CN111049295B - Motor rotor and switched reluctance motor - Google Patents
Motor rotor and switched reluctance motor Download PDFInfo
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- CN111049295B CN111049295B CN201911295404.7A CN201911295404A CN111049295B CN 111049295 B CN111049295 B CN 111049295B CN 201911295404 A CN201911295404 A CN 201911295404A CN 111049295 B CN111049295 B CN 111049295B
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- 230000008859 change Effects 0.000 description 6
- 238000004804 winding Methods 0.000 description 6
- 230000004907 flux Effects 0.000 description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000002596 correlated effect Effects 0.000 description 1
- 230000000875 corresponding effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000000696 magnetic material Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000000644 propagated effect Effects 0.000 description 1
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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
- H02K1/24—Rotor cores with salient poles ; Variable reluctance rotors
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K19/00—Synchronous motors or generators
- H02K19/02—Synchronous motors
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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
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- Engineering & Computer Science (AREA)
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- Iron Core Of Rotating Electric Machines (AREA)
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Abstract
The application provides a motor rotor and a switched reluctance motor. This electric motor rotor includes rotor core (1), rotor core (1) includes rotor yoke (2) and rotor tooth, the rotor tooth sets up the periphery at rotor yoke (2), a plurality of rotor teeth are arranged along the circumference interval of rotor yoke (2), the rotor tooth is along radially extending, in the cross-section of the central axis of perpendicular to rotor core (1), along the radial by outer direction of rotor core (1), the rotor tooth includes first tooth section (3), second tooth section (4) and third tooth section (5), wherein the circumference width of first tooth section (3) and third tooth section (5) all is less than the circumference width of second tooth section (4). According to the motor rotor, the magnetic path of the magnetic force lines of the rotor tooth part can be optimized, and the torque fluctuation of the motor is obviously reduced.
Description
Technical Field
The application relates to the technical field of motor equipment, in particular to a motor rotor and a switched reluctance motor.
Background
The switched reluctance motor has good applicability in the industrial field with complex environment due to the advantages of simple structure, reliable work and almost no need of maintenance.
The torque of the switched reluctance motor is generated by the principle of minimum reluctance, and is excited by an armature winding, and stator teeth and rotor teeth form a magnetic circuit mainly in the radial direction. In the prior art, torque fluctuation of the switched reluctance motor is optimized, and the mode of arranging auxiliary grooves or trimming edges on stator teeth or rotor teeth is mainly adopted for optimization, so that the mode is very effective for a permanent magnet motor, the cogging torque of the motor can be weakened, but the switched reluctance motor is not provided with permanent magnets, so that the cogging torque is not generated, and the torque fluctuation of the switched reluctance motor is difficult to reduce by the prior art.
Disclosure of Invention
Therefore, the technical problem to be solved by the present application is to provide a motor rotor and a switched reluctance motor, which can optimize a magnetic flux path of a rotor tooth portion, and significantly reduce torque ripple of the motor.
In order to solve the above problem, the present application provides an electric motor rotor, including rotor core, rotor core includes rotor yoke and rotor tooth, the rotor tooth sets up the periphery at rotor yoke, a plurality of rotor teeth are arranged along rotor yoke's circumference interval, the rotor tooth is along radially extending, in the cross-section of the central axis of perpendicular to rotor core, along rotor core's radial by outer direction in, the rotor tooth includes first tooth section, second tooth section and third tooth section, wherein the circumference width of first tooth section and third tooth section all is less than the circumference width of second tooth section.
Preferably, the rotor teeth further include a fourth tooth segment located between the third tooth segment and the rotor yoke, and a circumferential width of the fourth tooth segment is greater than a circumferential width of the third tooth segment.
Preferably, the axially extending edges of the second tooth segment are each provided with a circular arc transition.
Preferably, the radius of the circular arc is R, and the radial thickness of the second tooth section is tr2, wherein R/tr2 is 0.25 ≦ R/tr2 ≦ 0.35.
Preferably, a step structure is formed between the first tooth section and the second tooth section, and a step structure is formed between the second tooth section and the third tooth section.
Preferably, the maximum width of the third tooth section is wr3, the maximum width of the second tooth section is wr2, wherein 0.25 ≦ wr3/wr2 ≦ 0.35.
Preferably, the radial thickness of the first tooth segment is tr1 and the radial thickness of the second tooth segment is tr2, wherein 3. ltoreq. tr2/tr 1. ltoreq.4.
Preferably, the radial thickness of the second tooth segment is tr2, and the radial thickness of the third tooth segment is tr3, wherein 0.25. ltoreq. tr3/tr 2. ltoreq.0.35.
According to another aspect of the present application, there is provided a switched reluctance motor including a motor rotor and a motor stator, the motor rotor being the motor rotor described above.
Preferably, in a cross section perpendicular to the central axis of the rotor core, the maximum width of the first tooth segment of the rotor tooth is wr1, and the stator of the motor includes stator teeth, the width of the inner side of the stator teeth close to the rotor tooth is ws, wherein 0.3 ≦ wr1/ws ≦ 0.33.
Preferably, in a cross section perpendicular to the central axis of the rotor core, the maximum width of the second tooth segment of the rotor tooth is wr2, and the stator of the motor comprises stator teeth, the width of the inner side of the stator teeth close to the rotor tooth is ws, wherein 1 ≦ wr2/ws ≦ 1.1.
The application provides an electric motor rotor, including rotor core, rotor core includes rotor yoke and rotor tooth, the rotor tooth sets up the periphery at rotor yoke, a plurality of rotor teeth are arranged along rotor yoke's circumference interval, the rotor tooth is along radially extending, in the cross-section of the central axis of perpendicular to rotor core, along rotor core's radial by outer and interior direction, the rotor tooth includes first tooth section, second tooth section and third tooth section, wherein the circumference width of first tooth section and third tooth section all is less than the circumference width of second tooth section. The motor rotor is arranged to be of a segmented structure, the rotor teeth form a structure with a wide middle and narrow ends from outside to inside along the radial direction, so that the side edges of the rotor teeth have larger contact area, a part of magnetic force lines enter the rotor from the side face of the tooth part instead of the opposite face of the tooth part, the electromagnetic torque can be kept not to be reduced, when the rotor teeth enter or leave the stator tooth area, the air gap flux density change is not so violent, the tooth space effect is weakened, and the torque fluctuation of the motor can be remarkably reduced.
Drawings
Fig. 1 is a schematic structural diagram of a motor according to an embodiment of the present application;
FIG. 2 is a schematic view of a dimensional structure of a rotor of an electric machine according to an embodiment of the present application;
fig. 3 is a schematic diagram of magnetic force line distribution of a motor according to an embodiment of the present application;
FIG. 4 is a graph of the effect of wr1/ws on torque for a motor of an embodiment of the present application;
FIG. 5 is a graph of the effect of wr2/ws on torque for a motor of an embodiment of the present application;
fig. 6 is a graph comparing torque curves of the motor of the embodiment of the present application and a prior art motor.
The reference numerals are represented as:
1. a rotor core; 2. a rotor yoke; 3. a first tooth segment; 4. a second tooth segment; 5. a third tooth segment; 6. a fourth tooth segment; 7. a motor stator; 8. and stator teeth.
Detailed Description
Referring to fig. 1 to 6 in combination, according to an embodiment of the present application, the electric motor rotor includes a rotor core 1, the rotor core 1 includes a rotor yoke 2 and rotor teeth, the rotor teeth are disposed on the periphery of the rotor yoke 2, a plurality of rotor teeth are arranged along the circumferential direction of the rotor yoke 2 at intervals, the rotor teeth extend along the radial direction, in a cross section perpendicular to the central axis of the rotor core 1, along the radial direction from outside to inside of the rotor core 1, the rotor teeth include a first tooth section 3, a second tooth section 4 and a third tooth section 5, wherein the circumferential widths of the first tooth section 3 and the third tooth section 5 are smaller than the circumferential width of the second tooth section 4.
The motor rotor is arranged to be of a segmented structure, the rotor teeth form a structure with a wide middle and narrow ends from outside to inside along the radial direction, so that the side edges of the rotor teeth have larger contact area, a part of magnetic force lines enter the rotor from the side face of the tooth part instead of the opposite face of the tooth part, the electromagnetic torque can be kept not to be reduced, when the rotor teeth enter or leave the stator tooth area, the air gap flux density change is not so violent, the tooth space effect is weakened, and the torque fluctuation of the motor can be remarkably reduced.
The rotor tooth further comprises a fourth tooth segment 6, the fourth tooth segment 6 being located between the third tooth segment 5 and the rotor yoke 2, and the circumferential width of the fourth tooth segment 6 being greater than the circumferential width of the third tooth segment 5.
The second tooth segments 4 are arranged in a circular arc transition at the edges extending in the axial direction.
The second tooth section 4 is in a fan shape or a rectangular shape, and corners are in transition connection through arcs, so that a lantern-shaped structure is formed between the second tooth section and the first tooth section 3 and the third tooth section 5, and when the rotor teeth enter or leave the stator tooth area, the air gap magnetic density which changes violently cannot be formed in the corner area by using the surface which changes smoothly in the lantern-shaped structure, so that the air gap magnetic density change of the rotor tooth part is further improved, the air gap magnetic density is optimized, the cogging effect is further weakened, and the torque fluctuation of the motor can be further remarkably reduced.
Preferably, the radius of the arc is R, the radial thickness of the second tooth segment 4 is tr2, wherein R/tr2 is greater than or equal to 0.25 and less than or equal to 0.35, so that the size of the arc is not too large or too small, the second tooth segment 4 is ensured to have sufficient radial thickness and circumferential width to dredge the magnetic force lines, and meanwhile, a sufficiently large arc structure is provided to avoid the problem that the magnetic density forms severe magnetic density change at the corner position, and the problem that the magnetic density cannot be effectively reduced due to too small arc is avoided.
A step structure is formed between the first tooth section 3 and the second tooth section 4, and a step structure is formed between the second tooth section 4 and the third tooth section 5. In the present embodiment, the first tooth segment 3 and the third tooth segment 5 are both of an equal width structure.
In the present embodiment, the rotor core 1 is laminated by thin sheets of soft magnetic material. Rotor core 1 is last to have a plurality of rotor teeth, and the rotor tooth is radially lantern form, and the width that radially leans on outer first tooth section 3 is less than the width of second tooth section 4, and the width of second tooth section 4 is greater than the width of third tooth section 5, and the width of third tooth section 5 is less than the width of fourth tooth section 6. The rotor at the first tooth section 3 is closest to the air gap, and the design of the width of the first tooth section 3 is smaller, so that the equivalent air gap between the stator and rotor teeth can be larger, the cogging between the stator and rotor teeth can be weakened, and the torque fluctuation can be reduced.
The equivalent air gap of the first tooth segment 3 rotor is increased due to this segment, and a larger width is provided for the second tooth segment 4 rotor in order to keep the reluctance constant throughout the magnetic circuit and thus the output torque constant. Meanwhile, research shows that when the rotor rotates anticlockwise, the change of the magnetic density between the stator and the rotor is severe when the left side of the rotor tooth just enters the stator tooth or when the right side of the rotor tooth just leaves the stator tooth, and large torque fluctuation is caused.
Set up the second gear rack 4 of rotor to the great circular-arc of width can alleviate this problem well in this application, the circular-arc side can guarantee that the side has the area of contact as big as possible and stator magnetic line, magnetic line for directly sending from the stator tooth provides partial magnetic circuit, let more magnetic line of force get into the rotor rather than the positive and opposite of tooth from the side of tooth portion, keep electromagnetic torque not descend, and when the rotor tooth got into the stator tooth or left the stator tooth, circular-arc smooth broad surface can let the air gap change less violent, the cogging weakens, the torque ripple descends. The third tooth section 5 rotor is arranged at the position where the magnetic line is about to enter the rotor yoke 2 but not enter the rotor yoke 2, a smaller width is arranged to keep restraining the magnetic line for a section of magnetic circuit, the inductance difference between motor alternating shafts is increased, the output torque of the motor is improved, the width of the third tooth section 5 rotor cannot be set large, otherwise the armature magnetic line directly enters the rotor yoke from the stator teeth, and the effect of the second tooth section 4 is reduced or eliminated, as shown in fig. 3.
The maximum width of the third tooth section 5 is wr3, the maximum width of the second tooth section 4 is wr2, wherein 0.25 is less than or equal to wr3/wr2 is less than or equal to 0.35. The third tooth section 5 rotor is arranged at the position where the magnetic line of force is about to enter the rotor yoke 2 but does not enter the rotor yoke 2, and a smaller width is arranged to continuously restrain the magnetic line of force for a section of magnetic circuit, so that the output torque of the motor is improved. If the width of the third tooth segment 5 is large, the magnetic lines of force of the yoke portion are propagated in the circumferential direction and do not generate an effective torque, corresponding to the rotor yoke portion. Therefore, the rotor tooth width at this point cannot be too large. Meanwhile, the width of the third tooth section 5 cannot be too small, so that magnetic lines of force coming from the second tooth section 4 are too small to be saturated, iron loss is increased, and mechanical strength is reduced. The best effect is achieved by correlating wr3/wr 2.
The radial thickness of the first tooth section 3 is tr1, the radial thickness of the second tooth section 4 is tr2, wherein 3 is more than or equal to tr2/tr1 is less than or equal to 4. The thickness of the first tooth section 3 is large, so that an equivalent air gap is increased, the electromagnetic torque is reduced, the thickness is too small, the second tooth section 4 is closer to a stator tooth part, more armature magnetic lines of force directly enter a rotor at the second tooth section 4 from the stator tooth, the effect of a rotor guide magnetic circuit at the first tooth section 3 is reduced, and the electromagnetic torque is reduced. Rotor thickness of 4 departments of second gear rack is big, and the magnetic circuit on the rotor tooth can the overlength, arouses the magnetic leakage to increase, and electromagnetic torque descends, and the rotor of 4 departments of second gear rack is too short, and the area of whole rotor tooth is too little, and its area has decided the magnetic resistance of rotor magnetic circuit, and the area is little arouses the magnetic resistance big, and then arouses electromagnetic torque's decline. It is most effective to correlate the sizes of the two.
The radial thickness of the second tooth section 4 is tr2, the radial thickness of the third tooth section 5 is tr3, wherein tr3/tr2 is more than or equal to 0.25 and less than or equal to 0.35. The rotor at the third tooth segment 5 further guides the magnetic flux flowing in from the rotor at the second tooth segment 4. When the ratio of tr3/tr2 is too small, the magnetic lines of force guided by the second tooth segment 4 directly enter the rotor yoke, and the magnetic lines of force of the rotor yoke propagate in the circumferential direction, so that effective torque cannot be generated, and the output torque is reduced. the ratio of tr3/tr2 is increased to increase the output torque, and when the increase amplitude exceeds a certain range and continues to increase, the output torque is kept unchanged, and the mechanical strength is gradually reduced. Therefore, the thickness of the two is correlated, and the effect is better.
According to an embodiment of the present application, the switched reluctance motor includes a motor rotor, which is the motor rotor described above, and a motor stator 7.
In a cross section perpendicular to the central axis of the rotor core 1, the maximum width of the first tooth section 3 of the rotor tooth is wr1, the motor stator 7 comprises stator teeth 8, the width of the inner side of the stator teeth 8 close to the rotor teeth is ws, wherein 0.3 ≦ wr1/ws ≦ 0.33. The ratio wr1/ws is too large, so that on one hand, magnetic lines of force of an armature cannot be effectively guided into the rotor, the output torque is reduced, and on the other hand, the facing time of the rotor teeth and the stator teeth is too long in the process of rotating the rotor, so that the cogging effect is remarkable, and the torque fluctuation is increased. The wr1/ws ratio is too small, the saturation degree of the rotor teeth of the first tooth segment 3 is large, and more armature magnetic lines of force selectively pass through both sides of the rotor teeth of the first tooth segment 3, so that the electromagnetic torque decreases and the torque ripple increases, as shown in fig. 4.
In a cross section perpendicular to the central axis of the rotor core 1, the maximum width of the second tooth section 4 of the rotor tooth is wr2, the motor stator 7 comprises a stator tooth 8, the width of the inner side of the stator tooth 8 close to the rotor tooth is ws, wherein 1 ≦ wr2/ws ≦ 1.1. The ratio wr2/ws is too small, which causes the magnetic resistance of armature magnetic lines passing through the magnetic circuit of the rotor to be large, which causes the magnetic density of the air gap to be reduced and the output torque to be reduced, and the ratio wr2/ws is too large, which causes the magnetic lines on the rotor at the adjacent second tooth section 4 to be short-circuited, and the magnetic lines directly entering the rotor at the second tooth section 4 from the stator teeth to be short-circuited, which causes the output torque to be greatly reduced, as shown in fig. 5.
In the present application, the stator 7 of the motor has uniformly distributed teeth on which the windings are wound. In the present embodiment, the number of stator teeth 8 is 12, the number of rotor teeth is 8, and the connection mode of the windings is a fractional-slot winding with a pitch of 1. The motor structure of the present application is particularly suitable for fractional slot windings with a pitch of 1, subject to the winding pitch.
As shown in fig. 6, the motor formed by the motor rotor of the present application has significantly reduced torque ripple and significantly improved motor performance compared to the motor of the prior art.
It is readily understood by a person skilled in the art that the advantageous ways described above can be freely combined, superimposed without conflict.
The present invention is not intended to be limited to the particular embodiments shown and described, but is to be accorded the widest scope consistent with the principles and novel features herein disclosed. The foregoing is only a preferred embodiment of the present application, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present application, and these modifications and variations should also be considered as the protection scope of the present application.
Claims (9)
1. The motor rotor is characterized by comprising a rotor core (1), wherein the rotor core (1) comprises a rotor yoke (2) and rotor teeth, the rotor teeth are arranged on the periphery of the rotor yoke (2), the rotor teeth are arranged at intervals along the circumferential direction of the rotor yoke (2), the rotor teeth extend along the radial direction, and in a section perpendicular to the central axis of the rotor core (1) and along the radial direction of the rotor core (1) from outside to inside, the rotor teeth comprise a first tooth section (3), a second tooth section (4) and a third tooth section (5), wherein the circumferential widths of the first tooth section (3) and the third tooth section (5) are smaller than the circumferential width of the second tooth section (4); the radial thickness of the first tooth section (3) is tr1, the radial thickness of the second tooth section (4) is tr2, wherein 3 is more than or equal to tr2/tr1 is more than or equal to 4; the second tooth section (4) is fan-shaped or rectangular, and corners are in transition connection through arcs, so that a lantern-shaped structure is formed between the second tooth section and the first tooth section (3) and between the second tooth section and the third tooth section (5).
2. An electric machine rotor according to claim 1, characterized in that the rotor tooth further comprises a fourth tooth segment (6), the fourth tooth segment (6) being located between the third tooth segment (5) and the rotor yoke (2), and the circumferential width of the fourth tooth segment (6) being larger than the circumferential width of the third tooth segment (5).
3. An electric machine rotor, according to claim 2, characterized in that the radius of the circular arc is R and the radial thickness of the second tooth segment (4) is tr2, where 0.25 ≦ R/tr2 ≦ 0.35.
4. An electric machine rotor according to claim 1, characterized in that a step structure is formed between the first tooth segment (3) and the second tooth segment (4), and a step structure is formed between the second tooth segment (4) and the third tooth segment (5).
5. An electric machine rotor according to claim 1, characterised in that the maximum width of the third tooth segment (5) is wr3 and the maximum width of the second tooth segment (4) is wr2, where 0.25 ≦ wr3/wr2 ≦ 0.35.
6. An electric machine rotor according to claim 1, characterized in that the radial thickness of the second tooth segment (4) is tr2 and the radial thickness of the third tooth segment (5) is tr3, where 0.25 ≦ tr3/tr2 ≦ 0.35.
7. A switched reluctance machine comprising a machine rotor and a machine stator (7), characterized in that the machine rotor is a machine rotor according to any one of claims 1 to 6.
8. A switched reluctance machine according to claim 7, wherein the maximum width of the first tooth segment (3) of the rotor teeth in a cross-section perpendicular to the centre axis of the rotor core (1) is wr1, and the stator (7) of the machine comprises stator teeth (8), the width of the inner side of the stator teeth (8) near the rotor teeth being ws, where 0.3. ltoreq. wr 1/ws. ltoreq.0.33.
9. A switched reluctance machine according to claim 7, wherein the maximum width of the second tooth segment (4) of the rotor tooth in a cross-section perpendicular to the centre axis of the rotor core (1) is wr2, and the stator (7) of the machine comprises stator teeth (8), the width of the inner side of the stator teeth (8) adjacent to the rotor teeth being ws, where 1. ltoreq. wr 2/ws. ltoreq.1.1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911295404.7A CN111049295B (en) | 2019-12-16 | 2019-12-16 | Motor rotor and switched reluctance motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911295404.7A CN111049295B (en) | 2019-12-16 | 2019-12-16 | Motor rotor and switched reluctance motor |
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| Publication Number | Publication Date |
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| CN111049295A CN111049295A (en) | 2020-04-21 |
| CN111049295B true CN111049295B (en) | 2021-07-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201911295404.7A Active CN111049295B (en) | 2019-12-16 | 2019-12-16 | Motor rotor and switched reluctance motor |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1989002670A1 (en) * | 1987-09-10 | 1989-03-23 | Digital Equipment Corporation | Armature for dc motor |
| CN101702562A (en) * | 2009-11-09 | 2010-05-05 | 南京航空航天大学 | Non-overlapping winding sectional rotor switched reluctance motor (SRM) |
| CN207410125U (en) * | 2017-11-08 | 2018-05-25 | 哈尔滨理工大学 | A kind of novel switched reluctance motor structure |
| CN209593113U (en) * | 2019-04-18 | 2019-11-05 | 苏州达思灵电机有限公司 | Double salient-pole electric machine rotor structure |
-
2019
- 2019-12-16 CN CN201911295404.7A patent/CN111049295B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1989002670A1 (en) * | 1987-09-10 | 1989-03-23 | Digital Equipment Corporation | Armature for dc motor |
| CN101702562A (en) * | 2009-11-09 | 2010-05-05 | 南京航空航天大学 | Non-overlapping winding sectional rotor switched reluctance motor (SRM) |
| CN207410125U (en) * | 2017-11-08 | 2018-05-25 | 哈尔滨理工大学 | A kind of novel switched reluctance motor structure |
| CN209593113U (en) * | 2019-04-18 | 2019-11-05 | 苏州达思灵电机有限公司 | Double salient-pole electric machine rotor structure |
Non-Patent Citations (1)
| Title |
|---|
| Guangjin Li.Javier Ojeda,Sami Hlioui,Emmanuel Hoang.Modification in Rotor Pole Geometry of Mutually Coupled Switched Reluctance Machine for Torque Ripple Mitigating.《IEEE Transactions on Magnetics》.2012,第2025-2033页. * |
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| CN111049295A (en) | 2020-04-21 |
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