Motor coil winding method and low-frequency self-resonance coil winding

Abstract

The invention belongs to the technical field of generator and motor manufacturing, and particularly relates to a motor coil winding method and a low-frequency self-resonance coil winding. A same-direction vortex laminated winding method is adopted, a wire is fixed at a starting point, N circles of vortex winding are carried out, a first layer of a coil is formed through winding, then the distance of the single-strand wire diameter is translated, the first layer of the coil is attached, N circles of vortex winding are carried out, the first layer of the coil is overlaid, a second layer of the coil is formed through winding, then the distance of the single-strand wire diameter is translated, the second layer of the coil is attached, and N circles of vortex winding are carried out. And the third layer which is overlapped on the second layer and wound into the coil is wound into the fourth layer, the fifth layer to the Mth layer according to the same rule. The layers of the finished coil are connected in series and are stacked into a whole layer by layer. By improving the winding mode of the motor coil, the problems of large eddy-current loss and coil heating of the motor winding are solved, and the effects of a generator and a motor are greatly improved.

Description

Technical Field

[0001] The invention belongs to the technical field of generator and motor manufacturing, and in particular relates to a motor coil winding method and a low-frequency self-resonant coil winding. Background Art

[0002] The magnetic pole coils of traditional motors are mostly wound in spiral reciprocating or cluster winding, and there has been no improvement for many years. In recent years, the motor coil winding technology of "U-shaped hairpin" installation has appeared on the market, but the problem of magnetic eddy current loss of the winding is still serious, and there has been no major technological breakthrough for many years.

[0003] The eddy current loss of the motor winding is large, and the coil heating problem is serious, which greatly limits the effectiveness of the generator and motor. In order to improve the power generation efficiency of the generator, the coil winding technology urgently needs to be further improved. Summary of the invention

[0004] In view of the various deficiencies in the prior art, the inventors have researched and designed a motor coil winding method and a low-frequency self-resonant coil winding in long-term practice. By improving the winding method of the motor coil, the problems of large eddy current loss and coil heating of the motor winding are improved, and the efficiency of the generator and motor is greatly improved.

[0005] A motor coil winding method of the present invention is a same-direction vortex stacking winding method, specifically: fixing the wire at the starting point, vortex winding N turns to form the first layer of the coil, then translating the distance of the single wire diameter to fit the first layer of the coil, vortex winding N turns, superimposed on the first layer, to form the second layer of the coil, then translating the distance of the single wire diameter to fit the second layer of the coil, vortex winding N turns, superimposed on the second layer, to form the third layer of the coil, and winding the fourth layer, the fifth layer and up to the Mth layer in the same rule.

[0006] The layers of the finished coil are connected in series and stacked together. When current flows through the coil, the magnetic field direction of each winding layer is the same according to the right-hand screw rule.

[0007] A low-frequency self-resonant coil winding of the present invention is wound into a coil with two or more layers by the above-mentioned motor coil winding method, and the coil belongs to the low-frequency self-resonant coil of the generator. The low-frequency self-resonant coil is installed on the motor in series, parallel or series-parallel mixed connection to form the low-frequency self-resonant coil winding.

[0008] The beneficial effects of the present invention are:

[0009] The low-frequency self-resonant coil winding wound by the motor coil winding method of the present invention can be used in a generator to multiply the efficiency of converting mechanical energy into electrical energy, and can be used in a motor to significantly improve the efficiency of converting electrical energy into mechanical energy. Therefore, the application of the low-frequency self-resonant coil winding of the present invention can greatly save energy consumption and greatly improve economic benefits. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a schematic structural diagram of a low-frequency self-resonant coil according to one embodiment of the present invention.

[0011] Figure 2 This is a local enlarged schematic diagram of point A.

[0012] In the accompanying drawings: 1-the first layer of coil, 2-the second layer of coil, 3-the third layer of coil, 4-the fourth layer of coil, 5-the fifth layer of coil, 6-the sixth layer of coil, 7-the seventh layer of coil, 11-the starting fixed point of the first layer of coil, 12-the end point of the first layer of coil, 21-the end point of the second layer of coil, 31-the end point of the third layer of coil, 41-the end point of the fourth layer of coil, 51-the end point of the fifth layer of coil, 61-the end point of the sixth layer of coil, 71-the end point of the seventh layer of coil. DETAILED DESCRIPTION

[0013] The present invention will be further described in detail below in conjunction with the accompanying drawings and implementation examples. These implementation examples are described in sufficient detail so that those skilled in the art can understand and practice the present invention. Without departing from the spirit and scope of the present invention, logical, achievable and other changes may be made to the implementation. Therefore, the following detailed description should not be construed as limiting, and the scope of the present invention is limited only by the claims.

[0014] In view of the current problems of large eddy current loss and coil heating in motor windings, the present invention proposes a motor coil winding method, which is a co-directional vortex stacking winding method. The specific method is as follows:

[0015] Fix the wire at the starting point, vortex wind N turns to form the first layer of the coil, then translate the single wire diameter to fit the first layer of the coil, vortex wind N turns, overlap on the first layer to form the second layer of the coil, then translate the single wire diameter to fit the second layer of the coil, vortex wind N turns, overlap on the second layer to form the third layer of the coil, and follow the same rules to wind the fourth, fifth, and up to the Mth layer.

[0016] The layers of the finished coil are connected in series and stacked together. When current flows through the coil, the magnetic field direction of each winding layer is the same according to the right-hand screw rule.

[0017] The present invention also provides a low-frequency self-resonant coil winding, which is wound into a coil with two or more layers by the above motor coil winding method, and the coil belongs to the low-frequency self-resonant coil of the generator. The low-frequency self-resonant coil is installed on the motor in series, parallel or series-parallel mixed connection to form the low-frequency self-resonant coil winding.

[0018] See also Figure 1 and Figure 2 The present invention provides an implementation of a low-frequency self-resonant coil winding, the low-frequency self-resonant coil includes 7 layers of winding wire, the winding starts from the coil first layer starting fixed point 11 of the coil first layer 1, and after winding N turns, the coil first layer tail point 12 is located at the outermost end of the coil first layer 1. The coil first layer starting fixed point 11 is also the starting point of the coil.

[0019] After the first layer 1 of the coil is wound, the single-strand wire diameter is translated to fit the first layer 1 of the coil, and N turns are vortex-wound and superimposed on the first layer of the coil to form the second layer 2 of the coil. The tail point 21 of the second layer of the coil is located at the outermost end of the second layer 2 of the coil.

[0020] After the second layer 2 of the coil is wound, the single-strand wire diameter is translated to fit the second layer 2 of the coil, and N turns are vortex-wound and superimposed on the second layer of the coil to form the third layer 3 of the coil. The tail point 31 of the third layer of the coil is located at the outermost end of the third layer 3 of the coil.

[0021] After the third layer 3 of the coil is wound, the single-strand wire diameter is translated to fit the third layer 3 of the coil, and N turns are vortex-wound and superimposed on the third layer of the coil to form the fourth layer 4 of the coil. The tail point 41 of the fourth layer of the coil is located at the outermost end of the fourth layer 4 of the coil.

[0022] After the fourth layer 4 of the coil is wound, the single-strand wire diameter is translated to fit the fourth layer 4 of the coil, and N turns are vortex-wound and superimposed on the fourth layer of the coil to form the fifth layer 5 of the coil, and the tail point 51 of the fifth layer of the coil is located at the outermost end of the fifth layer 5 of the coil.

[0023] After the fifth layer 5 of the coil is wound, the single-strand wire diameter is translated to fit the fifth layer 5 of the coil, and N turns are vortex-wound and superimposed on the fifth layer of the coil to form the sixth layer 6 of the coil. The tail point 61 of the sixth layer of the coil is located at the outermost end of the sixth layer 6 of the coil.

[0024] After the sixth layer 6 of the coil is wound, the distance of the single-strand wire diameter is translated to fit the sixth layer 6 of the coil, and N turns of vortex winding are performed, and the coil is superimposed on the sixth layer of the coil to form the seventh layer 7 of the coil, and the tail point 71 of the seventh layer of the coil is located at the outermost end of the seventh layer of the coil 7. The tail point 71 of the seventh layer of the coil is also the tail point of the coil.

[0025] The finished coil layers are stacked and connected in series, and the layers are bonded and fixed with a dielectric adhesive. When current flows through the coil, the magnetic field direction of each winding layer measured according to the right-hand screw rule is the same.

[0026] The "permanent magnet magnetic force derivation type generator" using the motor coil winding method and low-frequency self-resonant coil winding involved in the present invention as the stator coil winding has an efficiency of converting mechanical energy into electrical energy greater than 0.85 under non-resonant conditions; and an efficiency of converting mechanical energy into electrical energy greater than 0.98 under resonant conditions.

[0027] The permanent magnet generator using the motor coil winding method and the low-frequency self-resonant coil winding transformation disclosed in the present invention can improve the efficiency of converting mechanical energy into electrical energy by more than 5% compared with the conventional spiral reciprocating winding or cluster winding stator coil winding.

[0028] In the excitation generator using the motor coil winding method and low-frequency self-resonant coil winding transformation disclosed in the present invention, both the stator coil and the excitation coil are transformed using the technology disclosed in the present invention. Compared with the traditional spiral reciprocating winding or cluster winding stator coil winding, the efficiency of converting mechanical energy into electrical energy is improved by more than 3%.

[0029] The DC permanent magnet motor modified by the motor coil winding method and the low-frequency self-resonant coil winding according to the present invention can improve the efficiency of converting electric energy into mechanical energy by more than 2% compared with the stator coil winding of spiral reciprocating winding or cluster winding.

[0030] The present invention has been described in detail above. The above description is only a preferred embodiment of the present invention and should not limit the scope of implementation of the present invention. That is, all equivalent changes and modifications made within the scope of this application should still fall within the scope of the present invention.

Claims

1. A method for winding a motor coil, characterized in that: It is a co-directional vortex stacking winding method, specifically: Fix the wire at the starting point, vortex wind N turns to form the first layer of the coil, then translate the distance of the single wire diameter to fit the first layer of the coil, vortex wind N turns, overlap on the first layer to form the second layer of the coil, then translate the distance of the single wire diameter to fit the second layer of the coil, vortex wind N turns, overlap on the second layer to form the third layer of the coil, and follow the same rules to wind the fourth layer, the fifth layer, and up to the Mth layer; The layers of the finished coil are connected in series and stacked together; when current flows through the coil, the direction of the magnetic field of each winding layer measured according to the right-hand screw rule is the same.

2. A low frequency self-resonant coil winding, characterized in that: The motor coil winding method according to claim 1 is used to wind a coil having two or more layers, and the coil belongs to a low-frequency self-resonant coil of a generator; the low-frequency self-resonant coil is installed on the motor in series, in parallel, or in a series-parallel mixed manner to form the low-frequency self-resonant coil winding.

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