US20170104379A1 - Stator for synchronous motor - Google Patents
Stator for synchronous motor Download PDFInfo
- Publication number
- US20170104379A1 US20170104379A1 US15/384,596 US201615384596A US2017104379A1 US 20170104379 A1 US20170104379 A1 US 20170104379A1 US 201615384596 A US201615384596 A US 201615384596A US 2017104379 A1 US2017104379 A1 US 2017104379A1
- Authority
- US
- United States
- Prior art keywords
- slot
- slots
- drawing out
- armature coil
- phase
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
Links
Images
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/12—Stationary parts of the magnetic circuit
- H02K1/16—Stator cores with slots for windings
-
- 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
-
- 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
-
- 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
- H02K3/12—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors arranged in slots
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K3/00—Details of windings
- H02K3/46—Fastening of windings on the stator or rotor structure
- H02K3/48—Fastening of windings on the stator or rotor structure in slots
-
- 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
Definitions
- the present invention relates to a stator for a synchronous motor, and more particularly, to a stator for a synchronous motor, which is used as a power source for an electric vehicle and a hybrid vehicle.
- a synchronous motor that is a power source for hybrid and electric vehicles includes a stator, and a rotor.
- the stator is fixed to a periphery of the rotor.
- the rotor is rotated to output power of the synchronous motor to the exterior.
- stator transmits rotational force to the rotor to rotate the rotor.
- the rotor is formed in a cylindrical shape, and the stator is formed in a hollow cylindrical shape.
- the rotor is inserted into a hollow portion of the stator.
- Armature coils are disposed at the stator in a circumferential direction of the stator, and permanent magnets are disposed at the rotor in a circumferential direction of the rotor.
- the rotor is rotated as the permanent magnets are pushed in one direction by magnetic fields formed at the armature coils.
- functions of the synchronous motor may be changed based on configurations of the armature coils and the permanent magnets.
- a winding wire path of the armature coil provided at the stator configures a series circuit or a parallel circuit based on a design of the synchronous motor.
- a direction of the current, which flows along the winding wire path of the armature coil may be reversed to generate an alternating magnetic field by the stator.
- a type of winding of the armature coil includes a fractional pitch winding using a coil wherein the pitch between two sides thereof is shorter than one magnetic pole pitch, and a full pitch winding using a coil wherein the pitch between two sides thereof is the same to one magnetic pole pitch.
- in/out direction of the coil is set to generate the alternating magnetic field by a predetermined rule.
- the winding of the armature coil in which the in/out direction is set as described above may excessively raise resistance of a phase drawing out unit of the armature coil.
- resistance imbalance of the armature coil may be caused.
- the present invention provides a stator for a synchronous motor having an advantage of minimizing resistance of a phase drawing out unit of an armature coil and resistance imbalance of the armature coil.
- An exemplary embodiment of the present invention provides a stator for a synchronous motor, including: an armature coil configured to generate an N-pole and an S-pole by applying a current; and forty-eight slots radially formed at which the armature coil is disposed, wherein an N-pole and an S-pole are alternately disposed at each group of six slots among the forty-eight slots (e.g., four N-poles and four S-poles among the forty-eight slots) as the current is applied to the armature coil, the slot includes four phase drawing out slots, and when the order of the four phase drawing out slots is determined in a clockwise direction by setting one phase drawing out slot among the four phase drawing out slots as a first phase drawing out slot, a distance from the first phase drawing out slot to another phase drawing out slot is limited to thirteen by setting a cell between neighboring slots as a unit.
- an armature coil configured to generate an N-pole and an S-pole by applying a current
- forty-eight slots radially formed at which
- the forty-eight slots may be disposed in a clockwise direction in the order from No. 1 slot to No. 48 slot, and when the No. 1 slot is the first phase drawing out slot, No. 13 slot, No. 36 slot, and No. 48 slot may be the phase drawing out slots.
- the No. 5 slot is the first phase drawing out slot
- No. 17 slot, No. 40 slot, and No. 4 slot may be the phase drawing out slots.
- the No. 9 slot is the first phase drawing out slot
- No. 21 slot, No. 44 slot, and No. 8 slot may be the phase drawing out slots.
- the N-poles When the current is applied to the armature coil, the N-poles may be generated by arranging six slots among the forty-eight slots as a unit, and the S-poles may be generated by arranging the neighboring six slots as a unit, all of one winding method in which the armature coil may be wound to turn the armature coil sequentially around six slots, in which the N-poles may be generated, in a clockwise direction, and then sequentially turn the armature coil around the other six slots, in which the S-poles may be generated, in a counterclockwise direction, and the other winding method in which the armature coil may be wound to turn the armature sequentially coil around six slots, in which the S-poles may be generated, in a counterclockwise direction, and then sequentially turn around the other six slots, in which the N-poles may be generated, in a clockwise direction, may be used.
- the two winding methods may be symmetrically used to set a distance from the first phase drawing out slot to a fourth phase drawing out slot to be 1 by setting the first phase drawing out slot and the fourth phase drawing out slot as a starting point.
- a stator for a synchronous motor including: an armature coil configured to generate an N-pole and an S-pole by applying a current; and forty-eight slots radially formed at which the armature coil is disposed and of which the number of slots is in multiples of twelve, in which the armature coil may alternately implements N-poles and S-poles by arranging a group of six slots as a single unit as the current is applied to the armature coil, the slot may include a plurality of phase drawing out slots, and when the order of the plurality of phase drawing out slots is determined in a clockwise direction by setting one phase drawing out slot of the plurality of phase drawing out slots as a first phase drawing out slot, at least two methods of winding the armature coil to turn around the slot may be used to set a distance from the first phase drawing out slot to the last phase drawing out slot to a minimum value by arranging a cell between neighboring slots as a unit.
- the at least two winding methods may be winding methods of turning around twelve slots including the N-pole and the S-pole one by one, and may include one method in which the armature coil may be wound to turn the armature coil sequentially around six slots, in which the N-poles may be generated, in a clockwise direction, and then sequentially turn around the other six slots, in which the S-poles may be generated, in a counterclockwise direction, and a second method in which the armature coil may be wound to turn the armature coil sequentially around six slots, in which the S-poles may be generated, in a counterclockwise direction, and then sequentially turn around the other six slots, in which the N-poles may be generated, in a clockwise direction.
- the at least two winding methods may be winding methods of turning around twelve slots including the N-pole and the S-pole one by one, the slots may be determined in a sequential order from No. 1 slot to the last numbered slot in a clockwise direction, and when the number of slots is an even multiple of twelve, one method may be used from No. 1 slot to the slot having half the number of slots, and the other method may be used from the next slot of the slot having half the number of slots to the last numbered slot.
- the at least two winding methods may be winding methods of turning around twelve slots including the N-pole and the S-pole one by one, the slots may be determined in a sequential order from No. 1 slot to the last numbered slot in a clockwise direction, and when the number of slots is an odd multiple of twelve, one method may be used from No. 1 slot to the slot numbered by (the number of the slots/2)+6, and the other method may be used from the slot numbered by (the number of the slots/2)+7 to the last numbered slot.
- FIG. 1 is an exemplary view illustrating an aspect in which a C-phase alternating magnetic field is generated at a stator for a synchronous motor according to an exemplary embodiment of the present invention
- FIG. 2 is an exemplary view illustrating an aspect in which a B-phase alternating magnetic field is generated at a stator for a synchronous motor according to an exemplary embodiment of the present invention
- FIG. 3 is an exemplary view illustrating an aspect in which an A-phase alternating magnetic field is generated at a stator for a synchronous motor according to an exemplary embodiment of the present invention
- FIG. 4 is an exemplary view illustrating a winding wire path of an armature coil according to an exemplary embodiment of the present invention
- FIG. 5 is an exemplary view illustrating a winding wire path of an armature coil according to another exemplary embodiment of the present invention.
- FIG. 6 is an exemplary view illustrating a method of drawing out a stator for a synchronous motor according to an exemplary embodiment of the present invention.
- FIG. 7 is an exemplary view illustrating a phase drawing out slot and a phase drawing out distance of a stator for a synchronous motor according to an exemplary embodiment of the present invention.
- vehicle or “vehicular” or other similar term as used herein is inclusive of motor vehicles in general such as passenger automobiles including sports utility vehicles (SUV), buses, trucks, various commercial vehicles, watercraft including a variety of boats and ships, aircraft, and the like, and includes hybrid vehicles, electric vehicles, plug-in hybrid electric vehicles, fuel cell vehicles, hydrogen-powered vehicles and other alternative fuel vehicles (e.g. fuels derived from resources other than petroleum).
- a hybrid vehicle is a vehicle that has two or more sources of power, for example both gasoline-powered and electric-powered vehicles.
- FIG. 1 is an exemplary view illustrating an aspect in which a C-phase alternating magnetic field is generated at a stator for a synchronous motor according to an exemplary embodiment of the present invention
- FIG. 2 is an exemplary view illustrating an aspect in which a B-phase alternating magnetic field is generated at a stator for a synchronous motor according to an exemplary embodiment of the present invention
- FIG. 3 is an exemplary view illustrating an aspect in which an A-phase alternating magnetic field is generated at a stator for a synchronous motor according to an exemplary embodiment of the present invention.
- a stator 100 for a synchronous motor may include a plurality of slots of the number of magnetic poles multiplied by the number of phases.
- the stator 100 for a synchronous motor which is illustrated in FIGS. 1 to 3 , implements eight magnetic poles, an A phase, a B phase, and a C phase.
- the eight-pole three-phase stator 100 may include the slots in multiples of twenty-four, and FIGS. 1 to 3 illustrate the stator 100 including forty-eight slots 1 to 48 .
- the number of magnetic poles may be an even number and thus the number of N-poles may be the same as the number of S-poles, and may be variously changed by the person skilled in the art.
- a ten-pole three-phase stator 100 may include slots in multiples of thirty. However, when six slots form one magnetic pole, the stator 100 may include slots in multiples of twelve.
- Armature coils 110 may be disposed at the forty-eight slots 1 to 48 , respectively. Moreover, each of the armature coils 110 which are disposed at the forty-eight slots 1 to 48 may be wound to be connected to each other.
- the stator 100 for the synchronous motor may be formed in a hollow cylindrical shape, and a rotor (not illustrated) may be disposed in a hollow portion of the stator 100 .
- the configuration of the synchronous motor is apparent to the person skilled in the art, and therefore a more detailed description will be omitted.
- the forty-eight slots 1 to 48 may be radially formed from the hollow portion of the stator 100 .
- each shape of the forty-eight slots 1 to 48 may be the same as each other.
- the A phase, the B phase, and the C phase mean three phases in which positions of the N-poles and the S-poles of the armature coils 110 , which became electromagnets, may be different from each other as currents flow to the armature coil 110 via different paths.
- the rotor may be rotated.
- the N-poles may be generated from No. 1 slot 1 to No. 6 slot 6
- the S-poles are generated from No. 7 slot 7 to No. 12 slot 12
- the N-poles and the S-poles are alternately generated from No. 13 slot 13 to No. 48 slot 48 .
- directions of currents, which flow through the armature coil 110 are opposite to each other in the slot in which the N-pole is generated and the slot in which the S-pole is generated. That is, Winding wire paths of the armature coil 110 are opposite to each other in the slot in which the N-pole is generated and the slot in which the S-pole is generated.
- a winding wire path of the armature coil 110 when a Winding wire path of the armature coil 110 is formed in a counterclockwise direction by setting slot No. 1 to slot No. 6 as a single unit, a winding wire path of the armature coil 110 may be formed in a clockwise direction by setting slot No. 7 to slot No. 12 as a single unit.
- the N-poles may be generated from slot No. 5 to slot No. 10
- the S-poles may be generated from slot No. 11 to slot No. 16
- the N-poles and the S-poles may be alternately generated from slot No. 17 to slot No. 4
- directions of currents, which flow through the armature coil 110 may be opposite to each other in the slot in which the N-pole is generated and the slot in which the S-pole is generated.
- winding wire paths of the armature coil 110 may be opposite to each other in the slot in which the N-pole is generated and the slot in which the S-pole is generated.
- a winding wire path of the armature coil 110 when a winding wire path of the armature coil 110 is formed in a counterclockwise direction by setting slot No. 5 to slot No. 10 as a single unit, a winding wire path of the armature coil 110 may be formed in a clockwise direction by arranging slot No. 11 to slot No. 16 as a single unit.
- the N-poles may be generated from slot No. 9 to slot No. 14
- the S-poles may be generated from slot No. 15 to slot No. 20
- the N-poles and the S-poles may be alternately generated from slot No. 21 to slot No. 8
- directions of currents, which flow through the armature coil 110 may be opposite to each other in the slot in which the N-pole is generated and the slot in which the S-pole is generated.
- winding wire paths of the armature coil 110 may be opposite to each other in the slot in which the N-pole is generated and the slot in which the S-pole is generated.
- a winding wire path of the armature coil 110 when a winding wire path of the armature coil 110 is formed in a counterclockwise direction by setting slot No. 9 to slot No. 14 as a single unit, a winding wire path of the armature coil 110 may be formed in a clockwise direction by setting slot No. 15 to slot No. 20 as a single unit.
- FIGS. 1 to 3 arrows of the N-poles and the S-poles indicate directions of force applied to the rotor by attractive force and repulsive force formed at the N-poles and the S-poles.
- FIG. 4 is an exemplary view illustrating a winding wire path of an armature coil according to an exemplary embodiment of the present invention
- FIG. 5 is an exemplary view illustrating a winding wire path of an armature coil according to another exemplary embodiment of the present invention.
- the armature coil 110 may include a phase drawing out unit 112 , and a neutral point wire connection portion 114 .
- the winding wire paths of the armature coil 110 may be opposite to each other in slots in which poles different from each other are generated.
- the arrow of FIG. 4 indicates a direction in which the armature coil 110 is wound.
- the phase drawing out unit 112 is a portion where the A phase, the B phase, or the C phase may be drawn out.
- the phase drawing out unit 112 is a slot which may be a starting point of six slots arranged to be a single unit.
- the neutral point wire connection portion 114 is a portion where the three phases including the A phase, the B phase, and the C phase may be accessed in common In other words, the neutral point wire connection portion 114 is a portion where the armature coil 110 , which is wound to implement the A phase, the B phase, and the C phase, may be connected by wire.
- Slot 1 and Slot 2 may be the slots which may be a starting point and an end point of six slots arranged to be a single unit.
- Slot 1 when Slot 1 is slot No. 1 , Slot 2 may be slot No. 6 , when Slot 1 is slot No. 5 , Slot 2 may be slot No. 10 , and when Slot 1 is slot No. 9 , Slot 2 may be slot No. 14 .
- Slot 3 and Slot 4 may be the slots which may be a starting point and an end point of six slots arranged to be a single unit, and Slot 3 may be a slot that is a neighboring slot to Slot 2 . For example, when Slot 2 is slot No. 6 , Slot 3 is slot No. 7 , and Slot 4 is slot No. 12 .
- armature coil 110 is wound to sequentially pass through Slot 1 , Slot 2 , Slot 4 and Slot 3 , a direction of the armature coil 110 wound at Slot 1 and Slot 2 and a direction of the armature coil 110 wound at Slot 4 and Slot 3 may be opposite to each other.
- Slot 1 may be a phase drawing out slot where the phase drawing out unit 112 is disposed
- Slot 3 may be a neutral point slot where the neutral point wire connection portion 114 is disposed.
- Slot 5 and Slot 6 may be the slots which may be a starting point and an end point of six slots arranged to be a single unit.
- Slot 6 may be slot No. 42
- Slot 5 is slot No. 41
- Slot 6 may be slot No. 46
- Slot 5 is slot No. 45
- Slot 6 may be slot No. 2 .
- Slot 7 and Slot 8 may be the slots which may be a starting point and an end point of six slots arranged to be a single unit, and
- Slot 7 may be a slot that is a neighboring slot to Slot 6 .
- Slot 6 is slot No. 42
- Slot 7 is slot No. 43
- Slot 8 is slot No. 48 .
- armature coil 110 is wound to sequentially pass through Slot 8 , Slot 7 , Slot 5 and Slot 6 , a direction of the armature coil 110 wound at Slot 8 and Slot 7 and a direction of the armature coil 110 wound at Slot 5 and Slot 6 may be opposite to each other.
- Slot 8 may be a phase drawing out slot where the phase drawing out unit 112 is disposed, and Slot 6 may be a neutral point slot where the neutral point wire connection portion 114 is disposed.
- a method in which the armature coil 110 sequentially passes through Slot 1 , Slot 2 , Slot 4 , and Slot 3 may be a winding method in which the armature coil may be wound to sequentially turn the armature coil around six slots, in which the N-poles may be generated, in a clockwise direction, and then sequentially turn around the other six slots, in which the S-poles may be generated, in a counterclockwise direction.
- a method in which the armature coil 110 sequentially passes through Slot 8 , Slot 7 , Slot 5 , and Slot 6 may be a winding method in which the armature coil may be wound to sequentially turn the armature coil around six slots, in which the S-poles may be generated, in a counterclockwise direction, and then sequentially turn around the other six slots, in which the N-poles may be generated, in a clockwise direction.
- the two winding methods may be winding methods that turn the armature coil 110 around twelve slots including the N-pole and the S-pole one by one.
- the slots may be determined in a sequential order from No. 1 slot to the last numbered slot in a clockwise direction of a circumference of the stator 100 .
- the method which sequentially passes through Slot 1 , Slot 2 , Slot 4 and Slot 3 , may be used from No. 1 slot to the slot having half the number of slots, and the method, which sequentially passes through Slot 8 , Slot 7 , Slot 5 , and Slot 6 , may be used from the next slot of the slot having half the number of slots to the last numbered slot.
- the method which sequentially passes through Slot 1 , Slot 2 , Slot 4 and Slot 3 , may be used from No.
- FIG. 6 is an exemplary view illustrating a method of drawing out a stator for a synchronous motor according to an exemplary embodiment of the present invention.
- methods of drawing out the stator 100 at the C phase, the B phase, and the A phase are sequentially illustrated from top to bottom in FIG. 6 .
- the stator 100 which implements the C phase, may include four phase drawing out slots C 1 , C 2 , C 3 and C 4 , and four neutral point slots Nc 1 , Nc 2 , Nc 3 , and Nc 4 .
- the armature coil 110 which may be disposed at the slot Nos. 1 to 12
- the armature coil 110 which may be disposed at the slot Nos. 13 to 24
- slot No. 1 and slot No. 13 may be the phase drawing out slots C 1 and C 2
- slot No. 7 and slot No. 19 may be the neutral point slots Nc 1 and Nc 2 .
- the armature coil 110 which may be disposed at the slot Nos. 25 to 36
- the armature coil 110 which may be disposed at the slot Nos. 37 to 48
- slot No. 36 and slot No. 48 may be phase drawing out slots C 3 and C 4
- slot No. 30 and slot No. 42 may be the neutral point slots Nc 3 and Nc 4 .
- the stator 100 which implements the B phase, may include four phase drawing out slots B 1 , B 2 , B 3 and B 4 , and four neutral point slots Nb 1 , Nb 2 , Nb 3 , and Nb 4 .
- the armature coil 110 which may be disposed at the slot Nos. 5 to 16
- the armature coil 110 which may be disposed at the slot Nos. 17 to 28
- slot No. 11 and slot No. 23 may be the neutral point slots Nb 4 and Nb 1 .
- the armature coil 110 which may be disposed at the slot Nos. 29 to 40
- the armature coil 110 which may be disposed at the slot Nos. 41 to 4
- slot No. 40 and slot No. 4 may be the phase drawing out slots B 2 and B 3
- slot No. 34 and slot No. 46 may be the neutral point slots Nb 2 and Nb 3 .
- the stator 100 which implements the A phase, may include four phase drawing out slots A 1 , A 2 , A 3 , and A 4 , and four neutral point slots Na 1 , Na 2 , Na 3 , and Na 4 .
- the armature coil 110 which may be disposed at the slot Nos. 9 to 20
- the armature coil 110 which may be disposed at the slot Nos. 21 to 32
- slot No. 15 and slot No. 27 may be the neutral point slots Na 2 and Na 3 .
- the armature coil 110 which may be disposed at the slot Nos. 33 to 44
- the armature coil 110 which may be disposed at the slot Nos. 45 to 8
- slot No. 44 and slot No. 8 may be the phase drawing out slots A 4 and A 1
- slot No. 38 and slot No. 2 may be the neutral point slots Na 4 and Na 1 .
- FIG. 7 is an exemplary view illustrating a phase drawing out slot and a phase drawing out distance of a stator for a synchronous motor according to an exemplary embodiment of the present invention.
- the phase drawing out slots C 1 , C 2 , C 3 , and C 4 of the C phase may be slot Nos. 1 , 13 , 36 , and 48 .
- the phase drawing out distance may refer to a distance from a first phase drawing out slot C 1 to each of the phase drawing out slots C 1 , C 2 , C 3 , and C 4 .
- a unit of the phase drawing out distance may be one cell that is based on one slot and another neighboring slot.
- a distance from slot No. 1 , which is the first phase drawing out slot C 1 , to slot No. 1 , which is the first phase drawing out slot C 1 may be zero.
- a distance from slot No. 1 , which is the first phase drawing out slot C 1 , to slot No. 13 , which is a second phase drawing out slot C 2 may be twelve in a clockwise direction.
- a distance from slot No. 1 , which is the first phase drawing out slot C 1 , to slot No. 36 , which is a third phase drawing out slot C 3 may be thirteen in a counterclockwise direction.
- a distance from slot No. 1 , which is the first phase drawing out slot C 1 , to slot No. 48 which is a fourth phase drawing out slot C 4 , may be one in a counterclockwise direction.
- the phase drawing out slots B 1 , B 2 , B 3 , and B 4 of the B phase may be slot Nos. 17 , 40 , 4 , and 5 .
- the phase drawing out distance may refer to a distance from a first phase drawing out slot B 4 to each of the phase drawing out slots B 4 , B 1 , B 2 , and B 3 .
- a unit of the phase drawing out distance may be one cell that is based on one slot and another neighboring slot.
- a distance from slot No. 5 , which is the first phase drawing out slot B 4 , to slot No. 5 , which is the first phase drawing out slot B 4 may be zero.
- a distance from slot No. 5 , which is the first phase drawing out slot B 4 , to slot No. 17 , which is a second phase drawing out slot B 1 may be twelve in a clockwise direction.
- a distance from slot No. 5 , which is the first phase drawing out slot B 4 , to slot No. 40 which is a third phase drawing out slot B 2
- a distance from slot No. 5 , which is the first phase drawing out slot B 4 , to the slot No 4 , which is a fourth phase drawing out slot B 3 may be one in a counterclockwise direction.
- the phase drawing out slots A 1 , A 2 , A 3 , and A 4 of the A phase may be slot Nos. 8 , 9 , 21 , and 44 .
- the phase drawing out distance may refer to a distance from a first phase drawing out slot A 2 to each of the phase drawing out slots A 2 , A 3 , A 4 , and A 1 .
- a unit of the phase drawing out distance may be one cell that is based on one slot and another neighboring slot.
- a distance from slot No. 9 , which is the first phase drawing out slot A 2 , to slot No. 9 , which is the first phase drawing out slot A 2 may be zero.
- a distance from slot No. 9 , which is the first phase drawing out slot A 2 , to slot No. 21 , which is a second phase drawing out slot A 3 may be twelve in a clockwise direction.
- a distance from slot No. 9 , which is the first phase drawing out slot A 2 , to slot No. 44 , which is a third phase drawing out slot A 4 may be thirteen in a counterclockwise direction.
- a distance from slot No. 9 , which is the first phase drawing out slot A 2 , to slot No. 8 , which is a fourth phase drawing out slot A 1 may be one in a counterclockwise direction.
- all the phase drawing out distances by the armature coil 110 wound according to the exemplary embodiment and another exemplary embodiment of the present invention may be equal to or less than thirteen.
- resistance of the armature coil 110 may be reduced, and resistance imbalance of the armature coil 110 may be improved, by minimizing the drawing out distance which is a distance between the phase drawing out units 112 of the armature coil 110 . Therefore, performance of the synchronous motor may be improved. In addition, a length of the armature coil 110 may be shortened. Therefore, material costs of the stator 100 may be reduced.
Abstract
A stator for a motor that includes an armature coil that generates an N-pole and an S-pole by applying a current and forty-eight slots radially formed at which the coil is disposed and in which the armature coil alternately implements N-poles and S-poles by arranging six slots as a single unit as the current is applied to the coil. The slot includes a plurality of phase drawing out slots, and when the order of the phase drawing out slots is determined in a clockwise direction by setting one phase drawing out slot as a first phase drawing out slot, at least two methods of winding the armature coil to turn around the slot may be used to decrease a distance from the first phase drawing out slot to the last phase drawing out slot to a minimum value by setting a cell between neighboring slots as a unit.
Description
- This application claims priority to and the benefit of Korean Patent Application No. 10-2012-0158608 filed in the Korean Intellectual Property Office on Dec. 31, 2012, the entire contents of which are incorporated herein by reference.
- (a) Field of the Invention
- The present invention relates to a stator for a synchronous motor, and more particularly, to a stator for a synchronous motor, which is used as a power source for an electric vehicle and a hybrid vehicle.
- (b) Description of the Related Art
- In general, a synchronous motor that is a power source for hybrid and electric vehicles includes a stator, and a rotor. The stator is fixed to a periphery of the rotor. In addition, the rotor is rotated to output power of the synchronous motor to the exterior.
- Moreover, the stator transmits rotational force to the rotor to rotate the rotor. The rotor is formed in a cylindrical shape, and the stator is formed in a hollow cylindrical shape. In addition, the rotor is inserted into a hollow portion of the stator.
- Armature coils are disposed at the stator in a circumferential direction of the stator, and permanent magnets are disposed at the rotor in a circumferential direction of the rotor. In addition, the rotor is rotated as the permanent magnets are pushed in one direction by magnetic fields formed at the armature coils. Moreover, functions of the synchronous motor may be changed based on configurations of the armature coils and the permanent magnets.
- When a current is applied to the armature coils, the armature coils become electromagnets. Therefore, torque of the synchronous motor is produced by attractive force and repulsive force between the armature coils and the permanent magnets by north (N) poles and south (S) poles of the armature coils, which became electromagnets, and the permanent magnets.
- A winding wire path of the armature coil provided at the stator configures a series circuit or a parallel circuit based on a design of the synchronous motor. In addition, a direction of the current, which flows along the winding wire path of the armature coil, may be reversed to generate an alternating magnetic field by the stator. Meanwhile, a type of winding of the armature coil includes a fractional pitch winding using a coil wherein the pitch between two sides thereof is shorter than one magnetic pole pitch, and a full pitch winding using a coil wherein the pitch between two sides thereof is the same to one magnetic pole pitch. In the winding of the armature coil of the related art, in/out direction of the coil is set to generate the alternating magnetic field by a predetermined rule.
- However, the winding of the armature coil in which the in/out direction is set as described above may excessively raise resistance of a phase drawing out unit of the armature coil. In addition, resistance imbalance of the armature coil may be caused.
- The above information disclosed in this section is only for enhancement of understanding of the background of the invention and therefore it may contain information that does not form the prior art that is already known in this country to a person of ordinary skill in the art.
- The present invention provides a stator for a synchronous motor having an advantage of minimizing resistance of a phase drawing out unit of an armature coil and resistance imbalance of the armature coil.
- An exemplary embodiment of the present invention provides a stator for a synchronous motor, including: an armature coil configured to generate an N-pole and an S-pole by applying a current; and forty-eight slots radially formed at which the armature coil is disposed, wherein an N-pole and an S-pole are alternately disposed at each group of six slots among the forty-eight slots (e.g., four N-poles and four S-poles among the forty-eight slots) as the current is applied to the armature coil, the slot includes four phase drawing out slots, and when the order of the four phase drawing out slots is determined in a clockwise direction by setting one phase drawing out slot among the four phase drawing out slots as a first phase drawing out slot, a distance from the first phase drawing out slot to another phase drawing out slot is limited to thirteen by setting a cell between neighboring slots as a unit.
- The forty-eight slots may be disposed in a clockwise direction in the order from No. 1 slot to No. 48 slot, and when the No. 1 slot is the first phase drawing out slot, No. 13 slot, No. 36 slot, and No. 48 slot may be the phase drawing out slots. In addition, when the No. 5 slot is the first phase drawing out slot, No. 17 slot, No. 40 slot, and No. 4 slot may be the phase drawing out slots. When the No. 9 slot is the first phase drawing out slot, No. 21 slot, No. 44 slot, and No. 8 slot may be the phase drawing out slots.
- When the current is applied to the armature coil, the N-poles may be generated by arranging six slots among the forty-eight slots as a unit, and the S-poles may be generated by arranging the neighboring six slots as a unit, all of one winding method in which the armature coil may be wound to turn the armature coil sequentially around six slots, in which the N-poles may be generated, in a clockwise direction, and then sequentially turn the armature coil around the other six slots, in which the S-poles may be generated, in a counterclockwise direction, and the other winding method in which the armature coil may be wound to turn the armature sequentially coil around six slots, in which the S-poles may be generated, in a counterclockwise direction, and then sequentially turn around the other six slots, in which the N-poles may be generated, in a clockwise direction, may be used.
- The two winding methods may be symmetrically used to set a distance from the first phase drawing out slot to a fourth phase drawing out slot to be 1 by setting the first phase drawing out slot and the fourth phase drawing out slot as a starting point.
- Another exemplary embodiment of the present invention provides a stator for a synchronous motor including: an armature coil configured to generate an N-pole and an S-pole by applying a current; and forty-eight slots radially formed at which the armature coil is disposed and of which the number of slots is in multiples of twelve, in which the armature coil may alternately implements N-poles and S-poles by arranging a group of six slots as a single unit as the current is applied to the armature coil, the slot may include a plurality of phase drawing out slots, and when the order of the plurality of phase drawing out slots is determined in a clockwise direction by setting one phase drawing out slot of the plurality of phase drawing out slots as a first phase drawing out slot, at least two methods of winding the armature coil to turn around the slot may be used to set a distance from the first phase drawing out slot to the last phase drawing out slot to a minimum value by arranging a cell between neighboring slots as a unit. The number of the plurality of phase drawing out slots may be the number of the slots divided by twelve.
- The at least two winding methods may be winding methods of turning around twelve slots including the N-pole and the S-pole one by one, and may include one method in which the armature coil may be wound to turn the armature coil sequentially around six slots, in which the N-poles may be generated, in a clockwise direction, and then sequentially turn around the other six slots, in which the S-poles may be generated, in a counterclockwise direction, and a second method in which the armature coil may be wound to turn the armature coil sequentially around six slots, in which the S-poles may be generated, in a counterclockwise direction, and then sequentially turn around the other six slots, in which the N-poles may be generated, in a clockwise direction.
- The at least two winding methods may be winding methods of turning around twelve slots including the N-pole and the S-pole one by one, the slots may be determined in a sequential order from No. 1 slot to the last numbered slot in a clockwise direction, and when the number of slots is an even multiple of twelve, one method may be used from No. 1 slot to the slot having half the number of slots, and the other method may be used from the next slot of the slot having half the number of slots to the last numbered slot.
- The at least two winding methods may be winding methods of turning around twelve slots including the N-pole and the S-pole one by one, the slots may be determined in a sequential order from No. 1 slot to the last numbered slot in a clockwise direction, and when the number of slots is an odd multiple of twelve, one method may be used from No. 1 slot to the slot numbered by (the number of the slots/2)+6, and the other method may be used from the slot numbered by (the number of the slots/2)+7 to the last numbered slot.
-
FIG. 1 is an exemplary view illustrating an aspect in which a C-phase alternating magnetic field is generated at a stator for a synchronous motor according to an exemplary embodiment of the present invention; -
FIG. 2 is an exemplary view illustrating an aspect in which a B-phase alternating magnetic field is generated at a stator for a synchronous motor according to an exemplary embodiment of the present invention; -
FIG. 3 is an exemplary view illustrating an aspect in which an A-phase alternating magnetic field is generated at a stator for a synchronous motor according to an exemplary embodiment of the present invention; -
FIG. 4 is an exemplary view illustrating a winding wire path of an armature coil according to an exemplary embodiment of the present invention; -
FIG. 5 is an exemplary view illustrating a winding wire path of an armature coil according to another exemplary embodiment of the present invention; -
FIG. 6 is an exemplary view illustrating a method of drawing out a stator for a synchronous motor according to an exemplary embodiment of the present invention; and -
FIG. 7 is an exemplary view illustrating a phase drawing out slot and a phase drawing out distance of a stator for a synchronous motor according to an exemplary embodiment of the present invention. -
-
1-48: Slot 100: Stator 110: Armature coil 112: Phase drawing out unit 114: Neutral point wire connection portion - It is understood that the term “vehicle” or “vehicular” or other similar term as used herein is inclusive of motor vehicles in general such as passenger automobiles including sports utility vehicles (SUV), buses, trucks, various commercial vehicles, watercraft including a variety of boats and ships, aircraft, and the like, and includes hybrid vehicles, electric vehicles, plug-in hybrid electric vehicles, fuel cell vehicles, hydrogen-powered vehicles and other alternative fuel vehicles (e.g. fuels derived from resources other than petroleum). As referred to herein, a hybrid vehicle is a vehicle that has two or more sources of power, for example both gasoline-powered and electric-powered vehicles.
- The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the singular forms “a”, “an” and “the” are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms “comprises” and/or “comprising,” when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof. As used herein, the term “and/or” includes any and all combinations of one or more of the associated listed items.
- An exemplary embodiment of the present invention will hereinafter be described in detail with reference to the accompanying drawings.
-
FIG. 1 is an exemplary view illustrating an aspect in which a C-phase alternating magnetic field is generated at a stator for a synchronous motor according to an exemplary embodiment of the present invention,FIG. 2 is an exemplary view illustrating an aspect in which a B-phase alternating magnetic field is generated at a stator for a synchronous motor according to an exemplary embodiment of the present invention, andFIG. 3 is an exemplary view illustrating an aspect in which an A-phase alternating magnetic field is generated at a stator for a synchronous motor according to an exemplary embodiment of the present invention. - As illustrated in
FIGS. 1 to 3 , astator 100 for a synchronous motor may include a plurality of slots of the number of magnetic poles multiplied by the number of phases. Thestator 100 for a synchronous motor, which is illustrated inFIGS. 1 to 3 , implements eight magnetic poles, an A phase, a B phase, and a C phase. The eight-pole three-phase stator 100 may include the slots in multiples of twenty-four, andFIGS. 1 to 3 illustrate thestator 100 including forty-eightslots 1 to 48. Meanwhile, the number of magnetic poles may be an even number and thus the number of N-poles may be the same as the number of S-poles, and may be variously changed by the person skilled in the art. For example, a ten-pole three-phase stator 100 may include slots in multiples of thirty. However, when six slots form one magnetic pole, thestator 100 may include slots in multiples of twelve. - Hereinafter, an exemplary embodiment of the present invention will be described based on the eight-pole three-
phase stator 100 having the forty-eight slots. -
Armature coils 110 may be disposed at the forty-eightslots 1 to 48, respectively. Moreover, each of thearmature coils 110 which are disposed at the forty-eightslots 1 to 48 may be wound to be connected to each other. Thestator 100 for the synchronous motor may be formed in a hollow cylindrical shape, and a rotor (not illustrated) may be disposed in a hollow portion of thestator 100. The configuration of the synchronous motor is apparent to the person skilled in the art, and therefore a more detailed description will be omitted. - The forty-eight
slots 1 to 48 may be radially formed from the hollow portion of thestator 100. In addition, each shape of the forty-eightslots 1 to 48 may be the same as each other. The A phase, the B phase, and the C phase mean three phases in which positions of the N-poles and the S-poles of the armature coils 110, which became electromagnets, may be different from each other as currents flow to thearmature coil 110 via different paths. In addition, as the A phase, the B phase, and the C phase are alternately implemented, the rotor may be rotated. - In the C phase of
FIG. 1 , the N-poles may be generated from No. 1slot 1 to No. 6slot 6, and the S-poles are generated from No. 7slot 7 to No. 12slot 12. In addition, as six slots become a single unit in the same method, the N-poles and the S-poles are alternately generated from No. 13slot 13 to No. 48slot 48. Moreover, directions of currents, which flow through thearmature coil 110, are opposite to each other in the slot in which the N-pole is generated and the slot in which the S-pole is generated. That is, Winding wire paths of thearmature coil 110 are opposite to each other in the slot in which the N-pole is generated and the slot in which the S-pole is generated. For example, when a Winding wire path of thearmature coil 110 is formed in a counterclockwise direction by setting slot No. 1 to slot No. 6 as a single unit, a winding wire path of thearmature coil 110 may be formed in a clockwise direction by setting slot No. 7 to slot No. 12 as a single unit. - In the B phase of
FIG. 2 , the N-poles may be generated from slot No. 5 to slot No. 10, and the S-poles may be generated from slot No. 11 to slot No. 16. In addition, as six slots are arranged a single unit in the same method, the N-poles and the S-poles may be alternately generated from slot No. 17 to slot No. 4. Moreover, directions of currents, which flow through thearmature coil 110, may be opposite to each other in the slot in which the N-pole is generated and the slot in which the S-pole is generated. In other words, winding wire paths of thearmature coil 110 may be opposite to each other in the slot in which the N-pole is generated and the slot in which the S-pole is generated. For example, when a winding wire path of thearmature coil 110 is formed in a counterclockwise direction by setting slot No. 5 to slot No. 10 as a single unit, a winding wire path of thearmature coil 110 may be formed in a clockwise direction by arranging slot No. 11 to slot No. 16 as a single unit. - In the A phase of
FIG. 3 , the N-poles may be generated from slot No. 9 to slot No. 14, and the S-poles may be generated from slot No. 15 to slot No. 20. In addition, as six slots are arranged as a single unit in the same method, the N-poles and the S-poles may be alternately generated from slot No. 21 to slot No. 8. Moreover, directions of currents, which flow through thearmature coil 110, may be opposite to each other in the slot in which the N-pole is generated and the slot in which the S-pole is generated. In other words, winding wire paths of thearmature coil 110 may be opposite to each other in the slot in which the N-pole is generated and the slot in which the S-pole is generated. For example, when a winding wire path of thearmature coil 110 is formed in a counterclockwise direction by setting slot No. 9 to slot No. 14 as a single unit, a winding wire path of thearmature coil 110 may be formed in a clockwise direction by setting slot No. 15 to slot No. 20 as a single unit. - Moreover, in
FIGS. 1 to 3 , arrows of the N-poles and the S-poles indicate directions of force applied to the rotor by attractive force and repulsive force formed at the N-poles and the S-poles.FIG. 4 is an exemplary view illustrating a winding wire path of an armature coil according to an exemplary embodiment of the present invention, andFIG. 5 is an exemplary view illustrating a winding wire path of an armature coil according to another exemplary embodiment of the present invention. - As illustrated in
FIGS. 4 and 5 , thearmature coil 110 may include a phase drawing outunit 112, and a neutral pointwire connection portion 114. In addition, the winding wire paths of thearmature coil 110 may be opposite to each other in slots in which poles different from each other are generated. The arrow ofFIG. 4 indicates a direction in which thearmature coil 110 is wound. - The phase drawing out
unit 112 is a portion where the A phase, the B phase, or the C phase may be drawn out. In other words, the phase drawing outunit 112 is a slot which may be a starting point of six slots arranged to be a single unit. The neutral pointwire connection portion 114 is a portion where the three phases including the A phase, the B phase, and the C phase may be accessed in common In other words, the neutral pointwire connection portion 114 is a portion where thearmature coil 110, which is wound to implement the A phase, the B phase, and the C phase, may be connected by wire. - In
FIG. 4 ,Slot 1 andSlot 2 may be the slots which may be a starting point and an end point of six slots arranged to be a single unit. For example, whenSlot 1 is slot No. 1,Slot 2 may be slot No. 6, whenSlot 1 is slot No. 5,Slot 2 may be slot No. 10, and whenSlot 1 is slot No. 9,Slot 2 may be slot No. 14. In addition,Slot 3 andSlot 4 may be the slots which may be a starting point and an end point of six slots arranged to be a single unit, andSlot 3 may be a slot that is a neighboring slot toSlot 2. For example, whenSlot 2 is slot No. 6,Slot 3 is slot No. 7, andSlot 4 is slot No. 12. - Moreover, as the
armature coil 110 is wound to sequentially pass throughSlot 1,Slot 2,Slot 4 andSlot 3, a direction of thearmature coil 110 wound atSlot 1 andSlot 2 and a direction of thearmature coil 110 wound atSlot 4 andSlot 3 may be opposite to each other. In addition,Slot 1 may be a phase drawing out slot where the phase drawing outunit 112 is disposed, andSlot 3 may be a neutral point slot where the neutral pointwire connection portion 114 is disposed. - In
FIG. 5 ,Slot 5 andSlot 6 may be the slots which may be a starting point and an end point of six slots arranged to be a single unit. For example, whenSlot 5 is slot No. 37,Slot 6 may be slot No. 42, whenSlot 5 is slot No. 41,Slot 6 may be slot No. 46, and whenSlot 5 is slot No. 45,Slot 6 may be slot No. 2. In addition,Slot 7 andSlot 8 may be the slots which may be a starting point and an end point of six slots arranged to be a single unit, and -
Slot 7 may be a slot that is a neighboring slot toSlot 6. For example, whenSlot 6 is slot No. 42,Slot 7 is slot No. 43, andSlot 8 is slot No. 48. - Furthermore, as the
armature coil 110 is wound to sequentially pass throughSlot 8,Slot 7,Slot 5 andSlot 6, a direction of thearmature coil 110 wound atSlot 8 andSlot 7 and a direction of thearmature coil 110 wound atSlot 5 andSlot 6 may be opposite to each other. - In addition,
Slot 8 may be a phase drawing out slot where the phase drawing outunit 112 is disposed, andSlot 6 may be a neutral point slot where the neutral pointwire connection portion 114 is disposed. - In particular, a method in which the
armature coil 110 sequentially passes throughSlot 1,Slot 2,Slot 4, andSlot 3 may be a winding method in which the armature coil may be wound to sequentially turn the armature coil around six slots, in which the N-poles may be generated, in a clockwise direction, and then sequentially turn around the other six slots, in which the S-poles may be generated, in a counterclockwise direction. In addition, a method in which thearmature coil 110 sequentially passes throughSlot 8,Slot 7,Slot 5, andSlot 6 may be a winding method in which the armature coil may be wound to sequentially turn the armature coil around six slots, in which the S-poles may be generated, in a counterclockwise direction, and then sequentially turn around the other six slots, in which the N-poles may be generated, in a clockwise direction. - The two winding methods may be winding methods that turn the
armature coil 110 around twelve slots including the N-pole and the S-pole one by one. In addition, the slots may be determined in a sequential order from No. 1 slot to the last numbered slot in a clockwise direction of a circumference of thestator 100. - When the number of slots is an even multiple of twelve, the method, which sequentially passes through
Slot 1,Slot 2,Slot 4 andSlot 3, may be used from No. 1 slot to the slot having half the number of slots, and the method, which sequentially passes throughSlot 8,Slot 7,Slot 5, andSlot 6, may be used from the next slot of the slot having half the number of slots to the last numbered slot. In addition, when the number of slots is an odd multiple of twelve, the method, which sequentially passes throughSlot 1,Slot 2,Slot 4 andSlot 3, may be used from No. 1 slot to the slot numbered by (the number of the slots/2)+6, and the method, which sequentially passes throughSlot 8,Slot 7,Slot 5, andSlot 6, may be used from the slot numbered by (the number of the slots/2)+7 to the last numbered slot. -
FIG. 6 is an exemplary view illustrating a method of drawing out a stator for a synchronous motor according to an exemplary embodiment of the present invention. In addition, methods of drawing out thestator 100 at the C phase, the B phase, and the A phase are sequentially illustrated from top to bottom inFIG. 6 . - The
stator 100, which implements the C phase, may include four phase drawing out slots C1, C2, C3 and C4, and four neutral point slots Nc1, Nc2, Nc3, and Nc4. Thearmature coil 110, which may be disposed at the slot Nos. 1 to 12, and thearmature coil 110, which may be disposed at the slot Nos. 13 to 24, may be wound to implement the C phase according to the exemplary embodiment of the present invention which is illustrated inFIG. 4 . Therefore, slot No. 1 and slot No. 13 may be the phase drawing out slots C1 and C2, and slot No. 7 and slot No. 19 may be the neutral point slots Nc1 and Nc2. In addition, thearmature coil 110, which may be disposed at the slot Nos. 25 to 36, and thearmature coil 110, which may be disposed at the slot Nos. 37 to 48, may be wound to implement the C phase according to another exemplary embodiment of the present invention which is illustrated inFIG. 5 . Therefore, slot No. 36 and slot No. 48 may be phase drawing out slots C3 and C4, and slot No. 30 and slot No. 42 may be the neutral point slots Nc3 and Nc4. - The
stator 100, which implements the B phase, may include four phase drawing out slots B1, B2, B3 and B4, and four neutral point slots Nb1, Nb2, Nb3, and Nb4. Thearmature coil 110, which may be disposed at the slot Nos. 5 to 16, and thearmature coil 110, which may be disposed at the slot Nos. 17 to 28, may be wound to implement the B phase according to the exemplary embodiment of the present invention which is illustrated inFIG. 4 . Therefore, slot No. 5 and slot No. 17 may be the phase drawing out slots B4 and B1, and slot No. 11 and slot No. 23 may be the neutral point slots Nb4 and Nb1. In addition, thearmature coil 110, which may be disposed at the slot Nos. 29 to 40, and thearmature coil 110, which may be disposed at the slot Nos. 41 to 4, may be wound to implement the B phase according to another exemplary embodiment of the present invention which is illustrated inFIG. 5 . Therefore, slot No. 40 and slot No. 4 may be the phase drawing out slots B2 and B3, and slot No. 34 and slot No. 46 may be the neutral point slots Nb2 and Nb3. - The
stator 100, which implements the A phase, may include four phase drawing out slots A1, A2, A3, and A4, and four neutral point slots Na1, Na2, Na3, and Na4. Thearmature coil 110, which may be disposed at the slot Nos. 9 to 20, and thearmature coil 110, which may be disposed at the slot Nos. 21 to 32, may be wound to implement the A phase according to the exemplary embodiment of the present invention which is illustrated inFIG. 4 . Therefore, slot No. 9 and slot No. 21 may be the phase drawing out slots A2 and A3, and slot No. 15 and slot No. 27 may be the neutral point slots Na2 and Na3. In addition, thearmature coil 110, which may be disposed at the slot Nos. 33 to 44, and thearmature coil 110, which may be disposed at the slot Nos. 45 to 8, may be wound to implement the A phase according to another exemplary embodiment of the present invention which is illustrated in -
FIG. 5 . Therefore, slot No. 44 and slot No. 8 may be the phase drawing out slots A4 and A1, and slot No. 38 and slot No. 2 may be the neutral point slots Na4 and Na1. -
FIG. 7 is an exemplary view illustrating a phase drawing out slot and a phase drawing out distance of a stator for a synchronous motor according to an exemplary embodiment of the present invention. - As illustrated in
FIGS. 6 and 7 , the phase drawing out slots C1, C2, C3, and C4 of the C phase may be slot Nos. 1, 13, 36, and 48. In addition, the phase drawing out distance may refer to a distance from a first phase drawing out slot C1 to each of the phase drawing out slots C1, C2, C3, and C4. Moreover, a unit of the phase drawing out distance may be one cell that is based on one slot and another neighboring slot. - Referring to
FIG. 1 , a distance from slot No. 1, which is the first phase drawing out slot C1, to slot No. 1, which is the first phase drawing out slot C1, may be zero. In addition, a distance from slot No. 1, which is the first phase drawing out slot C1, to slot No. 13, which is a second phase drawing out slot C2, may be twelve in a clockwise direction. Moreover, a distance from slot No. 1, which is the first phase drawing out slot C1, to slot No. 36, which is a third phase drawing out slot C3, may be thirteen in a counterclockwise direction. Moreover, a distance from slot No. 1, which is the first phase drawing out slot C1, to slot No. 48, which is a fourth phase drawing out slot C4, may be one in a counterclockwise direction. - The phase drawing out slots B1, B2, B3, and B4 of the B phase may be slot Nos. 17, 40, 4, and 5. In addition, the phase drawing out distance may refer to a distance from a first phase drawing out slot B4 to each of the phase drawing out slots B4, B1, B2, and B3. Moreover, a unit of the phase drawing out distance may be one cell that is based on one slot and another neighboring slot.
- Referring to
FIG. 2 , a distance from slot No. 5, which is the first phase drawing out slot B4, to slot No. 5, which is the first phase drawing out slot B4, may be zero. In addition, a distance from slot No. 5, which is the first phase drawing out slot B4, to slot No. 17, which is a second phase drawing out slot B1, may be twelve in a clockwise direction. Moreover, a distance from slot No. 5, which is the first phase drawing out slot B4, to slot No. 40, which is a third phase drawing out slot B2, may be thirteen in a counterclockwise direction. Moreover, a distance from slot No. 5, which is the first phase drawing out slot B4, to theslot No 4, which is a fourth phase drawing out slot B3, may be one in a counterclockwise direction. - The phase drawing out slots A1, A2, A3, and A4 of the A phase may be slot Nos. 8, 9, 21, and 44. In addition, the phase drawing out distance may refer to a distance from a first phase drawing out slot A2 to each of the phase drawing out slots A2, A3, A4, and A1. Moreover, a unit of the phase drawing out distance may be one cell that is based on one slot and another neighboring slot.
- Referring to
FIG. 3 , a distance from slot No. 9, which is the first phase drawing out slot A2, to slot No. 9, which is the first phase drawing out slot A2, may be zero. In addition, a distance from slot No. 9, which is the first phase drawing out slot A2, to slot No. 21, which is a second phase drawing out slot A3, may be twelve in a clockwise direction. Moreover, a distance from slot No. 9, which is the first phase drawing out slot A2, to slot No. 44, which is a third phase drawing out slot A4, may be thirteen in a counterclockwise direction. Moreover, a distance from slot No. 9, which is the first phase drawing out slot A2, to slot No. 8, which is a fourth phase drawing out slot A1, may be one in a counterclockwise direction. - In other words, all the phase drawing out distances by the
armature coil 110 wound according to the exemplary embodiment and another exemplary embodiment of the present invention may be equal to or less than thirteen. - As described above, according to an exemplary embodiment of the present invention, resistance of the
armature coil 110 may be reduced, and resistance imbalance of thearmature coil 110 may be improved, by minimizing the drawing out distance which is a distance between the phase drawing outunits 112 of thearmature coil 110. Therefore, performance of the synchronous motor may be improved. In addition, a length of thearmature coil 110 may be shortened. Therefore, material costs of thestator 100 may be reduced. - While this invention has been described in connection with what is presently considered to be exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments. On the contrary, it is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the accompanying claims.
Claims (7)
1-6. (canceled)
7. A stator for a synchronous motor, comprising:
an armature coil configured to generate north (N) pole and a south (S) pole by applying a current; and
a plurality of slots radially formed at which the armature coil is disposed and of which the number is a multiple of twelve;
wherein the armature coil alternately implements N-poles and S-poles by arranging a group of six slots as a single unit when the current is applied to the armature coil,
wherein each slot includes a plurality of phase drawing out slots, and
wherein one phase drawing out slot of the plurality of phase drawing out slots is set as a first phase drawing out slot when the order of the plurality of phase drawing out slots is determined in a clockwise direction,
wherein at least two methods of winding the armature coil to turn around the slot are used to maintain a distance from the first phase drawing out slot to the last phase drawing out slot as a minimum value by setting a cell between neighboring slots as a unit.
8. The stator for a synchronous motor of claim 7 , wherein the number of the plurality of phase drawing out slots is the number of the slots divided by twelve.
9. The stator for a synchronous motor of claim 7 , wherein the at least two winding methods include:
winding methods of turning around twelve slots including the N-pole and the S-pole one by one, and
a first method in which the armature coil is wound to sequentially turn the armature coil around six slots, in which the N-poles are generated, in a clockwise direction, and then sequentially turns around the other six slots, in which the S-poles are generated, in a counterclockwise direction, and
a second method in which the armature coil is wound to sequentially turn the armature coil sequentially turns around six slots, in which the S-poles are generated, in a counterclockwise direction, and then sequentially turns around the other six slots, in which the N-poles are generated, in a clockwise direction.
10. The stator for a synchronous motor of claim 7 , wherein:
the at least two winding methods are winding methods that turn around twelve slots including the N-pole and the S-pole one by one,
the slots are determined in sequential order from No. 1 slot to the last numbered slot in a clockwise direction, and
when the number of slots is an even multiple of twelve, the first method is used from No. 1 slot to the slot having half the number of slots, and the second method is used from the next slot of the slot having half the number of slots to the last numbered slot.
11. The stator for a synchronous motor of claim 7 , wherein:
the at least two winding methods are winding methods that turn around twelve slots including the N-pole and the S-pole one by one,
the slots are determined in sequential order from No. 1 slot to the last numbered slot in a clockwise direction, and
when the number of slots is an odd multiple of twelve, the first method is used from No. 1 slot to the slot numbered by (the number of the slots/2)+6, and the second method is used from the slot numbered by (the number of the slots/2)+7 to the last numbered slot.
12. (canceled)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US15/384,596 US20170104379A1 (en) | 2012-12-31 | 2016-12-20 | Stator for synchronous motor |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020120158608A KR101427944B1 (en) | 2012-12-31 | 2012-12-31 | Stator for synchronous motor |
KR10-2012-0158608 | 2012-12-31 | ||
US14/096,507 US9641035B2 (en) | 2012-12-31 | 2013-12-04 | Stator with phase drawing out slots for synchronous motor |
US15/384,596 US20170104379A1 (en) | 2012-12-31 | 2016-12-20 | Stator for synchronous motor |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US14/096,507 Division US9641035B2 (en) | 2012-12-31 | 2013-12-04 | Stator with phase drawing out slots for synchronous motor |
Publications (1)
Publication Number | Publication Date |
---|---|
US20170104379A1 true US20170104379A1 (en) | 2017-04-13 |
Family
ID=51016372
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US14/096,507 Active 2035-06-07 US9641035B2 (en) | 2012-12-31 | 2013-12-04 | Stator with phase drawing out slots for synchronous motor |
US15/384,596 Abandoned US20170104379A1 (en) | 2012-12-31 | 2016-12-20 | Stator for synchronous motor |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US14/096,507 Active 2035-06-07 US9641035B2 (en) | 2012-12-31 | 2013-12-04 | Stator with phase drawing out slots for synchronous motor |
Country Status (3)
Country | Link |
---|---|
US (2) | US9641035B2 (en) |
KR (1) | KR101427944B1 (en) |
CN (1) | CN103915922B (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR101673329B1 (en) * | 2014-12-03 | 2016-11-07 | 현대자동차 주식회사 | Phase current arrangement for hairpin winding motor |
KR101655147B1 (en) * | 2014-12-03 | 2016-09-07 | 현대자동차 주식회사 | Phase current arrangement for hairpin winding motor |
KR102487169B1 (en) | 2016-12-15 | 2023-01-10 | 현대자동차 주식회사 | Stator for driving motor |
KR102506928B1 (en) * | 2018-01-03 | 2023-03-07 | 현대자동차 주식회사 | Stator for driving motor |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2012016195A (en) * | 2010-07-01 | 2012-01-19 | Toyota Motor Corp | Stator of rotary electric machine |
US20120016195A1 (en) * | 2010-07-17 | 2012-01-19 | King Debra A | Methods and systems for minimally invasive endoscopic surgeries |
US20120025659A1 (en) * | 2009-04-13 | 2012-02-02 | Kabushiki Kaisha Toshiba | Armature winding of rotating electrical machine |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP3403690B2 (en) * | 2000-03-02 | 2003-05-06 | 株式会社日立製作所 | Hybrid electric vehicle using permanent magnet type rotating electric machine |
DE102005012244B4 (en) | 2005-03-15 | 2008-12-24 | Rena Sondermaschinen Gmbh | Method for cleaning objects by means of ultrasound |
JP2008099416A (en) | 2006-10-11 | 2008-04-24 | Mitsuba Corp | Armature for motor, motor, and winding method of armature for motor |
KR20090102517A (en) | 2008-03-26 | 2009-09-30 | 주식회사 원진일렉트로닉스 | Bldc motor equipped with 12 slots and 10 poles |
US8069555B2 (en) | 2010-02-18 | 2011-12-06 | Tesla Motors, Inc. | Manufacturing method utilizing a dual layer winding pattern |
CN102306991B (en) | 2011-09-26 | 2013-08-14 | 江西省迪普安数字功率技术发展有限公司 | Permanent magnetism servo synchronous motor three-phase winding |
CN202218072U (en) | 2011-09-26 | 2012-05-09 | 佛山市南海晶惠普电子科技有限公司 | Three-phase winding for permanent magnet synchronous servomotor |
-
2012
- 2012-12-31 KR KR1020120158608A patent/KR101427944B1/en active IP Right Grant
-
2013
- 2013-12-04 US US14/096,507 patent/US9641035B2/en active Active
- 2013-12-13 CN CN201310683860.5A patent/CN103915922B/en active Active
-
2016
- 2016-12-20 US US15/384,596 patent/US20170104379A1/en not_active Abandoned
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20120025659A1 (en) * | 2009-04-13 | 2012-02-02 | Kabushiki Kaisha Toshiba | Armature winding of rotating electrical machine |
JP2012016195A (en) * | 2010-07-01 | 2012-01-19 | Toyota Motor Corp | Stator of rotary electric machine |
US20120016195A1 (en) * | 2010-07-17 | 2012-01-19 | King Debra A | Methods and systems for minimally invasive endoscopic surgeries |
Non-Patent Citations (1)
Title |
---|
Machine translation of JP 2012016195 A (01-2012). * |
Also Published As
Publication number | Publication date |
---|---|
US20140184013A1 (en) | 2014-07-03 |
KR20140089017A (en) | 2014-07-14 |
KR101427944B1 (en) | 2014-08-11 |
CN103915922A (en) | 2014-07-09 |
US9641035B2 (en) | 2017-05-02 |
CN103915922B (en) | 2018-03-23 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN105680600B (en) | Stator winding pattern for hairpin drive motor | |
US20170104379A1 (en) | Stator for synchronous motor | |
CN107852051B (en) | Electric motor | |
EP3214733B1 (en) | Rotating electrical machine | |
US10784737B2 (en) | Rotating electrical machine and method for manufacturing same | |
US10236732B2 (en) | Inductor type rotary motor | |
CN102160267B (en) | Permanent magnet-type stepping motors | |
US9118231B2 (en) | Stator of rotating electrical machine and rotating electrical machine | |
CN103872808A (en) | Electric machine with fractional slot windings | |
TWI511421B (en) | Rotary electric machine | |
US20230369921A1 (en) | Stator and motor | |
CN103931088B (en) | Flux switch motor | |
US9806588B2 (en) | Electric motor | |
JP2011087382A (en) | Motor | |
US10432040B2 (en) | Permanent magnet synchronous motor | |
CN109075641B (en) | Three-phase synchronous machine and manufacturing method thereof | |
KR101683779B1 (en) | Switched reluctance motor using the same | |
JP6582973B2 (en) | Rotating electric machine and manufacturing method thereof | |
US20240120794A1 (en) | Motor | |
US20240048006A1 (en) | Stator for an electric machine, electric machine for driving a vehicle, and vehicle | |
KR20170047563A (en) | The stator improving the asymmetry of magnetic flux density in the unipolar type and step motor comprising the same | |
JP2011091961A (en) | Motor | |
Zakaria et al. | Magnetic Flux Analysis of E-Core Hybrid Excited FSM with Various Rotor-Pole Topologies | |
KR20190083151A (en) | Stator for driving motor | |
JP2014107898A (en) | Rotary electric machine |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
STPP | Information on status: patent application and granting procedure in general |
Free format text: FINAL REJECTION MAILED |
|
STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION |