CN105356639A

CN105356639A - Common divisor-free odd number slot fractional slot distribution winding

Info

Publication number: CN105356639A
Application number: CN201510909109.1A
Authority: CN
Inventors: 王东立
Original assignee: Individual
Current assignee: Individual
Priority date: 2015-12-11
Filing date: 2015-12-11
Publication date: 2016-02-24
Also published as: CN105978203A; CN106100190A

Abstract

The invention belongs to a three-phase motor winding technology, and belongs to a basic technology of motor technologies. The invention relates to a series of common divisor-free odd number slot fractional slot distribution windings which can be used for a three-phase permanent magnet brushless direct current motor, a three-phase induction motor, a permanent magnet synchronous motor and a three-phase generator and are developed for solving the abovementioned problems. To achieve the purposes of the invention, in total 80 combinations of windings and pole grooves corresponding to the windings that effectively solve the problem of the cogging torque of the permanent magnet brushless direct current motor are designed, and the combinations can maximally reduce the cogging torque of the motor.

Description

Without common divisor odd bin fractional-slot distributed winding

Technical field

The invention belongs to three phase electric machine winding technique, belong to Motor Foundation technology.

Background technology

Motor technology is the basis of modern industrial technology, and winding technique is the basis of motor technology.Existing winding system can not meet the requirement of current high performance motor design, existing winding system is used for permagnetic synchronous motor to be needed skewed slot, tiltedly pole, opens the special process solution cogging torques such as auxiliary tank, add production and processing difficulty, also reduce motor performance and usefulness.This problem has had a lot of motor expert both at home and abroad to carry out demonstration, analysis and research, but the theme of these researchs concentrates on fractional-slot concentratred winding field always, and distributed winding seems to get the brush-off.Developing a kind of winding scheme not needing skewed slot just effectively can eliminate cogging torque, is the best way to solve this problem.

Summary of the invention

The present invention for solving the problem and developing, a series of may be used for three-phase permanent DC brushless motor, three-phase induction motor, permagnetic synchronous motor and threephase generator without common divisor odd bin fractional-slot distributed winding.

For realizing the object of invention, devise totally 80 kinds of pole groove combinations of effectively solving permagnetic synchronous motor cogging torque and correspondingly with it to put in order, these pole grooves combinations can reduce motor cogging torque to greatest extent.

For realizing the object of invention, the winding of the present invention's design is 40 groups long apart from winding (Fig. 1) without common divisor odd bin fractional-slot distributed winding respectively; With 40 groups without common divisor odd bin fractional-slot distributed winding short distance winding (Fig. 2).The common trait of these windings is number of slots is odd number, and number of poles and groove number do not have the common divisor beyond 1, and number of poles and groove number are mutual prime rwmber, and the least common multiple of motor pole number and groove number is both products, and winding coil span is 4.

For realizing the object of invention, solve the equilibrium problem of the back-emf existed without pact odd bin number fractional-slot distributed winding, our method is for each pole groove combines the exclusive coils arrangement order of winding conceptual design, and to be compiled into form be long apart from coils arrangement sequence list (Fig. 1) without common divisor odd bin fractional-slot distributed winding, with without common divisor odd bin fractional-slot distributed winding short distance coils arrangement sequence list (Fig. 2), each pole groove combination winding scheme arranges each phase coil according to the winding order in form, and it is just passable to carry out phase assignments apart by the phase sequence shown in the phase-sequence meter designed (Fig. 3).

Accompanying drawing illustrates:

1. Fig. 1: long apart from coils arrangement sequence list without common divisor odd bin fractional-slot distributed winding

2. Fig. 2: without common divisor odd bin fractional-slot distributed winding short distance coils arrangement sequence list

3. Fig. 3: phase-sequence meter

4 Fig. 4: coil connecting method 1

5. Fig. 5: coil connecting method 2 (power end connection 1)

6 Fig. 6: coil connecting method 3

7. Fig. 7: coil connecting method 4 (power end connection 2)

8. Fig. 8: 57 groove 14 pole motor winding diagrams

Specific embodiment:

Embodiment 1: the present invention is achieved in that the most direct factor of the slot effect size affecting magneto is teeth groove fundamental frequency, and the higher cogging torque of teeth groove fundamental frequency is less, and this is that insider knows altogether.The most direct method improving teeth groove fundamental frequency is exactly the least common multiple adding large number of poles and groove number.The present invention utilizes the method improving teeth groove fundamental frequency, have devised the combination without common divisor odd bin fractional-slot distributed winding and corresponding number of poles and groove number, number of slots is odd number, number of poles and groove number do not have the common divisor beyond 1, number of poles and groove number are mutual prime rwmber, the least common multiple of motor pole number and groove number is both products, and winding coil span is 4.The least common multiple of this winding combination is exactly the product of number of poles and groove number, maximizedly like this improves teeth groove fundamental frequency, effectively reduces cogging torque, and carries out model machine checking.The difficult point maximum without common divisor odd bin fractional-slot distributed winding is that triphasic potential balances, in order to address this problem, by a large amount of mathematical computations, we devise a set of coils arrangement sequence list (Fig. 1), (Fig. 2), and design phase-sequence meter (Fig. 3) corresponding with it, define coil connecting method 1 (Fig. 4), coil connecting method 2 (Fig. 5), coil connecting method 3 (Fig. 6), coil connecting method 4 (Fig. 7).Winding distribution map can be drawn for each winding scheme according to these forms and method of attachment figure.

Embodiment 2: for realizing the object of invention, involved in the present invention is long apart from coils arrangement sequence list (Fig. 1) with without common divisor odd bin fractional-slot distributed winding short distance coils arrangement sequence list (Fig. 2) without common divisor odd bin fractional-slot distributed winding, put in order by sequence number, groove number, number of poles, number of pole-pairs, basis and organize several 5 and form, each sequence number represents a winding pole groove assembled scheme.In form basis put in order with organize several under be divided into again 4 subfields, one group of monogram is had in each hurdle, each monogram is that a basis puts in order, each basis lower correspondence single winding pole groove assembled scheme that puts in order has a numeral, and this numeral is the number of times representing corresponding basic permutation and combination cycle arrangement.

The present invention is achieved in that all winding schemes described in the present invention, is to state with the scheme of the alphabetical order of U, V, W tri-, and this method can make distribution sequence and the logic of the more effective understanding winding of designer.(Fig. 1) in, sequence number 1 correspondence is exactly 57 pole, groove 14 pole grooves combination winding schemes, and wherein basic permutation and combination is " UUWVV ", " UWVV ", " UWWV ", " UUWV " 4 kinds, and the corresponding respectively numeral of basic permutation and combination is 1,4,5,4.Here form implication is such: 1 group " UUWVV ", 4 groups " UWVV ", 5 groups " UWWV ", 4 groups " UUWV ", lines up one whole group of order to be: " UUWVV, UWVV; UWVV, UWVV, UWVV, UWWV, UWWV, UWWV; UWWV, UWWV, UUWV, UUWV, UUWV, UUWV ".Other all schemes in like manner arrange.

Embodiment 3: the present invention realizes like this, analyze relate in (Fig. 1) and (Fig. 2) all to put in order, long putting in order apart from winding 1-9 groove is " UUWVVUWVV ", short distance winding 1-8 groove puts in order and is " UUWVUUWV ", what calculate all windings all meets phase-sequence meter (Fig. 3) apart, design fixing three-phase first winding wiring mode for long apart from winding U, V two phase connection start by (Fig. 5) method, W phase starts by the method for (Fig. 7); Short distance winding U phase connection starts by (Fig. 5) method, and V, W two-phase starts by the method for (Fig. 7) mutually, and the arrow entered is exactly power end.Follow-up winding is corresponding to connecting by 4 mode of connections.

Embodiment 4: the present invention is achieved in that for 57 groove 14 poles motor winding diagram (Fig. 8), (Fig. 8) draws according to the scheme of sequence number 1 in (Fig. 1).By 57 groove 14 pole distribution sequence shown in (Fig. 1), 1 group " UUWVV ", 4 groups " UWVV ", 5 groups " UWWV ", 4 groups " UUWV ", lining up one whole group of order is: " UUWVV, UWVV; UWVV, UWVV, UWVV; UWWV, UWWV, UWWV; UWWV, UWWV, UUWV; UUWV, UUWV, UUWV ".Winding coil schematic diagram is drawn in conjunction with phase-sequence meter (Fig. 3) by above-mentioned winding order, because 57 grooves 14 are very long apart from winding, for long apart from winding U, V two phase connection start by (Fig. 5) method, W phase starts by the method for (Fig. 7), connects all coils successively.

87 groove 11 pole winding distribution sequence are listed as follows according to (Fig. 2):

UUWV，UUWV，UUWV，UUWV，UUWV，UUWV，UUWV，UWWV，UWWV，UWWV，UWWV，UWWV，UWWV，UWWV，UWVV，UWVV，UWVV，UWVV，UWVV，UWVV，UWVV，UWV。As winding diagram need be drawn as stated above.

Principle prototype test has been carried out without common divisor odd number fractional-slot distributed winding designed by the present invention, and obtain associated specialist favorable comment, there is dissemination widely, widely use the aspects such as the waveform quality to generator, harmonic controling and have very large meaning, more can raise the efficiency the magneto promoted at present, improve stability.Effectively can reduce harmonic wave for induction machine, reduce the impact on electrical network.

Claims

1. the present invention is a series of without common divisor odd bin fractional-slot distributed winding, it is characterized in that: be that 80 groups of pole groove arrays are closed and winding corresponding with it order, comprise 40 groups long apart from coils arrangement order (Fig. 1) and 40 groups without common divisor odd bin fractional-slot distributed winding short distance coils arrangement sequentially (Fig. 2) without common divisor odd bin fractional-slot distributed winding.

2. according to claim 1ly to it is characterized in that without common divisor odd bin fractional-slot distributed winding: long apart from coils arrangement order (Fig. 1) and the coils arrangement order clearly describing the groove combination of all poles without common divisor odd bin fractional-slot distributed winding short distance coils arrangement order (Fig. 2) without common divisor odd bin fractional-slot distributed winding.

3. according to claim 1ly to it is characterized in that without common divisor odd bin fractional-slot distributed winding: distributing by (Fig. 3) at a distance of phase place of winding, the coil arrangement order of winding is that the order recorded by (Fig. 1) and (Fig. 2) arranges.