the motor shell;
4k fan-shaped through holes are uniformly distributed on the circumference of the rotor core, wherein k is a positive integer larger than 1; one side of the first armature core facing the rotor core is provided with 5k uniformly distributed fan-shaped convex armature poles, the armature poles of the first armature core are aligned in the axial direction, centralized armature coils are wound on the armature poles, and the winding directions of adjacent armature coils in the circumferential direction are opposite;
Fig. 3 is a schematic view of a rotor core. Wherein, 1 axis; 7 rotor core. : the fan-shaped through hole of the rotor core is filled with non-magnetic light material; the outer side of the fan-shaped through hole is provided with a fixed ring. The fan-shaped outer diameter of the rotor core through hole is larger than the fan-shaped outer diameter of the armature pole end face, and the fan-shaped inner diameter of the rotor core through hole is smaller than the fan-shaped inner diameter of the armature pole end face.
Fig. 4 is a second armature pole schematic. Wherein 8 the second armature coil; 9 second armature core. The second armature core is disc-shaped, and the first armature core and the second armature core are symmetrically positioned at two axial sides of the rotor core and fixed on the motor shell; 4k fan-shaped through holes are uniformly distributed on the circumference of the rotor core, wherein k is a positive integer larger than 1; one side of the second armature core facing the rotor core is provided with 5k uniformly distributed armature poles protruding in a fan shape, the armature poles on the second armature core are aligned in the axial direction, concentrated armature coils are wound on the armature poles, and the winding directions of adjacent armature coils in the circumferential direction are opposite.
The working principle is as follows: because the first armature core and the second armature core of the invention are aligned in the axial direction, when the part of the rotor core which can conduct magnetism is aligned with the armature pole, the reluctance of the armature pole coil linkage is minimum, and the armature winding coil linkage is maximum; when the fan-shaped through holes of the rotor core are aligned with the armature poles, the reluctance of the armature pole coil linkage is the largest, and the armature winding flux linkage is the smallest.
when the part of the rotor core, which can conduct magnetism, is gradually close to the armature poles, the self-inductance of the first armature winding and the second armature winding is increased; when the magnetic conductive part of the rotor iron core is separated from the armature pole, the self-inductance of the first armature winding and the second armature winding on the armature pole is reduced.
Because the flux linkage of the armature winding coil linkage of the motor after the armature winding is electrified also continuously changes along with the position change of the rotor, if the armature winding is electrified when the rotor pole is close to the stator pole where the armature winding of a certain phase is positioned, the armature winding can generate a strong magnetic field to prevent the next phase of the rotor from separating from the stator pole where the armature winding of the phase is positioned, and the phase armature winding induces electromotive force at the moment. This is the principle of the present application for the starter-generator to operate as a generator.
When the starting generator operates as a motor, a phase winding with rising self-inductance is electrified with forward current, and the winding can generate positive torque; a phase winding with a reduced self-inductance is supplied with a positive current, and the winding can generate a negative torque.
It should be understood that equivalents and modifications of the technical solution and inventive concept thereof may occur to those skilled in the art, and all such modifications and alterations should fall within the scope of the appended claims.
Claims (4)
1. Exhaust gas turbine driven reluctance machine, including axle, exhaust gas turbine shell, first armature core, rotor core, first armature coil, second armature core, second armature coil and motor housing, its characterized in that:
an exhaust gas turbine and a rotor core are fixed on the shaft;
the first armature core, the rotor core and the second armature core are all in a disc shape, and the first armature core and the second armature core are symmetrically positioned at two axial sides of the rotor core and fixed on the motor shell;
6k fan-shaped through holes are uniformly distributed on the circumference of the rotor core, wherein k is a positive integer larger than 1;
The sides of the first armature core and the second armature core, which face the rotor core, are respectively provided with 5k uniformly distributed armature poles protruding in a fan shape, the armature poles on the first armature core and the second armature core are aligned in the axial direction, concentrated armature coils are wound on the armature poles, and the winding directions of adjacent armature coils in the circumferential direction are opposite;
The first armature core and the second armature core are made by wire-cutting a silicon steel sheet wound around an axis.
2. The exhaust gas turbine driven reluctance machine of claim 1, wherein:
The fan-shaped through hole of the rotor core is filled with non-magnetic light material; the outer side of the fan-shaped through hole is provided with a fixed ring.
3. The exhaust gas turbine driven reluctance machine of claim 1, wherein:
The fan-shaped outer diameter of the rotor core through hole is larger than the fan-shaped outer diameter of the armature pole end face, and the fan-shaped inner diameter of the rotor core through hole is smaller than the fan-shaped inner diameter of the armature pole end face.
4. The exhaust gas turbine driven reluctance machine of claim 1, wherein:
The exhaust gas turbine driven reluctance machine operates on the operating principle of a switched reluctance machine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710989977.4A CN107846123B (en) | 2017-10-23 | 2017-10-23 | Exhaust turbine driven reluctance machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710989977.4A CN107846123B (en) | 2017-10-23 | 2017-10-23 | Exhaust turbine driven reluctance machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107846123A CN107846123A (en) | 2018-03-27 |
| CN107846123B true CN107846123B (en) | 2019-12-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710989977.4A Active CN107846123B (en) | 2017-10-23 | 2017-10-23 | Exhaust turbine driven reluctance machine |
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| Country | Link |
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| CN (1) | CN107846123B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202142938U (en) * | 2011-08-05 | 2012-02-08 | 国电联合动力技术有限公司 | Large-scale direct driving dial switch magnetic resistance wind driven generator and system thereof |
| CN102545412A (en) * | 2011-12-19 | 2012-07-04 | 上海电机学院 | High-efficiency and large-torque disk type switching magnetoresistive motor |
| CN105896820A (en) * | 2016-04-25 | 2016-08-24 | 山东理工大学 | Exhaust gas turbine driven electric excitation generator |
| CN106787547A (en) * | 2017-02-28 | 2017-05-31 | 南京工业大学 | A kind of axial magnetic flux two-phase doubly salient permanent magnet motor |
-
2017
- 2017-10-23 CN CN201710989977.4A patent/CN107846123B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202142938U (en) * | 2011-08-05 | 2012-02-08 | 国电联合动力技术有限公司 | Large-scale direct driving dial switch magnetic resistance wind driven generator and system thereof |
| CN102545412A (en) * | 2011-12-19 | 2012-07-04 | 上海电机学院 | High-efficiency and large-torque disk type switching magnetoresistive motor |
| CN105896820A (en) * | 2016-04-25 | 2016-08-24 | 山东理工大学 | Exhaust gas turbine driven electric excitation generator |
| CN106787547A (en) * | 2017-02-28 | 2017-05-31 | 南京工业大学 | A kind of axial magnetic flux two-phase doubly salient permanent magnet motor |
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| Publication number | Publication date |
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| CN107846123A (en) | 2018-03-27 |
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Effective date of registration: 20181224 Address after: 266000 Wang Siwenzhuan, Department of Logistics, Shandong Vocational College of Foreign Trade, 201 Jufeng Road, Licang District, Qingdao City, Shandong Province Applicant after: Shi Zhengqi Address before: 255090 Karen garden, Ma Shang Town, Zhangdian District, Zibo City, Zibo, Shandong 34, 419 Applicant before: Shi Liwei |
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Effective date of registration: 20191112 Address after: 210000 Room 102, building B, building 3, Baixia high tech Industrial Park, No. 8 Yongfeng Avenue, Qinhuai District, Nanjing City, Jiangsu Province Applicant after: Nanjing Qinhuai Ziyun Chuangyi Enterprise Service Co., Ltd Address before: 266000 Wang Siwenzhuan, Department of Logistics, Shandong Vocational College of Foreign Trade, 201 Jufeng Road, Licang District, Qingdao City, Shandong Province Applicant before: Shi Zhengqi |
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