CN110829662B - Parallel structure hybrid excitation brushless motor and power generation system thereof - Google Patents
Parallel structure hybrid excitation brushless motor and power generation system thereof Download PDFInfo
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- 230000005284 excitation Effects 0.000 title claims abstract description 82
- 238000010248 power generation Methods 0.000 title claims abstract description 21
- 238000004804 winding Methods 0.000 claims abstract description 110
- 230000001360 synchronised effect Effects 0.000 claims abstract description 74
- 230000001105 regulatory effect Effects 0.000 claims abstract description 3
- 230000004888 barrier function Effects 0.000 claims description 46
- 230000004907 flux Effects 0.000 claims description 6
- 230000004323 axial length Effects 0.000 claims description 4
- 230000001276 controlling effect Effects 0.000 claims description 4
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- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 3
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K3/00—Details of windings
- H02K3/04—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors
- H02K3/28—Layout of windings or of connections between windings
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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
- H02K1/246—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
- H02K19/16—Synchronous generators
- H02K19/26—Synchronous generators characterised by the arrangement of exciting windings
- H02K19/30—Synchronous generators characterised by the arrangement of exciting windings for compounding
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K21/00—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets
- H02K21/12—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets
- H02K21/14—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets with magnets rotating within the armatures
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Abstract
The invention discloses a parallel structure hybrid excitation brushless motor and a power generation system thereof. The parallel structure hybrid excitation brushless motor comprises a permanent magnet synchronous motor and an electro-magnetic synchronous reluctance motor which are arranged in parallel with a common rotating shaft; the permanent magnet synchronous motor comprises an armature stator, a synchronous rotor and a permanent magnet; an armature winding I is wound on the armature stator; the electrically excited synchronous reluctance motor comprises an excitation stator and a reluctance rotor; the excitation stator is wound with an armature winding II and an alternating-current excitation winding, and the armature winding I and the armature winding II are connected in series to form a total armature winding; the number of pole pairs of the synchronous rotor is equal to the number of pole pairs of the reluctance rotor. The voltage regulation of the total armature winding can be realized by regulating the size and the direction of the direct-axis exciting current in the exciting winding. The invention has the advantages of high power density, adjustable magnetic field and no coupling between the excitation magnetic field and the permanent magnetic field.
Description
Technical Field
The invention relates to the field of motor design and manufacture, in particular to a parallel structure hybrid excitation brushless motor and a power generation system thereof.
Background
Permanent magnet motors have the advantages of high torque/power density, high efficiency, high power factor, etc., and have found use in many applications. However, field weakening of permanent magnet motors is achieved by controlling the direct-axis current component in the armature windingi d ) To achieve this, permanent magnets have the risk of irreversible demagnetization and have limited flux weakening capability. Moreover, when the permanent magnet motor is applied to power generation occasions such as an aviation power supply and the like, a full-power controllable converter is needed to realize voltage regulation.
Due to the existence of the rotor direct-current excitation winding, the air gap magnetic field of the electrically excited synchronous motor is easy to adjust. However, the rotor is a rotating body, and brushless dc excitation of the rotor is complicated. Therefore, an electrically excited synchronous motor requires an additional exciter to achieve brushless excitation, increasing motor complexity and having low power density.
The rotor of the switched reluctance motor has no permanent magnet or winding, has simple and reliable structure and is suitable for high-temperature and high-speed operation. However, the switched reluctance motor also needs a full-power controllable converter to realize reactive power excitation during power generation operation, and the power factor is low.
The synchronous reluctance motor also has the advantages of simple and reliable structure of the switched reluctance motor, and is applied to driving occasions such as electric automobiles and the like. However, the conventional synchronous reluctance motor has no excitation source and generates reluctance torque by a salient pole effect. Therefore, such machines can only be operated as electric motors.
The conventional excitation source is dc excitation, i.e. adding dc excitation windings to the rotor or stator. However, even if a dc excitation winding is added to the stator, the conventional synchronous reluctance motor cannot generate a rotating excitation magnetic field that rotates synchronously with the rotor, and thus cannot realize excitation; and the direct current excitation winding is added on the rotor, and the direct current is provided for the direct current winding only by installing the electric brush and the slip ring, so that the reliability of the system is inevitably reduced by the armature and the slip ring.
Disclosure of Invention
The invention aims to solve the technical problem of the prior art and provides a parallel structure hybrid excitation brushless motor and a power generation system thereof, wherein the parallel structure hybrid excitation brushless motor organically combines an alternating current excitation type synchronous reluctance motor and a permanent magnet synchronous motor, inherits the advantages of high power density and the like of the permanent magnet synchronous motor, and has the advantage of adjustable magnetic field of the electro-excitation synchronous reluctance motor.
In order to solve the technical problems, the invention adopts the technical scheme that:
a parallel structure hybrid excitation brushless motor comprises a permanent magnet synchronous motor and an electro-magnetic synchronous reluctance motor, wherein the permanent magnet synchronous motor and the electro-magnetic synchronous reluctance motor are arranged in parallel on a common rotating shaft.
The permanent magnet synchronous motor comprises an armature stator, a synchronous rotor and a permanent magnet.
The armature stator is wound with an armature winding I, and the permanent magnet is positioned on the armature stator or the synchronous rotor.
An electrically excited synchronous reluctance machine includes an excited stator and a reluctance rotor.
And the excitation stator is wound with an armature winding II and an excitation winding, and the armature winding I and the armature winding II are connected in series to form a total armature winding. And the armature winding II and the excitation winding are both alternating current windings, and the number of pole pairs of the armature winding II and the excitation winding II is equal to that of the pole pairs of the reluctance rotor.
The number of pole pairs of the synchronous rotor is equal to that of the reluctance rotor, and is p.
The voltage regulation of the total armature winding can be realized by regulating the size and the direction of the direct-axis exciting current in the exciting winding, so that the voltage of the two output ends of the armature winding and the voltage of the two output ends of the armature winding are mutually superposed or offset.
When the permanent magnets are positioned on the armature stator, the synchronous rotor is a salient pole rotor, and the number of pairs of salient poles in the synchronous rotor is equal to the number of pole pairs of the reluctance rotor.
The outer diameter of the reluctance rotor is smaller than or equal to the outer diameter of the synchronous rotor.
The direct-axis magnetic resistance and the quadrature-axis magnetic resistance of the reluctance rotor are not equal, and the mechanical angle of a quadrature-axis lagging direct axis in the reluctance rotor is 360/(4 × p).
The reluctance rotor is a salient pole rotor, the direct axis is the central line of a salient pole of the reluctance rotor, and the quadrature axis is the central line of two salient poles in the reluctance salient pole rotor.
The reluctance rotor is a magnetic barrier rotor, the straight axis is the central line of the two groups of magnetic barriers, and the quadrature axis is the central line of the magnetic barriers.
The reluctance rotor is a mixed rotor formed by mixing salient poles and magnetic barriers, the mixed rotor comprises 2p salient poles and 2p magnetic barrier groups, the 2p magnetic barrier groups are arranged on a rotor iron core between every two adjacent salient poles, each magnetic barrier group is a single-layer magnetic barrier or a multi-layer magnetic barrier, and each magnetic barrier is arc-shaped, V-shaped or strip-shaped.
According to different application occasions and requirements, the required magnetic regulation and output capacity is obtained by adjusting the axial length proportion of the permanent magnet synchronous motor and the electro-magnetic synchronous reluctance motor.
A parallel structure hybrid excitation brushless power generation system comprises a parallel structure hybrid excitation brushless motor, a power converter, a power supply, an uncontrollable rectifier, a direct current electrical load and an alternating current electrical load.
The input end of the excitation winding is connected with a power supply through a power converter. The magnetic flux generated by the field winding passes through the low reluctance path formed by the straight shaft, thereby establishing an air gap magnetic field. The power converter controls the size and direction of the direct-axis exciting current of the exciting winding to realize the adjustment of the air-gap magnetic field, and further realize the adjustment of the output voltage of the output end of the total armature winding.
When direct current power generation is needed, the output end of the main armature winding is connected with a direct current electrical load through an uncontrollable rectifier.
When alternating current power generation is needed, the output end of the total armature winding is directly connected with an alternating current electrical load.
The uncontrollable rectifier is a bridge type diode collator.
The invention has the following beneficial effects:
1. the total armature winding is formed by connecting the armature winding I and the armature winding II in series, so that the armature voltage regulation of the electrically excited synchronous reluctance motor can inevitably result in the total voltage regulation of the parallel structure hybrid excitation brushless motor.
2. The number of pole pairs of the synchronous rotor is equal to that of the reluctance rotor, so that the voltage frequencies of the first armature winding and the second armature winding are the same, and the voltage at the output end of the first armature winding and the voltage at the output end of the second armature winding are mutually superposed or offset.
3. When the parallel structure hybrid excitation brushless motor is used as a generator, only a power converter capable of controlling an alternating current excitation winding is needed, and a full-power controllable converter is not needed, so that the capacity of the converter is greatly reduced. The total armature winding is connected with an uncontrollable rectifier (such as bridge diode rectification) to realize direct current power generation; the total armature winding is directly connected with an alternating current load to realize alternating current power generation.
4. The voltage regulation of the whole parallel motor can be realized by changing the size and the direction of the direct-axis exciting current of the alternating-current exciting winding of the electrically excited synchronous reluctance motor. When the magnetism is increased, the direction of the air gap magnetic field of the electric excitation synchronous reluctance motor part is the same as that of the air gap magnetic field of the permanent magnet part, and the armature voltage of the whole parallel motor is superposed by the two parts, so that the pressurization is realized; when the magnetism is weak, the direction of the air gap field of the electric excitation synchronous reluctance motor part is opposite to that of the air gap field of the permanent magnet part, and the voltage of the electric excitation synchronous reluctance motor part counteracts the voltage of the permanent magnet part, so that the voltage reduction is realized.
5. The stator and the rotor iron core are made of magnetic conductive materials.
6. The invention can be an inner rotor motor and an outer rotor motor.
7. The motor can be operated electrically and also can be operated by power generation.
8. The outer diameter of the rotor of the electro-magnetic synchronous reluctance motor can be smaller than that of the rotor of the permanent magnet synchronous motor.
9. The axial length proportion of the permanent magnet synchronous motor and the electro-magnetic synchronous reluctance motor can be flexibly adjusted according to different application occasions and requirements, and the required magnetic regulation and output capacity can be obtained.
Drawings
Fig. 1 is a schematic structural diagram of a parallel hybrid excitation brushless power generation system according to the present invention.
Fig. 2 shows a schematic cross-sectional structure of a permanent magnet synchronous machine according to the invention.
Fig. 3 shows a schematic cross-sectional structure of an electrically excited synchronous reluctance machine according to the present invention.
Fig. 4 is a perspective view of the hybrid excitation brushless motor with the parallel structure without the stator.
Fig. 5 shows a diagram of an embodiment of the present invention in which the reluctance rotor is a magnetic barrier rotor.
Fig. 6 shows an example of the case where the reluctance rotor is a salient pole rotor in the present invention.
Fig. 7 shows an example of the case where the reluctance rotor is a hybrid rotor in which magnetic barriers and salient poles are combined according to the present invention.
Among them are:
11. an armature stator; 111. an armature winding I; 12. a synchronous rotor; 121. a permanent magnet;
21. an excitation stator; 211. an armature winding II; 212. an excitation winding; 22. a reluctance rotor; 221. a magnetic barrier; 222. a strip-shaped tangential magnetic barrier; 223. salient poles;
30. a rotating shaft.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific preferred embodiments.
In the description of the present invention, it is to be understood that the terms "left side", "right side", "upper part", "lower part", etc., indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and that "first", "second", etc., do not represent an important degree of the component parts, and thus are not to be construed as limiting the present invention. The specific dimensions used in the present example are only for illustrating the technical solution and do not limit the scope of protection of the present invention.
The invention uses three-phase inner rotor m =3,N s =36，pdescription will be given with respect to =3 as an example. That is, the number of phases m =3 of the armature winding and the number of stator slotsN s =36, number of pole pairs of rotorp=3。
As shown in fig. 2 to 4, a parallel hybrid-excitation brushless motor includes a permanent magnet synchronous motor and an electrically-excited synchronous reluctance motor, which are arranged in parallel with a common rotating shaft 30.
As shown in fig. 2, the permanent magnet synchronous motor includes an armature stator 11, a synchronous rotor 12, and a permanent magnet 121.
An armature winding one 111 is wound on the armature stator, as shown in fig. 3, the armature winding one is preferably three-phase, and the chalk is a1, B1 and C1. The phase A1 can be formed by connecting coils A11-A16 in series, or can be formed by connecting coils A11-A12, A13-A14 and A15-A16 in series respectively and then in parallel. B1 phase, C1 phase and the like.
The permanent magnet is positioned on the armature stator or the synchronous rotor, and the permanent magnet preferably adopts built-in magnetic steel so as to overcome the influence of the centrifugal force of the synchronous rotor on the permanent magnet.
As shown in fig. 3, the electrically excited synchronous reluctance motor includes an excited stator 21 and a reluctance rotor 22.
And the excitation stator is wound with an armature winding II 211 and an excitation winding 212, and the armature winding I and the armature winding II are connected in series to form a total armature winding. The second armature winding and the excitation winding are both alternating current windings, and the number of the two pole pairs of the armature winding is preferably equal to the number of the pole pairs of the excitation winding and is equal to 3 of the pole pairs of the rotor.
The excitation winding 212 is an alternating current excitation winding, can generate a rotating magnetic field after alternating current is introduced, and establishes an air gap magnetic field by closing an excitation flux path provided by an air gap and a rotor straight shaft, so that brushless excitation is realized.
The number of phases of the armature winding II and the excitation winding is preferably equal, and the armature winding II and the excitation winding are three-phase. The three-phase armature windings on the excitation stator are respectively A2, B2 and C2. The phase A2 can be formed by connecting coils A21-A26 in series, or can be formed by connecting coils A21-A22, A23-A24 and A25-A26 in series respectively and then in parallel. B2 phase, C2 phase and the like. The three-phase excitation windings are respectively X, Y, Z, only X-phase windings are shown in the figure, and X, Y, Z phases are sequentially different by 120 degrees in a counterclockwise direction. An air gap is provided between the stator and the rotor. The armature winding II is arranged on the outer side of the excitation winding, and the positions of the armature winding II and the excitation winding can be interchanged.
The number of pole pairs of the synchronous rotor is equal to that of the reluctance rotor, and is p.
When the permanent magnets are positioned on the armature stator, the synchronous rotor is a salient pole rotor, and the number of pairs of salient poles in the synchronous rotor is equal to the number of pole pairs of the reluctance rotor.
When the permanent magnets are located on the synchronous rotor, the synchronous rotor is a permanent magnet rotor, and as shown in fig. 2, the number of pole pairs of the permanent magnet rotor is equal to the number of pole pairs of the reluctance rotor.
The outer diameter of the reluctance rotor is smaller than or equal to the outer diameter of the synchronous rotor. The stator of the electrically excited synchronous reluctance motor part is provided with two sets of windings, so that the inner diameter of the stator can be smaller in order to increase the available space of stator slots.
According to different application occasions and requirements, the required magnetic regulation and output capacity is obtained by adjusting the axial length proportion of the permanent magnet synchronous motor and the electro-magnetic synchronous reluctance motor.
The magnetic resistance rotor has unequal direct-axis magnetic resistance and quadrature-axis magnetic resistance, and the structure of the magnetic resistance rotor has the following preferred embodiments.
EXAMPLE 1 reluctance rotor as Barrier rotor
As shown in fig. 3, the magnetic barrier rotor includes 2p magnetic barrier groups uniformly distributed along the circumferential direction of the rotor, and each magnetic barrier group includes one or more magnetic barriers 221 arranged in a stacked manner. The shape of each layer of magnetic barrier is preferably arc, V or strip, and in the embodiment, the shape is preferably arc.
The straight axis is the central line of the two groups of magnetic barriers 221, the quadrature axis is the central line of the magnetic barriers 221, and the quadrature axis lags the straight axis by 90 electrical angles, that is, the lagging mechanical angle is 360/(4 × p).
Further, as shown in fig. 5, the magnetic barrier rotor further includes a bar-shaped tangential magnetic barrier 222, and a bar-shaped tangential magnetic barrier arranged along the radial direction is disposed between two adjacent magnetic barrier groups, that is, the bar-shaped tangential magnetic barrier is located on the straight axis.
EXAMPLE 2 reluctance rotor as salient pole rotor
As shown in fig. 6, the direct axis is the center line of the rotor salient poles 223, and the quadrature axis is the center line of both the salient poles 223 in the salient pole rotor.
EXAMPLE 3 reluctance rotor as Mixed-Pole rotor
As shown in fig. 7, the reluctance rotor is a hybrid rotor in which salient poles and magnetic barriers are mixed, and the hybrid rotor includes 2p salient poles and 2p magnetic barrier groups, and the 2p magnetic barrier groups are disposed on the rotor core between two adjacent salient poles, that is, on the straight axis. The quadrature magnetic barrier is for reducing the magnetic resistance of quadrature magnetic circuit, simultaneously, does not influence the direct magnetic circuit: because the direct-axis magnetic circuit is a low reluctance path provided for the excitation flux, excitation regulation is facilitated.
Each magnetic barrier group is a single-layer magnetic barrier or a multi-layer magnetic barrier, the shape of each magnetic barrier is preferably arc, V or strip, and in this embodiment, the shape is preferably arc. The magnetic barrier has the function of reducing the magnetic resistance of the quadrature magnetic circuit, so that a salient pole effect is formed.
As shown in fig. 1, a parallel structure hybrid excitation brushless power generation system includes a parallel structure hybrid excitation brushless motor, a power converter, a power supply, an uncontrollable rectifier, a dc electrical load and an ac electrical load.
When direct current power generation is needed, the output end of the main armature winding is connected with a direct current electrical load through an uncontrollable rectifier. The uncontrollable rectifier is preferably a bridge diode rectifier.
When alternating current power generation is needed, the output end of the total armature winding is directly connected with an alternating current electrical load.
The input end of the excitation winding is connected with a power supply through a power converter. The magnetic flux generated by the field winding passes through the low reluctance path formed by the straight shaft, thereby establishing an air gap magnetic field. The power converter controls the size and direction of the direct-axis exciting current of the exciting winding to realize the adjustment of the air-gap magnetic field, so that the adjustment of the output voltage of the output end of the total armature winding is realized, and the voltage of the output end of the armature winding are mutually superposed or offset.
In order to realize the mutual superposition or cancellation of the voltage at the two output ends of the armature winding and the voltage at the two output ends of the armature winding, the voltage frequencies of the two armature windings must be the same. And the frequency depends on the number of pole pairs and the rotational speed of the motor. Meanwhile, the two rotors rotate coaxially, and the two rotors necessarily have the same rotating speed. Therefore, in order to meet the same frequency of voltage, if the motor is coaxial and parallel with the rotor permanent magnet type motor, the number of the rotor pole pairs of the two parts of motors needs to be equal; if the permanent magnet motor is coaxial and parallel with a stator permanent magnet type motor adopting a salient pole rotor, the number of salient poles of the rotor of the stator permanent magnet motor needs to be equal to the number of pole pairs of the rotor of the electrically excited synchronous reluctance motor.
Further, to achieve effective superposition of the armature voltage of the permanent magnet part and the armature voltage of the electrically excited part, it is not only necessary that the voltages of the two sets of windings have the same frequency (the same number of pole pairs). But also to ensure that they have the same phase. Therefore, the straight axis of the permanent magnet rotor and the straight axis of the electrically excited rotor need to be aligned in the axial direction. Wherein, the straight axis of the permanent magnet rotor is the center line of the magnetic pole.
When the magnetism is increased, the direction of the air gap magnetic field of the electric excitation synchronous reluctance motor part is the same as that of the air gap magnetic field of the permanent magnet part, and the total armature voltage of the whole parallel motor is the superposition of the two parts, so that the pressurization is realized; when the magnetism is weak, the direction of the air gap field of the electric excitation synchronous reluctance motor part is opposite to that of the air gap field of the permanent magnet part, and the voltage of the electric excitation synchronous reluctance motor part counteracts the voltage of the permanent magnet part, so that the voltage reduction is realized.
When the generator is used, only a power converter capable of controlling the excitation winding is needed, and a full-power converter is not needed, so that the capacity of the converter is greatly reduced.
Although the preferred embodiments of the present invention have been described in detail, the present invention is not limited to the details of the embodiments, and various equivalent modifications can be made within the technical spirit of the present invention, and the scope of the present invention is also within the scope of the present invention.
Claims (9)
1. The utility model provides a parallel structure hybrid excitation brushless motor which characterized in that: the permanent magnet synchronous motor and the electro-magnetic synchronous reluctance motor are arranged in parallel on a common rotating shaft;
the permanent magnet synchronous motor comprises an armature stator, a synchronous rotor and a permanent magnet;
the armature stator is wound with a first armature winding, and the permanent magnet is positioned on the armature stator or the synchronous rotor;
the electrically excited synchronous reluctance motor comprises an excitation stator and a reluctance rotor;
the excitation stator is wound with an armature winding II and an excitation winding, and the armature winding I and the armature winding II are connected in series to form a total armature winding; the armature winding II and the excitation winding are both alternating current windings, and the number of pole pairs of the armature winding II and the excitation winding II is equal to the number of pole pairs of the reluctance rotor;
the number of pole pairs of the synchronous rotor is equal to that of the reluctance rotor, and is p;
the voltage regulation of the total armature winding can be realized by regulating the size and the direction of the direct-axis exciting current in the exciting winding, so that the voltage at the output end of the armature winding I and the voltage at the output end of the armature winding II are mutually superposed or offset;
the direct-axis magnetic resistance and the quadrature-axis magnetic resistance of the reluctance rotor are not equal, and the mechanical angle of a quadrature-axis lagging direct axis in the reluctance rotor is 360/(4 × p).
2. The parallel structure hybrid excitation brushless motor according to claim 1, wherein: when the permanent magnets are positioned on the armature stator, the synchronous rotor is a salient pole rotor, and the number of pairs of salient poles in the synchronous rotor is equal to the number of pole pairs of the reluctance rotor.
3. The parallel structure hybrid excitation brushless motor according to claim 1, wherein: the outer diameter of the reluctance rotor is smaller than or equal to the outer diameter of the synchronous rotor.
4. The parallel structure hybrid excitation brushless motor according to claim 1, wherein: the reluctance rotor is a salient pole rotor, the direct axis is the central line of a salient pole of the reluctance rotor, and the quadrature axis is the central line of two salient poles in the reluctance salient pole rotor.
5. The parallel structure hybrid excitation brushless motor according to claim 1, wherein: the reluctance rotor is a magnetic barrier rotor, the straight axis is the central line of the two groups of magnetic barriers, and the quadrature axis is the central line of the magnetic barriers.
6. The parallel structure hybrid excitation brushless motor according to claim 1, wherein: the reluctance rotor is a mixed rotor formed by mixing salient poles and magnetic barriers, the mixed rotor comprises 2p salient poles and 2p magnetic barrier groups, the 2p magnetic barrier groups are arranged on a rotor iron core between every two adjacent salient poles, each magnetic barrier group is a single-layer magnetic barrier or a multi-layer magnetic barrier, and each magnetic barrier is arc-shaped, V-shaped or strip-shaped.
7. The parallel structure hybrid excitation brushless motor according to claim 1, wherein: according to different application occasions and requirements, the required magnetic regulation and output capacity is obtained by adjusting the axial length proportion of the permanent magnet synchronous motor and the electro-magnetic synchronous reluctance motor.
8. A parallel structure hybrid excitation brushless power generation system is characterized in that: comprising a parallel configuration hybrid excitation brushless motor according to any one of claims 1 to 7, a power converter, a power supply source, an uncontrollable rectifier, a direct current electrical load and an alternating current electrical load;
the input end of the excitation winding is connected with a power supply through a power converter; the magnetic flux generated by the excitation winding passes through a low reluctance path formed by the straight shaft, so that an air gap magnetic field is established; the power converter is used for controlling the size and the direction of a direct-axis exciting current of the exciting winding to realize the adjustment of an air-gap magnetic field, so that the adjustment of the output voltage of the output end of the total armature winding is realized;
when direct current power generation is needed, the output end of the main armature winding is connected with a direct current electrical load through an uncontrollable rectifier;
when alternating current power generation is needed, the output end of the total armature winding is directly connected with an alternating current electrical load.
9. The parallel structure hybrid excitation brushless power generation system according to claim 8, wherein: the uncontrollable rectifier is a bridge diode rectifier.
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| CN113489271B (en) * | 2021-06-21 | 2022-06-10 | 南京航空航天大学 | AC-DC hybrid excitation type motor power generation system |
| CN113708527B (en) * | 2021-09-02 | 2022-09-20 | 哈尔滨工业大学（威海） | Non-salient pole type electro-magnetic wound rotor and synchronous motor thereof |
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|---|---|---|---|---|
| CN102005876B (en) * | 2010-11-08 | 2013-03-06 | 华北电力大学 | Paratactic structure hybrid excitation synchronous machine (HESM) and alternating current excitation control system thereof |
| CN102005875B (en) * | 2010-11-08 | 2013-06-05 | 华北电力大学 | Brushless parallel-structure hybrid excitation synchronous generator without additional air gap |
| CN102843008A (en) * | 2012-09-07 | 2012-12-26 | 南京航空航天大学 | Parallel type mixed excitation alternating-current generator |
| CN105048740B (en) * | 2015-07-08 | 2018-05-08 | 南京航空航天大学 | A kind of permanent magnetism and variable reluctance block form mixed excitation brushless |
| CN107896038B (en) * | 2017-10-31 | 2020-07-28 | 南京航空航天大学 | Double-winding hybrid excitation brushless direct current integrated power generation system and control method thereof |
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2019
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