CN114977591A - Novel winding split-phase arrangement and wiring method of motor - Google Patents
Novel winding split-phase arrangement and wiring method of motor Download PDFInfo
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- CN114977591A CN114977591A CN202210290699.4A CN202210290699A CN114977591A CN 114977591 A CN114977591 A CN 114977591A CN 202210290699 A CN202210290699 A CN 202210290699A CN 114977591 A CN114977591 A CN 114977591A
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- 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
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- 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
Abstract
The invention discloses a novel winding split-phase arrangement and wiring method of a motor. Taking 12 coils as an example, a novel winding split-phase arrangement and wiring process is described in detail. The winding split-phase wiring method adopted by the invention simplifies the manufacturing process of the winding, enables the end connection between the coils to be more compact and is convenient for motor assembly. The span of each phase of single coil is an integer slot, the span of each phase is a fractional slot, the corresponding slot distance of the inter-phase coil of the motor is not equal to the slot distance of the inter-phase coil of the motor, the induced electromotive force of the three phases is completely symmetrical, the electromotive force between the phases is different from each other by 120 degrees in electrical angle, and no synthesized electromotive force exists. Finally, comparison simulation is carried out on the common 12-slot 11-pole winding split-phase linear motor and the novel winding split-phase linear motor through Ansoft finite element simulation, induced electromotive force waveforms of the novel winding split-phase linear motor are found to be closer to three-phase symmetry, and the working efficiency of the motor is effectively improved.
Description
Technical Field
The invention belongs to the field of motors, and particularly relates to a novel winding split-phase arrangement and wiring method of a motor.
Background
The linear motor is widely applied to the fields of numerical control machines, electromagnetic ejection, cordless elevators, rail transit and the like due to the advantages of simple structure, high positioning accuracy, high acceleration speed, low noise and the like.
The common winding phase splitting arrangement and wiring method of the existing linear motor is to assist the three-phase winding phase splitting through a slot electromotive force star diagram, and the method is usually used for fractional slot windings with evenly distributed slots. When the method is used for winding and phase splitting, coils of other phases are often doped in a single phase, so that the span of the single-phase coil is far, connecting wires at the end parts are also doped mutually, the loss caused by the heating of a motor is high, the space utilization rate is low, the manufacturing process is complex, the distance between phases and the distance between the phases are inconvenient to adjust to any distance, the distribution between the phases is inflexible, and the efficiency of the motor is low.
Disclosure of Invention
The purpose of the invention is as follows: aiming at the defects or improvement requirements of the prior art, the invention provides a novel winding split-phase arrangement and wiring method of a motor, and aims to provide a new idea: the span of each phase of single coil is an integer slot, and the span between phases is a fractional slot. The method ensures that the slot pitch corresponding to the three-phase inter-coil of the motor is not equal to the slot pitch of the single-phase inner coil, and solves the problems of inflexible distribution of phases and inter-wire, long span of the single-phase inner coil, overlong connecting wire at the end part of the coil and the like in the conventional split-phase arrangement and wiring method. The method has important guiding significance for the winding phase splitting method of the linear motor and the motor design.
The technical scheme is as follows: in order to achieve the purpose, the invention is realized by the following technical scheme:
a novel winding split-phase arrangement and wiring method of a motor is characterized by comprising the following steps:
the method comprises the following steps: taking 12 coils as an example, connecting the 1 st coil and the 2 nd coil in series to form a new coil group which is marked as a first coil group; connecting the 3 rd coil and the 4 th coil in series to form a new coil group which is marked as a second coil group; by analogy, 12 coils are classified to form first to sixth coil groups;
step two: setting a first coil group as an initial phase
The electromotive force generated by the second coil group and the first coil group is 180 DEG apartElectric angle, i.e.
The electromotive forces generated by the third coil group and the first coil group are different by 420 degrees of electric angle, that is to say
The electromotive force generated by the fourth coil group and the first coil group is different by (420 ° +180 °) electric angle, that is
The electromotive force generated by the fifth coil group and the first coil group is different by 840 degrees in electric angle, that is to say
The electromotive force generated by the coil group six and the coil group one is different by (840 + 180) electrical angle, that is
Step three: connecting the first coil group and the second coil group in parallel to be classified into a U phase; the third coil group and the fourth coil group are connected in parallel and return to a V phase; and the parallel connection of the coil group V and the coil group VI is classified into a W phase. The span of each phase of single coil is an integer slot, and the span between phases is a fractional slot, so that the slot pitch corresponding to the three-phase inter-coil of the motor is not equal to the slot pitch of the single-phase inner coil, and the phase splitting is finished.
The novel winding split-phase arrangement and wiring method of the motor is characterized in that in the first step, two adjacent coils are connected in series to form a group to form a new whole, end connecting wires are reduced, loss caused by heating of the motor is reduced, and space utilization rate is improved.
The novel winding split-phase arrangement and wiring method of the motor is characterized in that in the second step, a first coil group is arranged for winding clockwise, and a second coil group is arranged for winding from the opposite direction of the first coil group, namely, anticlockwise; the third and the sixth coil groups are wound in the anticlockwise direction, and the fourth and the fifth coil groups are wound in the clockwise direction.
The novel winding split-phase arrangement and wiring method of the motor is characterized in that in the third step, two adjacent coils are connected in series to form a phase, the arrangement of the coils in a single phase is compact, end connecting wires are greatly reduced, no other coil interval exists between the phases, the coils do not interfere with each other, the coils are integrated, the inter-phase distance can be reasonably adjusted, the inter-phase distance can not be equal to the inter-phase distance, and the inter-phase and inter-phase distribution is more flexible.
The novel winding split-phase arrangement and wiring method of the motor is characterized in that in the third step, after the split-phase is completed, the span of each phase of single coil is an integer slot, the span between phases is a fractional slot, the slot pitch corresponding to the coil between three phases of the motor is not equal to the slot pitch of the coil in the single phase, the induced electromotive forces of the three phases are completely symmetrical, the electromotive forces between the phases are different from each other by 120 degrees in electrical angle, no synthetic electromotive force exists, and the working efficiency of the motor is effectively improved.
The novel winding split-phase arrangement and wiring method of the motor is characterized in that the winding split-phase wiring method is suitable for linear motors with unevenly distributed slot structures or coreless permanent magnet linear synchronous motors with tooth-free slot structures and the like.
The advantages and effects are as follows: compared with the prior art, the invention has the following specific advantages:
1) the coils in single-phase arrange compactly, very big reduction the end connection line, reduce the loss that the motor generated heat and brought, and between the looks, do not have other coil intervals, mutually noninterfere, from an organic whole, can rationally adjust alternate distance, improved space utilization.
2) After phase splitting is finished, the method enables the span of each phase of single coil to be an integer slot, the span between phases is a fractional slot, and the slot pitch corresponding to the inter-three-phase coil of the motor is not equal to the slot pitch of the inter-single-phase coil; the induced electromotive force of the three phases is completely symmetrical, the electromotive force between the phases is different from each other by 120 degrees of electrical angle, and no synthetic electromotive force exists, so that the working efficiency of the motor is effectively improved.
3) The winding becomes wide, the number of turns of the coil can be properly increased, and the output force is increased.
4) The manufacturing process is simplified, and the production cost is saved.
Drawings
FIG. 1 is a conventional 12-slot 11-pole electromotive force star diagram;
FIG. 2 is a diagram of a conventional 12-slot 11-pole two-string parallel split phase connection;
FIG. 3 is a development view of a conventional 12-slot 11-pole winding;
FIG. 4 is an EMF star diagram of the novel winding split phase provided by an embodiment of the present invention;
FIG. 5 is a diagram of two parallel split-phase connection lines for the novel winding split-phase according to the embodiment of the present invention;
FIG. 6 is an expanded view of the winding wiring of the novel winding phase splitting provided by the embodiment of the invention;
FIG. 7 is a waveform diagram of a conventional 12-slot 11-pole induced electromotive force simulation;
fig. 8 is a waveform diagram of induced electromotive force simulation of the novel winding split-phase linear motor according to the embodiment of the present invention.
Detailed Description
In order to more clearly explain the technical contents of the present invention, the detailed description is given herein with reference to the specific embodiments and the accompanying drawings. The examples given are only preferred embodiments of the present invention, and other technical solutions obvious to those skilled in the art from the technical disclosure disclosed still fall within the scope of the present invention.
In the embodiment of the invention, a common slot electromotive force star diagram winding phase splitting method is compared with the novel winding phase splitting method provided by the invention, and the superiority of the novel winding phase splitting method is highlighted. The common winding phase splitting method takes 12 slots and 11 poles of a three-phase winding as an example, and for a fractional slot winding, the number Q of slots of each phase of each pole is Q/(2mp), Q is the number of slots of a motor, m is the number of phases of the motor, and p is the number of pole pairs of the motor, so that the Q is 2/11 at the moment. The electrical angle α (360 × p)/Q is 330 °, and an electromotive force star diagram of 12 slots and 11 poles is drawn by calculating the electrical angle as shown in fig. 1 in the drawings of the specification, and a split-phase arrangement method of a 12 slot and 11 pole motor is known from fig. 1 as follows:
and (4) phase U: 1(+), 2(+), 7(-), 8 (-);
phase V: 3(-), 4(-), 9(+), 10 (+);
phase W: 5(+), 6(+), 11(-), 12 (-).
A single-phase two-string parallel connection mode is selected, a 12-slot 11-pole two-string parallel connection mode obtained according to the phase separation method of the figure 1 is shown in figure 2 in the attached drawings of the specification, wherein the dotted ends represent coil heads, and the non-dotted ends represent coil tails. Referring again to fig. 2, a development of 12-slot 11-pole winding wiring is shown in fig. 3 of the drawings, wherein the coil number "X1" corresponds to the 1 st coil, i.e., "1" in the electromotive force star diagram; the coil number "X2" corresponds to the 2 nd coil, i.e., "2" in the electromotive force star diagram; and so on. As can be seen from fig. 3, the coils of other phases are often doped in a single phase by a common phase splitting method, so that the span of the single-phase coil is relatively long, and the end connecting wires are also doped with each other, which results in relatively high loss caused by heating of the motor, low space utilization, and complex manufacturing process. And the distance between the phases and the distance between the lines are inconvenient to be adjusted to any distance, so that the distribution between the lines and the phases is inflexible, the motor efficiency is low, and the motor is only suitable for motors with grooves distributed at equal intervals.
The invention relates to a novel winding split-phase arrangement and wiring method of a motor, which comprises the following steps:
the method comprises the following steps: similarly, taking 12 coils as an example, connecting the 1 st coil and the 2 nd coil in series to form a new coil group, which is marked as a first coil group; connecting the 3 rd coil and the 4 th coil in series to form a new coil group which is marked as a second coil group; by analogy, 12 coils are classified to form first to sixth coil groups;
step two: setting a first coil group as an initial phase
The electromotive forces generated by the second coil group and the first coil group are different by 180 degrees in electrical angle, i.e.
The electromotive force generated by the third coil group and the first coil group is different by 420 degrees in electrical angle, that is to say
The electromotive forces generated by the fourth coil group and the first coil group are different by (420 ° +180 °) electrical angle, that is
The electromotive force generated by the fifth coil group and the first coil group is different by 840 degrees in electric angle, that is to say
The electromotive force generated by the coil group six and the coil group one is different by (840 + 180) electrical angle, that is
The star diagram of electromotive force of the novel winding split phase is shown in FIG. 4;
step three: connecting the first coil group and the second coil group in parallel and classifying the first coil group and the second coil group into a U phase; the third coil group and the fourth coil group are connected in parallel and return to a V phase; the parallel connection of the coil group V and the coil group VI is classified into a W phase, and the novel winding split-phase arrangement method comprises the following steps:
and (4) phase U: 1(+), 2(+), 3(-), 4 (-);
phase V: 5(-), 6(-), 7(+), 8 (+);
phase W: 9(+), 10(+), 11(-), 12 (-).
This is the end of phase separation. The novel two-string parallel split-phase wiring mode is shown in figure 5 in the attached drawings of the specification, wherein the ends with the letters are used for representing coil heads, and the ends without the letters are used for representing coil tails.
The first coil group is arranged for clockwise winding, and the second coil group is arranged for counter-clockwise winding from the opposite direction of the first coil group; according to the description, a winding wiring development diagram of novel winding split-phase is drawn and is shown in fig. 6 in the attached drawing of the specification, wherein the coil number "X1" in fig. 6 corresponds to the 1 st coil, namely "1" in an electromotive force star diagram; the coil number "X2" corresponds to the 2 nd coil, i.e., "2" in the electromotive force star diagram; in the drawing, the span of each phase of single coil is an integer slot, the span of each phase is a fractional slot, the corresponding slot distance of the three-phase inter-coil of the motor is not equal to the slot distance of the single-phase inner coil, but the three-phase induced electromotive force is completely symmetrical, and the inter-phase electromotive force is different from each other by 120 degrees, namely the electrical angle of A1 is equal to the electrical angle of A2 and is equal to 120 degrees. As can be seen from the graphs in FIGS. 5 and 6, two adjacent coils are connected in series to form a phase, the arrangement of the coils in a single phase is compact, the number of end connecting wires is greatly reduced, the phase-to-phase coils are not separated from other coils and do not interfere with each other, the coils are integrated, the distance between the phases can be reasonably adjusted, the distance between the phases can not be equal to the distance between the lines, and the distribution between the lines and the phases is more flexible. The winding split-phase wiring method is suitable for linear motors with uniformly distributed slot structures, linear motors with non-uniformly distributed slot structures or coreless permanent magnet linear synchronous motors with non-tooth slot structures and the like.
In order to further verify the excellent performance of the novel winding phase-splitting arrangement and wiring method of the motor, the invention carries out comparative simulation on the common 12-slot 11-pole winding phase-splitting linear motor and the novel winding phase-splitting linear motor through Ansoft finite element simulation, and induced electromotive force simulation waveforms of the two motors are respectively shown in figures 7 and 8. As can be seen from comparison between fig. 7 and 8, the induced electromotive force waveform of the novel winding split-phase linear motor is more close to three-phase symmetry, which illustrates that the working efficiency of the motor is effectively improved by the novel winding split-phase arrangement and wiring method.
In conclusion, the novel winding phase-splitting arrangement and connection method basically solves the problems that the span of a single-phase coil is long, end connecting wires are doped with each other, the loss caused by the heating of a motor is high, the space utilization rate is low, the manufacturing process is complex and the like, the span of each phase of single coil of the motor for phase-splitting by using the method is an integer slot, the span of phases is a fractional slot, the slot pitch corresponding to the inter-phase coil of the motor is not equal to the slot pitch of the single-phase inner coil, but the waveform of induced electromotive force is closer to three-phase symmetry, and the working efficiency of the motor is improved.
The above-mentioned embodiments are only preferred embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered as the technical scope of the present invention, and equivalent substitutions or changes according to the technical solution of the present invention and its conception should be covered by the scope of the present invention.
Claims (6)
1. A novel winding split-phase arrangement and wiring method of a motor is characterized by comprising the following steps:
the method comprises the following steps: taking 12 coils as an example, connecting the 1 st coil and the 2 nd coil in series to form a new coil group which is marked as a first coil group; connecting the 3 rd coil and the 4 th coil in series to form a new coil group which is marked as a second coil group; by analogy, 12 coils are classified to form first to sixth coil groups;
step two: setting a first coil group as an initial phase
The electromotive forces generated by the second coil group and the first coil group are different by 180 degrees in electrical angle, i.e.
The electromotive force generated by the third coil group and the first coil group is different by 420 degrees in electrical angle, that is to say
The electromotive forces generated by the fourth coil group and the first coil group are different by (420 ° +180 °) electrical angle, that is
The electromotive force generated by the fifth coil group and the first coil group is different by 840 degrees in electric angle, that is to say
The electromotive force generated by the coil group six and the coil group one is different by (840 + 180) electrical angle, that is
Step three: connecting the first coil group and the second coil group in parallel to be classified into a U phase; the third coil group and the fourth coil group are connected in parallel and return to a V phase; and the parallel connection of the coil group V and the coil group VI is classified into a W phase. The span of each phase of single coil is an integer slot, and the span between phases is a fractional slot, so that the slot pitch corresponding to the three-phase inter-coil of the motor is not equal to the slot pitch of the single-phase inner coil, and the phase splitting is finished.
2. The novel winding split-phase arrangement and connection method of the motor according to claim 1, wherein in the first step, two adjacent coils are connected in series to form a group to form a new whole, so that end connection wires are reduced, loss caused by heating of the motor is reduced, and space utilization rate is improved.
3. The novel winding split-phase arrangement and connection method for the motor as claimed in claim 1, wherein in the second step, the first coil group is wound clockwise, and the second coil group is wound from the opposite direction of the first coil group, that is, counterclockwise; the third and the sixth coil groups are wound in the anticlockwise direction, and the fourth and the fifth coil groups are wound in the clockwise direction.
4. The novel winding split-phase arrangement and connection method of the motor as claimed in claim 1, wherein in the third step, two adjacent coils are connected in series to form a phase, the arrangement of the coils in the single phase is compact, the number of end connection lines is greatly reduced, and no other coil interval exists between the phases, so that the coils do not interfere with each other, and the inter-phase distance can be reasonably adjusted by integrating the coils into a whole, and is not equal to the inter-phase distance, so that the inter-phase and inter-phase distribution is more flexible.
5. The novel winding split-phase arrangement and connection method of the motor as claimed in claim 1, wherein in the third step, after the split-phase is completed, the span of a single coil of each phase is an integer slot, the span of phases is a fractional slot, the slot pitch corresponding to the coil between three phases of the motor is not equal to the slot pitch of the coil in the single phase, and the induced electromotive forces of the three phases are completely symmetrical, and the electromotive forces between the phases differ from each other by 120 degrees in electrical angle, so that no resultant electromotive force exists, and the working efficiency of the motor is effectively improved.
6. The novel winding split-phase arrangement and connection method of the motor according to claim 1, 2, 3 or 4, characterized in that the winding split-phase connection method is suitable for linear motors with unevenly distributed slot structures or coreless permanent magnet linear synchronous motors without tooth slot structures and the like.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210290699.4A CN114977591A (en) | 2022-03-23 | 2022-03-23 | Novel winding split-phase arrangement and wiring method of motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210290699.4A CN114977591A (en) | 2022-03-23 | 2022-03-23 | Novel winding split-phase arrangement and wiring method of motor |
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| Publication Number | Publication Date |
|---|---|
| CN114977591A true CN114977591A (en) | 2022-08-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210290699.4A Pending CN114977591A (en) | 2022-03-23 | 2022-03-23 | Novel winding split-phase arrangement and wiring method of motor |
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| CN (1) | CN114977591A (en) |
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- 2022-03-23 CN CN202210290699.4A patent/CN114977591A/en active Pending
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