An AC permanent magnet motor armature winding structure

Abstract

The present invention discloses an armature winding structure of an AC permanent magnet motor, which adopts a double-pitch double-layer same-side winding structure. The two coil sides of each coil of the armature winding of the AC permanent magnet motor are respectively located on the same side of two slots opened in the stator for installing the coils. The coil side of a coil at the bottom of each slot can be embedded in the slot first, and then the coil side of another coil at the top of the slot can be embedded in the slot. The coil side of any coil is parallel to and overlaps with the coils of other coils, and there is no intersection between the coils. The advantage is that the coils are arranged neatly and the end dimensions are relatively short. The coils do not overlap with each other. The wire embedding process is simple and can be machine-embedded, which can greatly improve operating efficiency.

Description

Technical Field

[0001] The present invention relates to an armature winding structure, in particular to an armature winding structure of an AC permanent magnet motor. Background Art

[0002] The armature winding in a motor bridges the gap between electrical and magnetic coupling, serving as the hub for electromechanical energy conversion and playing a core role in the motor. The armature winding consists of a number of conductors connected through various connection methods, each of which determines the motor's manufacturing process performance. The armature winding of an AC permanent magnet motor is located on the stator side of the motor. Based on the number of conductor layers within the slots, the armature winding can be categorized as single-layer or double-layer. Based on the coil connection pattern, it can be divided into stacked winding, wave winding, concentric winding, chain winding, and cross winding. Existing AC permanent magnet motor armature windings often use a double-layer stacked winding structure. This structure has advantages: it allows for optimal pitch design to optimize the induced electromotive force waveform; a short pitch design results in shorter end dimensions, saving copper at the end. However, its disadvantages are the complex winding process, requiring high operator skills and making it difficult to implement automated winding assembly lines.

[0003] The 36-slot, 8-pole, three-phase AC permanent magnet synchronous motor has a fractional slot winding structure and is commonly used in small and medium-sized industrial motors. To improve the induced electromotive force waveform, its armature winding often adopts a double-layer stacked winding structure, with a total of 12 coils per phase and a total of 36 coils for three phases. The coil distribution diagram of the armature winding of the 36-slot, 8-pole, three-phase AC permanent magnet synchronous motor is shown in the figure below. Figure 1 As shown, the A-phase winding expansion diagram is as follows Figure 2 As shown, Figure 1 and Figure 2 In the figure, 1-36 represent the slot numbers for installing coils in the stator, A represents one coil side of a coil in the A-phase winding, -A represents the other coil side of a coil in the A-phase winding, B represents one coil side of a coil in the B-phase winding, -B represents the other coil side of a coil in the B-phase winding, C represents one coil side of a coil in the C-phase winding, and -C represents the other coil side of a coil in the C-phase winding. Figure 1 and Figure 2It can be seen that in the existing 36-slot 8-pole three-phase AC permanent magnet synchronous motor armature winding, the winding pitch is 4. One coil side of the first coil of the A-phase winding is placed at the top of slot 1, and the other coil side is placed at the bottom of slot 5; one coil side of the second coil is placed at the top of slot 2, and the other coil side is placed at the bottom of slot 6; one coil side of the third coil is placed at the top of slot 6, and the other coil side is placed at the bottom of slot 10; one coil side of the fourth coil is placed at the top of slot 10, and the other coil side is placed at the bottom of slot 14; one coil side of the fifth coil is placed at the top of slot 11, and the other coil side is placed at the bottom of slot 15; one coil side of the sixth coil is placed at the top of slot 15, and the other coil side is placed at the bottom of slot 19; One coil side of the seventh coil is placed above slot 19, and the other coil side is placed below slot 23; one coil side of the eighth coil is placed above slot 20, and the other coil side is placed below slot 24; one coil side of the ninth coil is placed above slot 24, and the other coil side is placed below slot 28; one coil side of the tenth coil is placed above slot 28, and the other coil side is placed below slot 32; one coil side of the eleventh coil is placed above slot 29, and the other coil side is placed below slot 33; one coil side of the twelfth coil is placed above slot 33, and the other coil side is placed below slot 1. One coil side of the first coil of the B-phase winding is placed at the top of slot 4, and the other coil side is placed at the bottom of slot 8; one coil side of the second coil is placed at the top of slot 5, and the other coil side is placed at the bottom of slot 9; one coil side of the third coil is placed at the top of slot 9, and the other coil side is placed at the bottom of slot 13; one coil side of the fourth coil is placed at the top of slot 13, and the other coil side is placed at the bottom of slot 17; one coil side of the fifth coil is placed at the top of slot 14, and the other coil side is placed at the bottom of slot 18; one coil side of the sixth coil is placed at the top of slot 18, and the other coil side is placed at the bottom of slot 22; One coil side of the seventh coil is placed above slot 22, and the other coil side is placed below slot 26; one coil side of the eighth coil is placed above slot 23, and the other coil side is placed below slot 27; one coil side of the ninth coil is placed above slot 27, and the other coil side is placed below slot 31; one coil side of the tenth coil is placed above slot 31, and the other coil side is placed below slot 35; one coil side of the eleventh coil is placed above slot 32, and the other coil side is placed below slot 36; one coil side of the twelfth coil is placed above slot 36, and the other coil side is placed below slot 4.One coil side of the first coil of the C-phase winding is placed at the top of slot 34, and the other coil side is placed at the bottom of slot 2; one coil side of the second coil is placed at the top of slot 35, and the other coil side is placed at the bottom of slot 3; one coil side of the third coil is placed at the top of slot 3, and the other coil side is placed at the bottom of slot 7; one coil side of the fourth coil is placed at the top of slot 7, and the other coil side is placed at the bottom of slot 11; one coil side of the fifth coil is placed at the top of slot 8, and the other coil side is placed at the bottom of slot 12; one coil side of the sixth coil is placed at the top of slot 12, and the other coil side is placed at the bottom of slot 16; One coil side of the seventh coil is placed at the top of slot 16, and the other coil side is placed at the bottom of slot 20; one coil side of the eighth coil is placed at the top of slot 17, and the other coil side is placed at the bottom of slot 21; one coil side of the ninth coil is placed at the top of slot 21, and the other coil side is placed at the bottom of slot 25; one coil side of the tenth coil is placed at the top of slot 25, and the other coil side is placed at the bottom of slot 29; one coil side of the eleventh coil is placed at the top of slot 26, and the other coil side is placed at the bottom of slot 30; one coil side of the twelfth coil is placed at the top of slot 30, and the other coil side is placed at the bottom of slot 34.

[0004] It can be seen from this that the existing 36-slot 8-pole three-phase AC permanent magnet synchronous motor armature winding adopts a double-layer stacked winding structure, the coils are arranged neatly, and the end size is relatively short. However, the coil edge of one coil crosses and overlaps with the coil edge of other coils. The wire embedding process is complicated and requires high skills of the operating staff. It is not suitable for machine wire embedding and the operating efficiency is low. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide an AC permanent magnet motor armature winding structure in which the coils are arranged neatly, the end dimensions are relatively short, the coils do not cross or overlap with each other, the wire embedding process is simple, and the wire embedding can be achieved by machine, thereby significantly improving the operating efficiency.

[0006] The technical solution adopted by the present invention to solve the above technical problems is: an AC permanent magnet motor armature winding structure adopts a double-pitch double-layer same-side winding structure, wherein the two coil sides of each coil of the AC permanent magnet motor armature winding are respectively located on the same side of two slots opened in the stator for installing the coils, and the coil side of a coil at the bottom of each slot can be embedded in the slot first, and then the coil side of the other coil at the top of the slot is embedded in the slot. The coil side of any coil is parallel to and overlaps with the coils of other coils, and there is no intersection between the coils.

[0007] The AC permanent magnet motor is a 36-slot 8-pole three-phase AC permanent magnet synchronous motor. Each phase of the AC permanent magnet motor armature winding structure has a total of 12 coils, and the three phases have a total of 36 coils. The winding pitch of the AC permanent magnet motor armature winding structure is a double pitch of 3 and 4. The 36 slots of the 36-slot 8-pole three-phase AC permanent magnet synchronous motor are numbered from 1 to 36; one coil side of the first coil of the A-phase winding is placed below slot 1, and the other coil side is placed below slot 4; one coil side of the second coil is placed below slot 2, and the other coil side is placed below slot 6; one coil side of the third coil is placed below slot 11, and the other coil side is placed below slot 15; one coil side of the fourth coil is placed below slot 11; Place it at the bottom of slot 19, and the other coil side is placed at the bottom of slot 22; one coil side of the fifth coil is placed at the bottom of slot 20, and the other coil side is placed at the bottom of slot 24; one coil side of the sixth coil is placed at the bottom of slot 29, and the other coil side is placed at the bottom of slot 33; one coil side of the seventh coil is placed at the top of slot 2, and the other coil side is placed at the top of slot 6; one coil side of the eighth coil is placed at the top of slot 10, and the other coil side is placed at the top of slot 13; one coil side of the ninth coil is placed at the top of slot 11, and the other coil side is placed at the top of slot 15; one coil side of the tenth coil is placed at the top of slot 20, and the other coil side is placed at slot 24 One coil side of the eleventh coil is placed above slot 28, and the other coil side is placed above slot 31; one coil side of the twelfth coil is placed above slot 29, and the other coil side is placed above slot 33; one coil side of the first coil of the B-phase winding is placed below slot 5, and the other coil side is placed below slot 9; one coil side of the second coil is placed below slot 13, and the other coil side is placed below slot 16; one coil side of the third coil is placed below slot 14, and the other coil side is placed below slot 18; one coil side of the fourth coil is placed below slot 23, and the other coil side is placed below slot 27; one coil side of the fifth coil Place it at the bottom of slot 31, and the other coil side is placed at the bottom of slot 34; the sixth coil is placed at the bottom of slot 32, and the other coil side is placed at the bottom of slot 36; one coil side of the seventh coil is placed at the top of slot 4, and the other coil side is placed at the top of slot 7; one coil side of the eighth coil is placed at the top of slot 5, and the other coil side is placed at the top of slot 9; one coil side of the ninth coil is placed at the top of slot 14, and the other coil side is placed at the top of slot 18; one coil side of the tenth coil is placed at the top of slot 22, and the other coil side is placed at the top of slot 25; one coil side of the eleventh coil is placed at the top of slot 23, and the other coil side is placed at the top of slot 27;The twelfth coil is placed above in slot 32, and the other coil is placed above in slot 36; one coil of the first coil of the C-phase winding is placed below in slot 35, and the other coil is placed below in slot 3; one coil of the second coil is placed below in slot 7, and the other coil is placed below in slot 10; one coil of the third coil is placed below in slot 8, and the other coil is placed below in slot 12; one coil of the fourth coil is placed below in slot 17, and the other coil is placed below in slot 21; one coil of the fifth coil is placed below in slot 25, and the other coil is placed below in slot 28; the sixth coil is placed below in slot 26, and the other coil is placed below in slot 30. One coil side of the seventh coil is placed above slot 34, and the other coil side is placed above slot 1; one coil side of the eighth coil is placed above slot 35, and the other coil side is placed above slot 3; one coil side of the ninth coil is placed above slot 8, and the other coil side is placed above slot 12; one coil side of the tenth coil is placed above slot 16, and the other coil side is placed above slot 19; one coil side of the eleventh coil is placed above slot 17, and the other coil side is placed above slot 21; the twelfth coil is placed above slot 26, and the other coil side is placed above slot 30. In this structure, the first to sixth coils of the A-phase winding, the first to sixth coils of the B-phase winding, and the first to sixth coils of the C-phase winding are simultaneously embedded in the lower part of the corresponding slots; the seventh to twelfth coils of the A-phase winding, the seventh to twelfth coils of the B-phase winding, and the seventh to twelfth coils of the C-phase winding are simultaneously embedded in the upper part of the corresponding slots. It can realize machine embedding, which can greatly improve the operation efficiency.

[0008] Compared with the prior art, the advantage of the present invention lies in that by adopting a double-pitch double-layer same-side winding structure, the two coil sides of each coil of the armature winding of the AC permanent magnet motor are respectively located on the same side of the two slots opened in the stator for installing the coils, and the coil side of a coil at the bottom of each slot can be embedded in the slot first, and then the coil side of the other coil above the slot is embedded in the slot. The coil side of any coil is parallel to and overlapped with the coils of other coils, and there is no intersection between the coils. The use of double pitches can not only make it easier to adjust the number of coil turns and optimize the number of series turns of each phase coil, so that the induced back electromotive force value is in the optimal design range, but also make it easier to optimize the winding coefficient, so that the induced back electromotive force waveform has better sinusoidality, thereby improving the motor performance. Therefore, the present invention has neatly arranged coils and short end sizes, and the coils do not overlap with each other, and the wire embedding process is simple. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1This is a coil distribution diagram of the armature winding of an existing 36-slot 8-pole three-phase AC permanent magnet synchronous motor;

[0010] Figure 2 This is an expanded diagram of the A-phase winding of the armature winding of an existing 36-slot 8-pole three-phase AC permanent magnet synchronous motor;

[0011] Figure 3 This is a coil distribution diagram of the armature winding of the 36-slot, 8-pole, three-phase AC permanent magnet synchronous motor of the present invention;

[0012] Figure 4 This is an expanded view of the A-phase winding of the armature winding of the 36-slot, 8-pole, three-phase AC permanent magnet synchronous motor of the present invention. DETAILED DESCRIPTION

[0013] The present invention will be described in further detail below with reference to the accompanying drawings and embodiments.

[0014] Embodiment: An AC permanent magnet motor armature winding structure adopts a double-pitch double-layer same-side winding structure. The two coil sides of each coil of the AC permanent magnet motor armature winding are respectively located on the same side of two slots opened in the stator for installing the coils. The coil side of a coil at the bottom of each slot can be embedded in the slot first, and then the coil side of another coil at the top of the slot can be embedded in the slot. The coil side of any coil is parallel to and overlaps with the coils of other coils, and there is no intersection between the coils.

[0015] like Figure 3 and Figure 4As shown, in this embodiment, the AC permanent magnet motor is a 36-slot 8-pole three-phase AC permanent magnet synchronous motor, each phase of the AC permanent magnet motor armature winding structure has a total of 12 coils, and the three phases have a total of 36 coils. The winding pitch of the AC permanent magnet motor armature winding structure is a double pitch of 3 and 4, and the 36 slots of the 36-slot 8-pole three-phase AC permanent magnet synchronous motor are numbered according to 1-36; one coil side of the first coil of the A-phase winding is placed at the bottom of slot No. 1, and the other coil side is placed at the bottom of slot No. 4; one coil side of the second coil is placed at the bottom of slot No. 2, and the other coil side is placed at the bottom of slot No. 6; one coil side of the third coil is placed at the bottom of slot No. 11, and the other coil side is placed at the bottom of slot No. 15; one coil side of the fourth coil is placed at the bottom of slot No. 19, and the other coil side is placed at the bottom of slot No. 22; one coil side of the fifth coil is placed at One coil of the sixth coil is placed below slot 29, and the other coil is placed below slot 33; one coil of the seventh coil is placed above slot 2, and the other coil is placed above slot 6; one coil of the eighth coil is placed above slot 10, and the other coil is placed above slot 13; one coil of the ninth coil is placed above slot 11, and the other coil is placed above slot 15; one coil of the tenth coil is placed above slot 20, and the other coil is placed above slot 24; one coil of the eleventh coil is placed above slot 28, and the other coil is placed above slot 31; one coil of the twelfth coil is placed above slot 29, and the other coil is placed above slot 33; One coil side of the first coil of the B-phase winding is placed at the bottom of slot 5, and the other coil side is placed at the bottom of slot 9; one coil side of the second coil is placed at the bottom of slot 13, and the other coil side is placed at the bottom of slot 16; one coil side of the third coil is placed at the bottom of slot 14, and the other coil side is placed at the bottom of slot 18; one coil side of the fourth coil is placed at the bottom of slot 23, and the other coil side is placed at the bottom of slot 27; one coil side of the fifth coil is placed at the bottom of slot 31, and the other coil side is placed at the bottom of slot 34; the sixth coil is placed at the bottom of slot 32. , the other coil side is placed at the bottom of slot 36; one coil side of the seventh coil is placed at the top of slot 4, and the other coil side is placed at the top of slot 7; one coil side of the eighth coil is placed at the top of slot 5, and the other coil side is placed at the top of slot 9; one coil side of the ninth coil is placed at the top of slot 14, and the other coil side is placed at the top of slot 18; one coil side of the tenth coil is placed at the top of slot 22, and the other coil side is placed at the top of slot 25; one coil side of the eleventh coil is placed at the top of slot 23, and the other coil side is placed at the top of slot 27;The twelfth coil is placed above in slot 32, and the other coil is placed above in slot 36; one coil of the first coil of the C phase winding is placed below in slot 35, and the other coil is placed below in slot 3; one coil of the second coil is placed below in slot 7, and the other coil is placed below in slot 10; one coil of the third coil is placed below in slot 8, and the other coil is placed below in slot 12; one coil of the fourth coil is placed below in slot 17, and the other coil is placed below in slot 21; one coil of the fifth coil is placed below in slot 25, and the other coil is placed below in slot 28; the sixth coil is placed below in slot 26, The other coil side is placed at the bottom of slot 30; one coil side of the seventh coil is placed at the top of slot 34, and the other coil side is placed at the top of slot 1; one coil side of the eighth coil is placed at the top of slot 35, and the other coil side is placed at the top of slot 3; one coil side of the ninth coil is placed at the top of slot 8, and the other coil side is placed at the top of slot 12; one coil side of the tenth coil is placed at the top of slot 16, and the other coil side is placed at the top of slot 19; one coil side of the eleventh coil is placed at the top of slot 17, and the other coil side is placed at the top of slot 21; the twelfth coil is placed at the top of slot 26, and the other coil side is placed at the top of slot 30.

Claims

1. An AC permanent magnet motor armature winding structure, characterized in that A double-pitch, double-layer, same-side winding structure is adopted. The two coil sides of each coil of the armature winding of the AC permanent magnet motor are respectively located on the same side of two slots for installing the coils in the stator. The coil side of the lower coil in each slot can be inserted into the slot first, and then the coil side of the other coil in the upper slot can be inserted into the slot. The coil side of any coil is parallel to and overlaps with the coils of other coils, and there is no intersection between the coils. The AC permanent magnet motor is a 36-slot 8-pole three-phase AC permanent magnet synchronous motor. Each phase of the AC permanent magnet motor armature winding structure has a total of 12 coils, and the three phases have a total of 36 coils. The winding pitch of the AC permanent magnet motor armature winding structure is a double pitch of 3 and 4. The 36 slots of the 36-slot 8-pole three-phase AC permanent magnet synchronous motor are numbered according to 1-36; one coil side of the first coil of the A-phase winding is placed below slot No. 1, and the other coil side is placed below slot No. 4; one coil side of the second coil is placed below slot No. 2, and the other coil side is placed below slot No. 6; one coil side of the third coil is placed below slot No. 11, and the other coil side is placed below slot No. 15; one coil side of the fourth coil is placed below slot No. 19, and the other coil side is placed below slot No. 22; one coil side of the fifth coil is placed One coil of the sixth coil is placed below slot 29, and the other coil is placed below slot 33; one coil of the seventh coil is placed above slot 2, and the other coil is placed above slot 6; one coil of the eighth coil is placed above slot 10, and the other coil is placed above slot 13; one coil of the ninth coil is placed above slot 11, and the other coil is placed above slot 15; one coil of the tenth coil is placed above slot 20, and the other coil is placed above slot 24; one coil of the eleventh coil is placed above slot 28, and the other coil is placed above slot 31; one coil of the twelfth coil is placed above slot 29, and the other coil is placed above slot 33; One coil side of the first coil of the B-phase winding is placed at the bottom of slot 5, and the other coil side is placed at the bottom of slot 9; one coil side of the second coil is placed at the bottom of slot 13, and the other coil side is placed at the bottom of slot 16; one coil side of the third coil is placed at the bottom of slot 14, and the other coil side is placed at the bottom of slot 18; one coil side of the fourth coil is placed at the bottom of slot 23, and the other coil side is placed at the bottom of slot 27; one coil side of the fifth coil is placed at the bottom of slot 31, and the other coil side is placed at the bottom of slot 34; the sixth coil is placed at the bottom of slot 32. , the other coil side is placed at the bottom of slot 36; one coil side of the seventh coil is placed at the top of slot 4, and the other coil side is placed at the top of slot 7; one coil side of the eighth coil is placed at the top of slot 5, and the other coil side is placed at the top of slot 9; one coil side of the ninth coil is placed at the top of slot 14, and the other coil side is placed at the top of slot 18; one coil side of the tenth coil is placed at the top of slot 22, and the other coil side is placed at the top of slot 25; one coil side of the eleventh coil is placed at the top of slot 23, and the other coil side is placed at the top of slot 27;The twelfth coil is placed above in slot 32, and the other coil is placed above in slot 36; one coil of the first coil of the C phase winding is placed below in slot 35, and the other coil is placed below in slot 3; one coil of the second coil is placed below in slot 7, and the other coil is placed below in slot 10; one coil of the third coil is placed below in slot 8, and the other coil is placed below in slot 12; one coil of the fourth coil is placed below in slot 17, and the other coil is placed below in slot 21; one coil of the fifth coil is placed below in slot 25, and the other coil is placed below in slot 28; the sixth coil is placed below in slot 26, The other coil side is placed at the bottom of slot 30; one coil side of the seventh coil is placed at the top of slot 34, and the other coil side is placed at the top of slot 1; one coil side of the eighth coil is placed at the top of slot 35, and the other coil side is placed at the top of slot 3; one coil side of the ninth coil is placed at the top of slot 8, and the other coil side is placed at the top of slot 12; one coil side of the tenth coil is placed at the top of slot 16, and the other coil side is placed at the top of slot 19; one coil side of the eleventh coil is placed at the top of slot 17, and the other coil side is placed at the top of slot 21; the twelfth coil is placed at the top of slot 26, and the other coil side is placed at the top of slot 30.

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