DESC:TWO-PART STATOR TOOTH FOR A MOTOR
CROSS REFERENCE TO RELATED APPLICTIONS
The present application claims priority from Indian Provisional Patent Application No. 202221049851 filed on 31/08/2022, the entirety of which is incorporated herein by a reference.
TECHNICAL FIELD
Generally, the present disclosure relates to a stator tooth for a motor of an electric vehicle. Particularly, the present disclosure relates to a two-part stator tooth for a hybrid flux motor. Furthermore, the present disclosure also relates to a stator for a hybrid flux motor.
BACKGROUND
Recently, electric vehicles have emerged as an alternative to conventional vehicles using gasoline diesel, and similar fossil fuels. Electric vehicles require traction motors to convert the electrical energy into mechanical energy for driving the vehicle. There are multiple types of electric motors being used in electric vehicles. Some known types of electrical motors are radial flux motors and axial flux motors. The radial flux motors are more commonly used as they are known for a longer time, however, radial flux motors have limitations such as longer axial length, low power and torque density, and higher losses and weight.
The axial flux motors overcome these limitations, because, in the axial flux motor, the direction of the lines of magnetic flux that are cut during the operation of the motor is parallel to the rotational axis of the motor. The axial flux motors have characteristics including small axial length, higher power and torque density, lesser losses, and lesser weight compared to radial flux motors.
The axial flux motor comprises a stator having a plurality of wound core teeth or stator assemblies arranged circumferentially. The wound core tooth comprises a bobbin, a core, and conductors wound over the bobbin. However, the stator of the axial flux motor is difficult to assemble due to the requirement of a segmented design. Moreover, the power density is limited by the size and weight of the motor. Furthermore, the axial flux motors have thermal issues and suffer lower efficiency at high speeds. To overcome the limitations of the radial flux motors and the axial flux motors, hybrid flux motors have been developed as a solution combining the advantages of the radial flux motors and the axial flux motors. However, the stator design of the hybrid flux motors is highly complex. Moreover, the stator assembly of the hybrid flux motors is difficult to assemble due to the complex structure of the wound core teeth. Specifically, it is difficult to secure the wound core teeth together to form the stator assembly. Consequently, the stator assembly of the hybrid flux motor suffers reduced flux utilization and increased noise and vibrations due to the inefficiencies in the tooth design. Such problems might even lead to motor failure in some cases.
Therefore, there exists a need for an improved stator tooth for hybrid flux motors that overcomes one or more problems associated with the conventional stator assemblies of the hybrid flux motors as set forth above.
SUMMARY
An object of the present disclosure is to provide a two-part stator tooth for a hybrid flux motor.
Another object of the present disclosure is to provide a stator assembly for a hybrid flux motor of an electric vehicle with increased efficiency and power density.
In accordance with an aspect of the present disclosure, there is provided a two-part stator tooth for a hybrid flux motor. The two-part stator tooth comprises an axial-field segment and a radial-field segment. The axial-field segment comprises a pair of mutually opposite axial-field faces, an interlocking face, and an outer face. The radial-field segment comprises a radial-field face, a locking protrusion face, and a pair of mutually opposite side faces. The locking protrusion face of the radial-field segment and the interlocking face of the axial-field segment are locked together to form the two-part stator tooth.
The present disclosure provides a two-part stator tooth capable of providing improved efficiency and power density in the hybrid flux motor. Advantageously, the present invention provides an easy-to-assemble and disassemble two-part stator tooth of stator assembly for the hybrid flux motor. Furthermore, the two-part stator tooth has lower non-flux weight i.e., low weight of components that are not generating any flux, resulting in increased power density and efficiency. Furthermore, the two-part stator tooth is capable of directing hybrid magnetic flux, i.e., magnetic flux in both radial and axial directions. Beneficially, the two-part stator tooth is capable of directing the magnetic flux in three directions comprising radially inward and mutually opposite axial directions. Advantageously, the two-part stator tooth is cost-efficient in manufacturing and provides ease of servicing and maintenance for the stator assembly. Beneficially, the two-part stator tooth enables efficient utilization of the space inside the hybrid flux motor resulting in compact size of the hybrid flux motor despite increased power density. Beneficially, the two-part stator tooth is suitable for manufacturing hybrid flux motors used in high-power applications such as used in the powertrain of electric vehicles. Beneficially, the two-part stator tooth is advantageous in terms of reducing flux leakage and maximizing flux utilization resulting in higher power density and efficiency of the hybrid motor. Beneficially, the two-part stator tooth is advantageous in terms of reducing vibrations in the stator assembly of the hybrid flux motor.
In accordance with the second aspect of the present disclosure, there is provided a stator assembly for a hybrid flux motor, comprising a plurality of two-part stator teeth.
Additional aspects, advantages, features, and objects of the present disclosure would be made apparent from the drawings and the detailed description of the illustrative embodiments constructed in conjunction with the appended claims that follow.
It will be appreciated that features of the present disclosure are susceptible to being combined in various combinations without departing from the scope of the present disclosure as defined by the appended claims.
BRIEF DESCRIPTION OF DRAWINGS
The summary above, as well as the following detailed description of illustrative embodiments, is better understood when read in conjunction with the appended drawings. For the purpose of illustrating the present disclosure, exemplary constructions of the disclosure are shown in the drawings. However, the present disclosure is not limited to specific methods and instrumentalities disclosed herein. Moreover, those in the art will understand that the drawings are not to scale. Wherever possible, like elements have been indicated by identical numbers.
Embodiments of the present disclosure will now be described, by way of example only, with reference to the following diagrams wherein:
Figure 1 illustrates a perspective view of a two-part stator tooth for a hybrid flux motor, in accordance with an embodiment of the present disclosure.
Figure 2 illustrates a perspective view of the two-part stator tooth with flux coils, in accordance with an embodiment of the present disclosure.
Figure 3 illustrates an exploded view of a stator assembly for a hybrid flux motor, in accordance with an embodiment of the present disclosure.
In the accompanying drawings, an underlined number is employed to represent an item over which the underlined number is positioned or an item to which the underlined number is adjacent. A non-underlined number relates to an item identified by a line linking the non-underlined number to the item. When a number is non-underlined and accompanied by an associated arrow, the non-underlined number is used to identify a general item at which the arrow is pointing.
DETAILED DESCRIPTION
The following detailed description illustrates embodiments of the present disclosure and ways in which they can be implemented. Although some modes of carrying out the present disclosure have been disclosed, those skilled in the art would recognize that other embodiments for carrying out or practicing the present disclosure are also possible.
The description set forth below in connection with the appended drawings is intended as a description of certain embodiments of a two-part stator tooth for a hybrid flux motor and is not intended to represent the only forms that may be developed or utilized. The description sets forth the various structures and/or functions in connection with the illustrated embodiments; however, it is to be understood that the disclosed embodiments are merely exemplary of the disclosure that may be embodied in various and alternative forms. The figures are not necessarily to scale; some features may be exaggerated or minimized to show details of particular components. Therefore, specific structural and functional details disclosed herein are not to be interpreted as limiting, but merely as a representative basis for teaching one skilled in the art to variously employ the present invention.
While the disclosure is susceptible to various modifications and alternative forms, specific embodiment thereof has been shown by way of example in the drawings and will be described in detail below. It should be understood, however, that it is not intended to limit the disclosure to the particular forms disclosed, but on the contrary, the disclosure is to cover all modifications, equivalents, and alternatives falling within the scope of the disclosure.
The terms “comprise”, “comprises”, “comprising”, “include(s)”, or any other variations thereof, are intended to cover a non-exclusive inclusion, such that a setup, or system that comprises a list of components or steps does not include only those components or steps but may include other components or steps not expressly listed or inherent to such setup or system. In other words, one or more elements in a system or apparatus preceded by “comprises... a” does not, without more constraints, preclude the existence of other elements or additional elements in the system or apparatus.
In the following detailed description of the embodiments of the disclosure, reference is made to the accompanying drawings which are shown by way of illustration-specific embodiments in which the disclosure may be practiced. These embodiments are described in sufficient detail to enable those skilled in the art to practice the disclosure, and it is to be understood that other embodiments may be utilized and that changes may be made without departing from the scope of the present disclosure. The following description is, therefore, not to be taken in a limiting sense.
The present disclosure will be described herein below with reference to the accompanying drawings. In the following description, well-known functions or constructions are not described in detail since they would obscure the description with unnecessary detail.
As used herein, the terms “electric vehicle”, “EV”, and “EVs” are used interchangeably and refer to any vehicle having stored electrical energy, including the vehicle capable of being charged from an external electrical power source. This may include vehicles having batteries that are exclusively charged from an external power source, as well as hybrid vehicles which may include batteries capable of being at least partially recharged via an external power source. Additionally, it is to be understood that the ‘electric vehicle’ as used herein includes electric two-wheelers, electric three-wheelers, electric four-wheelers, electric pickup trucks, electric trucks, and so forth.
As used herein, the terms “electric motor”, “motor”, “hybrid motor”, “hybrid flux motor” and “radial-axial flux motor” are used interchangeably and refer to electric motors capable of being implemented in an industrial or automobile application, such as on the work machine or other vehicle. The hybrid flux motor is a type of electric motor that combines the radial and axial flux configurations. The hybrid flux motor comprises permanent magnets arranged radially around the stator and permanent magnets arranged axially along the stator. The hybrid flux motors combine the advantages of both radial and axial configurations, such as the high torque density of radial flux motors and the high efficiency of axial flux motors. The hybrid flux motor comprises a combination of axial flux rotors and radial flux rotors.
As used herein, the terms “stator” and “stator assembly” are used interchangeably and refer to the stationary part of a motor which provides a magnetic field that drives the rotors (the rotating component of the motor). The stator may act as a field magnet. The stator typically consists of a disc-shaped structure with coil windings. The coil windings, also called stator windings, are responsible for generating a magnetic field when electric current passes through them. The magnetic field produced by the stator interacts with the permanent magnets on the rotor to induce rotation.
As used herein, the terms “wound core tooth”, “two-part stator tooth”, “two-part tooth”, and “tooth” are used interchangeably and refer to a component of the stator that generates and shapes the magnetic field and contributes to the motor’s performance. It is to be understood that multiple wound core teeth are arranged in a disc plane to form a segmented stator assembly. The two-part metallic core serves as a path for the magnetic flux within the stator of the motor providing a low reluctance path for the magnetic field generated by the stator windings, allowing efficient transfer of magnetic energy between the stator and rotor. It is to be understood that the design of the two-part stator tooth, including its shape and size may be optimized to provide a balance between magnetic efficiency, mechanical strength, and minimizing losses. The two-part stator tooth contributes to the overall performance, efficiency, and power density of the hybrid flux motor.
As used herein, the term “axial-field segment” refers to a segment of the two-part stator tooth that guides the magnetic flux in mutually opposite axial directions.
As used herein, the term “radial-field segment” refers to a segment of the two-part stator tooth that guides the magnetic flux in radial directions.
As used herein, the term “axial-field face” refers to a face of the axial-field segment of the two-part stator tooth that guides the magnetic flux in an axial direction.
As used herein, the term “outer face” refers to the face of the axial-field segment of the two-part stator tooth that is faced toward a motor casing. It is to be understood that the outer face is fixed on the motor casing and provides mechanical support to the stator assembly during the operation of the hybrid flux motor.
As used herein, the term “interlocking face” refers to a face of the axial-field segment of the two-part stator tooth that comprises a locking mechanism for securing the radial-field segment into the axial-field segment to form the two-part stator tooth.
As used herein, the term “radial-field face” refers to a face of the radial-field segment of the two-part stator tooth that guides the magnetic flux in a radial direction.
As used herein, the term “locking protrusion face” refers to a face of the radial-field segment of the two-part stator tooth that comprises a locking mechanism for securing the radial-field segment into the axial-field segment to form the two-part stator tooth.
As used herein, the term “side face” refers to a face of the radial-field segment that complements the axial-field face of the axial-field segment of the two-part stator tooth.
As used herein, the term “locking protrusion” refers to a protruding mechanical element present on the radial-field segment for locking into the corresponding recess present on the axial-field segment for preventing the relative motion between the radial-field segment and the axial-field segment.
As used herein, the term “locking groove” refers to a recessed cavity present on the axial-field segment for receiving the corresponding protruding element present on the radial-field segment for preventing the relative motion between the radial-field segment and the axial-field segment.
As used herein, the term “surface extensions” refers to an extended surface that functions similarly to the main surface from which it is extended. It is to be understood that the surface extensions in the two-part stator tooth guide the magnetic flux lines and reduce the magnetic flux leakage.
As used herein, the term “central yoke” refers to a central mechanical element that provides support to the flux coil and provides a path for the magnetic flux. It is to be understood that the flux coil is mounted on the central yoke in the slot formed around the central yoke.
As used herein, the term “tooth locking protrusion” refers to a protruding mechanical element present on one side of the central yoke for locking adjacent two-part stator teeth together forming stator assembly.
As used herein, the term “tooth locking groove” refers to a recessed cavity present on another side of the central yoke for locking adjacent two-part stator teeth together forming stator assembly. It is to be understood that the tooth locking groove receives the tooth locking protrusion.
Figure 1 illustrates an exploded view of a two-part stator tooth 100 for a hybrid flux motor. The two-part stator tooth 100 comprises an axial-field segment 102 and a radial-field segment 104. The axial-field segment 102 comprises a pair of mutually opposite axial-field faces 102a, 102b, an interlocking face 102c, and an outer face 102d. The radial-field segment 104 comprises a radial-field face 104a, a locking protrusion face 104b, and a pair of mutually opposite side faces 104c, 104d. The locking protrusion face 104b of the radial-field segment 104 and the interlocking face 102c of the axial-field segment 102 are locked together to form the two-part stator tooth 100.
The present disclosure provides a two-part stator tooth 100 capable of providing improved efficiency and power density in the hybrid flux motor. Advantageously, the two-part stator tooth 100 provides an easy-to-assemble and disassemble stator assembly for the hybrid flux motor. Furthermore, the two-part stator tooth 100 has lower non-flux weight i.e., low weight of components that are not generating any flux, resulting in increased power density and efficiency. Furthermore, the two-part stator tooth 100 is capable of directing hybrid magnetic flux, i.e., magnetic flux in both radial and axial directions. Beneficially, the two-part stator tooth 100 is capable of directing the magnetic flux in three directions comprising radially inward and mutually opposite axial directions. Advantageously, the two-part stator tooth 100 is cost-efficient in manufacturing and provides ease of servicing and maintenance for the stator assembly. Beneficially, the two-part stator tooth 100 enables efficient utilization of the space inside the hybrid flux motor resulting in compact size of the hybrid flux motor despite increased power density. Beneficially, the two-part stator tooth 100 is suitable for manufacturing hybrid flux motors used in high-power applications such as in the powertrain of electric vehicles. Beneficially, the two-part stator tooth 100 is advantageous in terms of reducing flux leakage and maximizing flux utilization resulting in higher power density and efficiency of the hybrid motor. Beneficially, the two-part stator tooth 100 is advantageous in terms of reducing vibrations in the stator assembly of the hybrid flux motor.
In an embodiment, the interlocking face 102c of the axial-field segment 102 comprises at least one locking groove 102e. In another embodiment, the interlocking face 102c of the axial-field segment 102 comprises a plurality of locking groove 102e. Beneficially, the at least one locking groove 102e is designed in conformity with a corresponding locking element such that the corresponding locking component snugly fits into the at least one locking groove 102e.
In an embodiment, the locking protrusion face 104b of the radial-field segment 104 comprises at least one locking protrusion 104e. In another embodiment, the locking protrusion face 104b of the radial-field segment 104 comprises a plurality of locking protrusion 104e. Beneficially, the at least one locking protrusion 104e is designed in conformity with a corresponding locking element such that the corresponding locking component snugly fits into the at least one locking protrusion 104e.
In an embodiment, the at least one locking protrusion 104e of the radial-field segment 104 is received and locked into the at least one locking groove 102e of the axial-field segment 102 to form the two-part stator tooth 100. Beneficially, the at least one locking protrusion 104e of the radial-field segment 104 snugly fits into the at least one locking groove 102e of the axial-field segment 102 to form the two-part stator tooth 100. Advantageously, such two-part design of the stator tooth 100 is easy to assemble and disassemble and results in ease of serviceability and maintenance of the stator assembly of the hybrid flux motor. It is to be understood that the number of locking protrusions 104e of the radial-field segment 104 is equal to the number of locking grooves 102e of the axial-field segment 102.
In an embodiment, the axial-field faces 102a, 102b of the axial-field segment 102 comprise surface extensions 102f extended along radial length of the axial-field faces 102a, 102b. Beneficially, the surface extensions 102f guides the magnetic flux in the mutually opposite axial directions.
In an embodiment, the surface extensions 102f of the axial-field faces 102a, 102b of the axial-field segment 102 reduce an air gap between adjacent two-part stator tooth 100 to prevent flux leakage. Beneficially, the reduced air gap between the adjacent two-part stator tooth 100 increases the utilization of magnetic flux resulting in increased efficiency of the hybrid motor.
In an embodiment, the side faces 104c, 104d of the radial-field segment 104 comprise surface extensions 104f extended along radial length of the side faces 104c, 104d. Beneficially, the surface extensions 104f extended along radial length of the side faces 104c, 104d guide the magnetic flux in the mutually opposite axial directions.
In an embodiment, the surface extensions 104f of the side faces 104c, 104d of the radial-field segment 104 complement the surface extensions 102f of the axial-field faces 102a, 102b of the axial-field segment 102 to reduce an air gap between the adjacent two-part stator tooth 100. Beneficially, the reduced air gap between the adjacent two-part stator tooth 100 increases the utilization of magnetic flux resulting in increased efficiency of the hybrid motor.
In an embodiment, the axial-field segment 102 of the stator tooth 100 comprises a central yoke 106 extending in mutually opposite direction along the radial length of the axial-field segment 102 of the stator tooth 100. Beneficially, the central yoke 106 concentrates and guides the magnetic flux lines inside the stator tooth 100. Advantageously, such design increases the efficiency of the hybrid flux motor. More beneficially, the central yoke 106 provides mechanical stability to the stator assembly of the hybrid flux motor.
In an embodiment, one side of the central yoke 106 comprises at least one tooth locking groove 106a along radial length of the central yoke 106 and another side of the central yoke 106 comprises at least one tooth locking protrusion 106b along the radial length of the central yoke 106. Beneficially, the at least one tooth locking groove 106a and the at least one tooth locking protrusion 106b are shaped in conformity with each other.
In an embodiment, the two-part stator tooth 100 is locked with the adjacent two-part stator tooth 100 by inserting the at least one tooth locking protrusion 106b of the two-part stator tooth 100 into the at least one tooth locking groove 106a of the adjacent two-part stator tooth 100. Beneficially, the at least one tooth locking protrusion 106b snugly fits into the at least one tooth locking groove 106a of adjacent two-part stator tooth 100. It is to be understood that multiple two-part stator tooth 100 are locked together to form the stator assembly of the hybrid flux motor.
In an embodiment, the adjacent two-part stator tooth 100 locked together forms a slot around the central yoke 106 to accommodate a flux coil 108. Beneficially, the central yoke 106 and the slot mechanically supports the flux coil 108. More beneficially, the central yoke 106 and the slot prevent the vibration of the flux coil 108 during the operation of the hybrid flux motor. It is to be understood that the flux coil 108 generates magnetic flux when an electric current flows through the flux coil 108.
In an embodiment, the two-part stator tooth 100 is made of soft magnetic composite material. In an alternative embodiment, the two-part stator tooth 100 is made of any suitable ferromagnetic material. Beneficially, the two-part stator tooth 100 made of soft magnetic composite material is lightweight.
Figure 2, in accordance with an embodiment, describes a perspective view of the two-part stator tooth 100 along with the flux coil 108. The flux coil 108 is accommodated in a slot around the central yoke 106.
In an embodiment, the two-part stator tooth 100 comprises an axial-field segment 102 and a radial-field segment 104. The axial-field segment 102 comprises a pair of mutually opposite axial-field faces 102a, 102b, an interlocking face 102c, and an outer face 102d. The radial-field segment 104 comprises a radial-field face 104a, a locking protrusion face 104b, and a pair of mutually opposite side faces 104c, 104d. The locking protrusion face 104b of the radial-field segment 104 and the interlocking face 102c of the axial-field segment 102 are locked together to form the two-part stator tooth 100. Furthermore, the interlocking face 102c of the axial-field segment 102 comprises at least one locking groove 102e. Furthermore, the locking protrusion face 104b of the radial-field segment 104 comprises at least one locking protrusion 104e. Furthermore, the at least one locking protrusion 104e of the radial-field segment 104 is received and locked into the at least one locking groove 102e of the axial-field segment 102 to form the two-part stator tooth 100. Furthermore, the axial-field faces 102a, 102b of the axial-field segment 102 comprise surface extensions 102f extended along radial length of the axial-field faces 102a, 102b. Furthermore, the surface extensions 102f of the axial-field faces 102a, 102b of the axial-field segment 102 reduce an air gap between adjacent two-part stator tooth 100 to prevent flux leakage. Furthermore, the side faces 104c, 104d of the radial-field segment 104 comprise surface extensions 104f extended along radial length of the side faces 104c, 104d. Furthermore, the surface extensions 104f of the side faces 104c, 104d of the radial-field segment 104 complement the surface extensions 102f of the axial-field faces 102a, 102b of the axial-field segment 102 to reduce an air gap between the adjacent two-part stator tooth 100. Furthermore, the axial-field segment 102 of the stator tooth 100 comprises a central yoke 106 extending in mutually opposite direction along the radial length of the axial-field segment 102 of the stator tooth 100. Furthermore, one side of the central yoke 106 comprises at least one tooth locking groove 106a along radial length of the central yoke 106 and another side of the central yoke 106 comprises at least one tooth locking protrusion 106b along the radial length of the central yoke 106. Furthermore, the two-part stator tooth 100 is locked with the adjacent two-part stator tooth 100 by inserting the at least one tooth locking protrusion 106b of the two-part stator tooth 100 into the at least one tooth locking groove 106a of the adjacent two-part stator tooth 100. Furthermore, the adjacent two-part stator tooth 100 locked together forms a slot around the central yoke 106 to accommodate a flux coil 108.
Figure 3, in accordance with an embodiment, describes an exploded view of stator assembly 200 for a hybrid flux motor comprises of a plurality of two-part stator teeth 100 locked together to form the stator assembly 200. Beneficially, the two-part stator teeth 100 are securely locked together to provide mechanical stability to the stator assembly 200.
It would be appreciated that all the explanations and embodiments of two-part stator tooth 100 also apply mutatis-mutandis to the stator assembly 200.
In the description of the present invention, it is also to be noted that, unless otherwise explicitly specified or limited, the terms “dispose of”, “mounted”, and “connected” are to be construed broadly, and may, for example, be fixedly connected, detachably connected, or integrally connected, either mechanically or electrically. They may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Modifications to embodiments and combinations of different embodiments of the present disclosure described in the foregoing are possible without departing from the scope of the present disclosure as defined by the accompanying claims. Expressions such as “including”, “comprising”, “incorporating”, “have”, and “is” used to describe and claim the present disclosure are intended to be construed in a non-exclusive manner, namely allowing for items, components or elements not explicitly described also to be present. Reference to the singular is also to be construed to relate to the plural where appropriate.
Although embodiments have been described with reference to a number of illustrative embodiments thereof, it should be understood that numerous other modifications and embodiments can be devised by those skilled in the art that will fall within the spirit and scope of the principles of this disclosure. More particularly, various variations and modifications are possible in the component parts and/or arrangements of the subject combination arrangement within the scope of the present disclosure, the drawings, and the appended claims. In addition to variations and modifications in the component parts and/or arrangements, alternative uses will also be apparent to those skilled in the art.

,CLAIMS:We Claim:
1. A two-part stator tooth (100) for a hybrid flux motor, wherein the two-part stator tooth (100) comprises:
- an axial-field segment (102) of the stator tooth (100), comprising a pair of mutually opposite axial-field faces (102a, 102b), an interlocking face (102c), and an outer face (102d); and
- a radial-field segment (104) of the stator tooth (100), comprising a radial-field face (104a), a locking protrusion face (104b), and a pair of mutually opposite side faces (104c, 104d),
wherein the locking protrusion face (104b) of the radial-field segment (104) and the interlocking face (102c) of the axial-field segment (102) are locked together to form the two-part stator tooth (100).
2. The two-part stator tooth (100) as claimed in claim 1, wherein the interlocking face (102c) of the axial-field segment (102) comprises at least one locking groove (102e).
3. The two-part stator tooth (100) as claimed in any of the claims 1 and 2, wherein the locking protrusion face (104b) of the radial-field segment (104) comprises at least one locking protrusion (104e).
4. The two-part stator tooth (100) as claimed in claims 1, 2 and 3, wherein the at least one locking protrusion (104e) of the radial-field segment (104) is received and locked into the at least one locking groove (102e) of the axial-field segment (102) to form the two-part stator tooth (100).
5. The two-part stator tooth (100) as claimed in claim 1, wherein the axial-field faces (102a, 102b) of the axial-field segment (102) comprise surface extensions (102f) extended along radial length of the axial-field faces (102a, 102b).
6. The two-part stator tooth (100) as claimed in claim 5, wherein the surface extensions (102f) of the axial-field faces (102a, 102b) of the axial-field segment (102) reduce an air gap between adjacent two-part stator tooth (100) to prevent flux leakage.
7. The two-part stator tooth (100) as claimed in claim 1, wherein the side faces (104c, 104d) of the radial-field segment (104) comprise surface extensions (104f) extended along radial length of the side faces (104c, 104d).
8. The two-part stator tooth (100) as claimed in claim 7, wherein the surface extensions (104f) of the side faces (104c, 104d) of the radial-field segment (104) complement the surface extensions (102f) of the axial-field faces (102a, 102b) of the axial-field segment (102) to reduce an air gap between the adjacent two-part stator tooth (100).
9. The two-part stator tooth (100) as claimed in claim 1, wherein the axial-field segment (102) of the stator tooth (100) comprises a central yoke (106) extending in mutually opposite direction along the radial length of the axial-field segment (102) of the stator tooth (100).
10. The two-part stator tooth (100) as claimed in claim 9, wherein one side of the central yoke (106) comprises at least one tooth locking groove (106a) along radial length of the central yoke (106) and another side of the central yoke (106) comprises at least one tooth locking protrusion (106b) along the radial length of the central yoke (106).
11. The two-part stator tooth (100) as claimed in claim 10, wherein the two-part stator tooth (100) is locked with the adjacent two-part stator tooth (100) by inserting the at least one tooth locking protrusion (106b) of the two-part stator tooth (100) into the at least one tooth locking groove (106a) of the adjacent two-part stator tooth (100).
12. The two-part stator tooth (100) as claimed in any of the claims 1 to 11, wherein the adjacent two-part stator tooth (100) locked together forms a slot around the central yoke (106) to accommodate a flux coil (108).
13. The two-part stator tooth (100) as claimed in any of the claims 1 to 12, wherein the two-part stator tooth (100) is made of soft magnetic composite material.
14. A stator assembly (200) for a hybrid flux motor, comprising a plurality of two-part stator teeth (100) as claimed in claim 1.
15. The stator assembly (200) as claimed in claim 14, wherein the plurality of two-part stator teeth (100) are locked together to form the stator assembly (200).