CN218920219U - Forty-twelve slot permanent magnet motor - Google Patents
Forty-twelve slot permanent magnet motor Download PDFInfo
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- CN218920219U CN218920219U CN202223447083.8U CN202223447083U CN218920219U CN 218920219 U CN218920219 U CN 218920219U CN 202223447083 U CN202223447083 U CN 202223447083U CN 218920219 U CN218920219 U CN 218920219U
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Abstract
The utility model relates to the technical field of motors, and provides a forty-two slot permanent magnet motor. Comprising the following steps: the rotor body is formed by laminating rotor sheets, and permanent magnets are embedded in the rotor body; the stator body comprises a stator core formed by laminating stator sheets, forty-two coil inserting grooves are uniformly distributed in the circumferential direction of the stator sheets, a plurality of groups of armature windings are wound on the stator core, and each armature winding is formed by coils with different numbers; and an armature controller for adjusting and/or controlling a circuit state of each of the armature windings. The on-off state and circuit switching of each armature winding circuit are regulated and controlled by the armature controller, a conventional driver field weakening control method and a plurality of motors and driver configuration modes are not needed, the requirements of load objects for efficient operation under different high-speed working conditions are met at various different rated speeds, and the fault tolerance function of the motor is increased.
Description
Technical Field
The utility model relates to the technical field of motors, in particular to a forty-two slot permanent magnet motor.
Background
Conventional permanent magnet synchronous motors need to rely on the motor drive to perform field weakening control on the permanent magnet motor at constant power conditions when operating above the rated speed of the motor, i.e., increasing Id field weakening current and decreasing Iq torque current magnitude, but this approach needs to be at the expense of increased energy consumption.
In the prior art, the problem of weak magnetic energy consumption is solved, a plurality of permanent magnet motors with different parameters are generally used for configuring a plurality of drivers to respectively meet the demands of rotating speeds under various working conditions, and the mode is extremely inconvenient to use and increases the production cost of enterprises.
Disclosure of Invention
The utility model provides a forty-two slot permanent magnet motor, which is used for solving the defect that the conventional permanent magnet motor can meet the requirements of various working condition rotating speeds only by arranging a plurality of motors and drivers thereof, and realizing that the requirements of various working condition rotating speeds can be met by only one motor and an armature controller thereof.
The utility model provides a forty-two slot permanent magnet motor, comprising:
the rotor body is formed by laminating rotor sheets, and permanent magnets are embedded in the rotor body;
the stator body comprises a stator core formed by laminating stator sheets, forty-two coil inserting grooves are uniformly distributed in the circumferential direction of the stator sheets, a plurality of groups of armature windings are wound on the stator core, and each armature winding is formed by coils with different numbers; and
and the armature controller is used for adjusting and/or controlling the circuit state of each armature winding, and is integrated with the motor or arranged separately from the motor.
According to the forty-two slot permanent magnet motor provided by the utility model, the armature winding comprises a first-level armature winding and a second-level armature winding;
the first-level armature winding comprises a three-phase forty-two-slot single-layer armature winding, a twenty-four-slot single-layer armature winding and an eighteen-slot double-layer armature winding;
the second-level armature winding comprises the three-phase forty-two-slot single-layer armature winding, the twenty-four-slot single-layer armature winding the eighteen-slot double-layer armature winding is respectively reduced by half to form a three-phase twenty-one-slot single-double-layer armature winding, a twelve-slot single-layer armature winding and a nine-slot double-layer armature winding.
According to the forty-two slot permanent magnet motor provided by the utility model, the armature controller comprises a circuit connection structure, wherein the circuit connection structure is a structure of a switching device between each armature winding, a structure of the switching device between phase windings of each armature winding and a structure of the switching device between coils of the phase windings of each armature winding.
According to the forty-two slot permanent magnet motor provided by the utility model, the included angle between the two end points of the side of the wire embedding slot near the periphery of the stator piece and the connecting line of the circle center of the stator piece is 4.51-4.98 degrees, the slot sides of two adjacent wire embedding slots are parallel, and the ratio of the outer diameter to the inner diameter of the stator piece is 1.39-1.54.
According to the forty-two-slot permanent magnet motor provided by the utility model, eight groups of magnetic steel slots are arranged at the position, close to the periphery, of the rotor sheet in a circumferential array, each magnetic steel slot comprises a tangential magnetic steel slot and two bottom magnetic steel slots, and one end, close to the axial center, of each tangential magnetic steel slot is respectively connected with the ends of the bottom magnetic steel slots on the left side and the right side of the tangential magnetic steel slot;
the two long sides of the bottom magnetic steel groove are parallel, the central line of the bottom magnetic steel groove is perpendicular to the connecting line of the circle center, and the included angle between the connecting line of the left and right endpoints of the upper groove side of the bottom magnetic steel groove and the circle center of the rotor sheet is 32.39-35.81 degrees;
the included angle between the connecting line of the end points, which are opposite to the tangential magnetic steel grooves, of the edges near the periphery of the rotor sheet and the circle center of the rotor sheet is 35.42-39.15 degrees.
According to the forty-two slot permanent magnet motor provided by the utility model, the pole number of the rotor is an integral multiple of 2, the slot pole ratio of the motor adopts fractional slot pole ratio and/or integer slot pole ratio, and the number of armature winding branches matched with different pole slots is more than one path, and the armature winding branches are connected in parallel or in series.
According to the forty-two slot permanent magnet motor provided by the utility model, the armature winding coil pitches of different slot pole ratios are 1-2, 1-3, 1-4, 1-5, 1-6 or the combination of the increment numbers thereof.
According to the forty-two slot permanent magnet motor provided by the utility model, the armature winding comprises three phases and more than three phases of armature windings.
According to the forty-two slot permanent magnet motor provided by the utility model, the permanent magnet motor comprises a permanent magnet motor and a permanent magnet generator.
The utility model provides a forty-two slot permanent magnet motor, comprising: the rotor body is formed by laminating rotor sheets, and permanent magnets are embedded in the rotor body; the stator body comprises a stator core formed by laminating stator sheets, forty-two coil inserting grooves are uniformly distributed in the circumferential direction of the stator sheets, a plurality of groups of armature windings are wound on the stator core, and each armature winding is formed by coils with different numbers; and an armature controller for adjusting and/or controlling a circuit state of each of the armature windings. According to the utility model, forty-two wire embedding grooves are formed in the stator sheet, so that a plurality of groups of different armature windings can be arranged on the stator body, multiple counter electromotive forces are obtained through the cooperation operation of the rotor body and the armature windings with different stator groove numbers, the permanent magnet motor has multiple fundamental frequency rotating speeds, meanwhile, the on and off of each armature winding circuit and circuit switching are regulated and controlled through the armature controller, a conventional driver field weakening control method and multiple motor and driver configuration modes are not needed, the requirements of load objects on efficient operation under different high-speed working conditions are met at multiple different rated rotating speeds, and the fault-tolerant function of the motor is increased.
Drawings
In order to more clearly illustrate the utility model or the technical solutions of the prior art, the following description will briefly explain the drawings used in the embodiments or the description of the prior art, and it is obvious that the drawings in the following description are some embodiments of the utility model, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic diagram of a stator armature winding of a forty-two slot permanent magnet motor provided by the present utility model;
fig. 2 is a schematic diagram of an armature controller switch circuit of a forty-two slot permanent magnet motor provided by the utility model;
fig. 3 is a schematic structural diagram of a stator piece of a forty-two slot permanent magnet motor provided by the utility model;
fig. 4 is a schematic diagram of a rotor sheet structure of a forty-two slot permanent magnet motor provided by the utility model.
Reference numerals:
101. a forty-two slot single-double layer armature winding; 102. twenty-four slot single layer armature windings; 103. eighteen-slot double-layer armature winding; 104. twenty-one slot single-double layer armature winding; 105. twelve-slot single-layer armature winding; 106. nine-slot double-layer armature winding; 107. an armature controller; 108. a bottom magnetic steel groove; 109. tangential magnetic steel grooves; 110. and a wire embedding groove.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the present utility model more apparent, the technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings, and it is apparent that the described embodiments are some embodiments of the present utility model, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
The utility model provides a forty-two slot permanent magnet motor.
In an embodiment of the present utility model, as shown in fig. 1 to 4, a forty-two slot permanent magnet motor includes: the eight-pole rotor body is formed by laminating rotor sheets, and permanent magnets are embedded in the eight-pole rotor body; the forty-twelve-slot stator body comprises a stator core formed by laminating stator sheets, forty-twelve coil inserting slots are uniformly distributed on the stator sheets along the circumferential direction, a plurality of groups of armature windings are wound on the stator core, and each armature winding is composed of coils with different numbers; and an armature controller 107 to adjust and/or control the circuit state of each armature winding.
Specifically, in the present application, the forty-two slot permanent magnet motor may be a permanent magnet motor or a permanent magnet generator. The present application describes a forty-two slot permanent magnet motor as a permanent magnet motor, and other embodiments may be implemented with reference to this embodiment.
In an embodiment of the utility model, the armature winding comprises a first-level armature winding and a second-level armature winding; the first-level armature winding comprises a three-phase forty-two-slot single-layer armature winding 101, a twenty-four-slot single-layer armature winding 102 and an eighteen-slot double-layer armature winding 103; the second-level armature winding comprises a three-phase twenty-four-slot single-double-layer armature winding 104, a twelve-slot single-layer armature winding 105 and a nine-slot double-layer armature winding 106 which are formed by reducing the number of coils of the three-phase twenty-four-slot single-double-layer armature winding, the twenty-four-slot single-layer armature winding and the eighteen-slot double-layer armature winding by half respectively.
Referring to fig. 1, in some embodiments of the present utility model, a forty-two-slot single-double-layer armature winding 101 of a first layer is sequentially composed of coils of an eighteen-slot double-layer armature winding 103 and coils of a twenty-four-slot single-layer armature winding 102, which are sequentially staggered in forty-two wire embedding slots 110 according to a pitch of seven and a pitch of five, respectively, and thirty coils are grouped into Uu-phase, vv-phase and Ww-phase windings, each phase winding including ten coils.
The Uu phase winding includes:
u1, U2, U9, U10, U13, U16, U17, U24, U25, U28 coils;
the Vv phase winding includes:
v4, V5, V8, V11, V12, V19, V20, V23, V26, V27 coils;
the Ww phase winding includes:
w3, W6, W7, W14, W15, W18, W21, W22, W29, W30 coils.
The coils of the twenty-four-slot single-layer armature winding 102 of the first level occupy twenty-four wire-embedding slots 110, the coil pitch is five, and twelve coils are divided into u, v, w three-phase windings, each phase winding comprising four coils.
The u-phase winding comprises u2, u10, u17 and u25 coils,
the v-phase winding comprises v5, v12, v20 and v27 coils,
the w-phase winding comprises w7, w15, w22 and w30 coils.
The coils of the eighteen-slot double-layer armature winding 103 of the first level occupy eighteen wire embedding slots 110, the coil pitch is seven, the eighteen coils are divided into U, V, W three-phase windings, and each phase winding comprises six coils.
The U-phase winding comprises coils of U1, U9, U13, U16, U24 and U28,
the V-phase winding comprises V4, V8, V11, V19, V23 and V26 coils,
the W phase winding comprises W3, W6, W14, W18, W21 and W29 coils.
The twenty-first-slot single-double-layer armature winding 104 of the second level is composed of coils of a nine-slot double-layer armature winding 106 and coils of a twelve-slot single-layer armature winding 105 which are sequentially staggered in twenty-first coil inserting slots 110 according to a pitch of seven and a pitch of five respectively, wherein fifteen coils are grouped into Uu-phase, vv-phase and Ww-phase windings, and each phase winding comprises five coils.
The Uu phase winding includes: u1, U2, U13, U17, U24 coils,
the Vv phase winding includes: v4, V11, V12, V23, V27 coils,
the Ww phase winding includes: w3, W7, W14, W21, W22, and a coil.
The coils of the twelve-slot single-layer armature winding 105 of the second level occupy twelve wire-embedding slots 110, the coil pitch is five, and the six coils are divided into u, v and w three-phase windings, each phase winding comprises two coils.
The u-phase winding includes: u2, u17 coils,
the v-phase winding includes: v12, v27 coils,
the w-phase winding includes: w7, w22 coils.
The coils of the second level nine-slot double-layer armature winding 106 occupy nine coil inserting slots 110, the coil pitch is seven, the nine coils are divided into U, V, W three-phase windings, and each phase winding comprises three coils.
The U-phase winding includes: u1, U13, U24 coils,
the V-phase winding comprises V4, V11 and V23 coils,
the W phase winding comprises W3, W14 and W21 coils.
Referring to fig. 2, fig. 2 shows the switching device circuit relationship among forty-two slot single-double-layer armature winding 101, twenty-four slot single-layer armature winding 102, eighteen slot double-layer armature winding 103, twenty-one slot single-double-layer armature winding 104, twelve slot single-layer armature winding 105, nine slot double-layer armature winding 106, each phase winding, and each three-phase winding.
In accordance with some embodiments of the present utility model, when forty-two slot single-double layer armature winding 101 is in operation, the series sequence of the coils of eighteen slot double layer armature winding 103 and thirty coils of twenty-four slot single layer armature winding 102 is:
—U1-u2-U9-u10-U13-U16-u17-U24-u25-U28—，
—V4-v5-V8-V11-v12-V19-v20-V23-V26-v27—，
—W3-W6-w7-W14-w15-W18-W21-w22-W29-w30—。
the terminals at the tail parts of the Uu phase, the Vv phase and the Ww phase windings are connected in a star-shaped sealing point manner or in an angular manner according to working condition requirements to form the three-phase forty-two-slot single-double-layer armature winding 101.
When twenty-four slot single layer armature winding 102 is in operation, the series sequence of twelve coils is:
—u2-u10-u17-u25—，
—v5-v12-v20-v27—，
—w7-w15-w22-w30—。
the u-phase winding, the v-phase winding and the w-phase winding are connected by star-shaped sealing points at the tail end or angle-shaped according to working condition requirements to form the three-phase twenty-four-slot single-layer armature winding 102.
When the eighteen-slot double-layer armature winding 103 works, the series sequence of eighteen coils is as follows:
—U1-U9-U13-U16-U24-U28—，
—V4-V8-V11-V19-V23-V26—，
—W3-W6-W14-W18-W21-W29—。
the U-phase winding, the V-phase winding and the wiring end of the W-phase winding are connected in a star-shaped sealing point manner, or are connected in an angle manner according to working condition requirements, so that the three-phase eighteen-slot double-layer armature winding 103 is formed.
When the twenty-first slot single-double layer armature winding 104 is in operation, the fifteen coils are connected in series in the following order:
—U1-u2-U13-u17-U24—，
—V4-V11-v12-V23-v27—，
—W3-w7-W14-W21-w22-—。
the terminals at the tail parts of the Uu phase, the Vv phase and the Ww phase windings are connected in a star-shaped sealing point manner, or are connected in an angle manner according to working condition requirements, so that the three-phase twenty-one-slot single-double-layer armature winding 104 is formed.
When the twelve-slot single-layer armature winding 105 is operated, the six coils are connected in series in the following order:
—u2-u17—，
—v12-v27—，
—w7-w22—。
the u-phase winding, the v-phase winding and the w-phase winding are connected by star-shaped sealing points at the tail end terminals or angle-shaped connection is performed according to working condition requirements to form the three-phase twelve-slot single-layer armature winding 105.
When the nine-slot double-layer armature winding 106 works, the nine coils are connected in series in the following order:
—U1-U13-U24—，
—V4-V11-V23—，
—W3-W14-W21—。
the U-phase winding, the V-phase winding and the wiring end of the W-phase winding are connected in a star-shaped sealing point manner, or are connected in an angle manner according to working condition requirements, so that the three-phase nine-slot double-layer armature winding 106 is formed.
Referring to fig. 2, according to some embodiments of the utility model, the armature controller 107 is a circuit connection made by a switching device between each armature winding, between each armature winding phase winding coil, for adjusting and controlling the on and off of each armature winding circuit and the circuit switching. Therefore, the permanent magnet motor can be switched under different back electromotive force states, and different fundamental frequency rotating speeds can be obtained by the permanent magnet motor. The conventional driver flux weakening control method and a plurality of motors and driver configuration modes are not needed, the requirements of load objects for efficient operation under different high-speed working conditions are met at various different rated speeds, and the fault tolerance function of the motors is increased.
Referring to fig. 3, in some embodiments according to the present utility model, the included angle between the two end points of the side of the slot 110 near the periphery of the stator piece and the connecting line of the center of the stator piece is 4.51 ° to 4.98 °. The edges of two adjacent wire embedding grooves 110 are parallel, and the ratio of the outer diameter to the inner diameter of the stator piece is 1.39-1.54. Alternatively, the included angle between the two end points of the edge of the coil inserting groove 110 near the periphery of the stator piece and the connecting line of the center of the stator piece can be 4.99 degrees, 4.50 degrees and the like; the ratio of the outer diameter to the inner diameter of the stator piece may be 1.40, 1.45, 1.50, 1.53, etc., and is not particularly limited herein, and may be adjusted as needed.
Referring to fig. 4, according to some embodiments of the present utility model, eight sets of magnetic steel grooves are arranged in a circumferential array near the outer periphery of the rotor sheet, each magnetic steel groove includes a tangential magnetic steel groove 109 and two bottom magnetic steel grooves 108, and one end of the tangential magnetic steel groove 109 near the axis is respectively engaged with the ends of the bottom magnetic steel grooves 108 on the left and right sides thereof; the two long sides of the bottom magnetic steel groove 108 are parallel, the central line is perpendicular to the connecting line of the circle center, and the included angle between the connecting line of the left and right endpoints of the groove side on the bottom magnetic steel groove 108 and the circle center of the rotor sheet is 32.39-35.81 degrees; the included angle between the connecting line of the end points, which are close to the periphery of the rotor sheet, of the two tangential magnetic steel grooves 109 and the circle center of the rotor sheet is 35.42-39.15 degrees. Optionally, the included angle between the connecting line of the left and right end points of the upper groove edge of the bottom magnetic steel groove 108 and the center of the rotor sheet can be 32.50 degrees, 33.50 degrees, 34.50 degrees, 35.50 degrees and the like; the included angles between the connecting lines of the end points of the opposite groove edges of the two tangential magnetic steel grooves 109 near the periphery of the rotor sheet and the circle center of the rotor sheet can be 35.50 degrees, 36.50 degrees, 37.50 degrees, 38.50 degrees and the like. The present utility model is not particularly limited, and may be adjusted as needed.
According to some embodiments of the utility model, the number of poles of the rotor is an integer multiple of 2, the slot pole ratio of the motor adopts fractional slot pole ratio and/or integer slot pole ratio, and the number of armature winding branches matched by different pole slots is more than one, and the armature winding branches are connected in parallel or in series.
According to some embodiments of the utility model, the armature winding coil pitches for different slot pole ratios are 1-2, 1-3, 1-4, 1-5, 1-6, or a combination between increasing numbers thereof.
According to some embodiments of the utility model, the armature winding includes a three-phase and more multiphase armature winding.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present utility model, and are not limiting; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present utility model.
Claims (9)
1. A forty-two slot permanent magnet motor, comprising:
the rotor body is formed by laminating rotor sheets, and permanent magnets are embedded in the rotor body;
the stator body comprises a stator core formed by laminating stator sheets, forty-two coil inserting grooves are uniformly distributed in the circumferential direction of the stator sheets, a plurality of groups of armature windings are wound on the stator core, and each armature winding is formed by coils with different numbers; and
an armature controller for adjusting and/or controlling a circuit state of each of the armature windings.
2. The forty-two slot permanent magnet machine of claim 1, wherein the armature windings comprise a first level armature winding and a second level armature winding;
the first-level armature winding comprises a three-phase forty-two-slot single-layer armature winding, a twenty-four-slot single-layer armature winding and an eighteen-slot double-layer armature winding;
the second-level armature winding comprises the three-phase forty-two-slot single-layer armature winding, the twenty-four-slot single-layer armature winding the eighteen-slot double-layer armature winding is respectively reduced by half to form a three-phase twenty-one-slot single-double-layer armature winding, a twelve-slot single-layer armature winding and a nine-slot double-layer armature winding.
3. The forty-two slot permanent magnet machine of claim 1 wherein the armature controller comprises a circuit connection structure that is a structure of switching devices between each armature winding, a structure of switching devices between phase windings of each armature winding, and a structure of switching devices between coils of phase windings of each armature winding.
4. The forty-two slot permanent magnet motor of claim 1, wherein the included angle between the two end points of the slot edge near the periphery of the stator piece and the connecting line of the circle center of the stator piece is 4.51-4.98 degrees, the slot edges of two adjacent slot edges are parallel, and the ratio of the outer diameter to the inner diameter of the stator piece is 1.39-1.54.
5. The forty-two slot permanent magnet motor according to claim 1, wherein eight groups of magnetic steel slots are arranged in a circumferential array at the position near the periphery of the rotor sheet, each magnetic steel slot comprises a tangential magnetic steel slot and two bottom magnetic steel slots, and one end of the tangential magnetic steel slot near the axis is respectively connected with the ends of the bottom magnetic steel slots at the left side and the right side of the tangential magnetic steel slot;
the two long sides of the bottom magnetic steel groove are parallel, the central line of the bottom magnetic steel groove is perpendicular to the connecting line of the circle center, and the included angle between the connecting line of the left and right endpoints of the upper groove side of the bottom magnetic steel groove and the circle center of the rotor sheet is 32.39-35.81 degrees;
the included angle between the connecting line of the end points, which are opposite to the tangential magnetic steel grooves, of the edges near the periphery of the rotor sheet and the circle center of the rotor sheet is 35.42-39.15 degrees.
6. The forty-two slot permanent magnet motor of claim 1, wherein the number of poles of the rotor is an integer multiple of 2, the slot pole ratio of the motor adopts fractional slot pole ratio and/or integer slot pole ratio, and the number of armature winding branches matched by different slots is more than one, and the armature winding branches are connected in parallel or in series.
7. The forty-two slot permanent magnet machine of claim 6, wherein the armature winding coil pitches for different slot pole ratios are 1-2, 1-3, 1-4, 1-5, 1-6, or a combination between increasing numbers thereof.
8. The forty-two slot permanent magnet machine of claim 1, wherein the armature windings comprise three or more phase armature windings.
9. The forty-two slot permanent magnet machine of any one of claims 1-8, wherein the permanent magnet machine comprises a permanent magnet motor and a permanent magnet generator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223447083.8U CN218920219U (en) | 2022-12-22 | 2022-12-22 | Forty-twelve slot permanent magnet motor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223447083.8U CN218920219U (en) | 2022-12-22 | 2022-12-22 | Forty-twelve slot permanent magnet motor |
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| Publication Number | Publication Date |
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| CN218920219U true CN218920219U (en) | 2023-04-25 |
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| CN202223447083.8U Active CN218920219U (en) | 2022-12-22 | 2022-12-22 | Forty-twelve slot permanent magnet motor |
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