RU94042556A - Three-phase fractional-slot winding for electrical machines - Google Patents

Three-phase fractional-slot winding for electrical machines

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Publication number
RU94042556A
RU94042556A RU94042556/07A RU94042556A RU94042556A RU 94042556 A RU94042556 A RU 94042556A RU 94042556/07 A RU94042556/07 A RU 94042556/07A RU 94042556 A RU94042556 A RU 94042556A RU 94042556 A RU94042556 A RU 94042556A
Authority
RU
Russia
Prior art keywords
groups
coils
winding
phase
fractional
Prior art date
Application number
RU94042556/07A
Other languages
Russian (ru)
Other versions
RU2091961C1 (en
Inventor
В.И. Попов
Ю.Н. Петров
Original Assignee
Волжский инженерно-педагогический институт
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Волжский инженерно-педагогический институт filed Critical Волжский инженерно-педагогический институт
Priority to RU94042556A priority Critical patent/RU2091961C1/en
Publication of RU94042556A publication Critical patent/RU94042556A/en
Application granted granted Critical
Publication of RU2091961C1 publication Critical patent/RU2091961C1/en

Links

Abstract

FIELD: stator windings of multipole synchronous and induction machines. SUBSTANCE: three-phase fractional-slot (q=12/5) double-layer winding with pole number 2p=10 placed in slots z-72 is built up of uniformly shifted coils with slot pitch ycombined into 6p=30 coil groups numbered 1G through 30G with coils grouped there in row 3, 2, 3, 2, 2 repeated six times. In first phase, it has series-connected groups numbered 1G+(3c)G with even-numbered groups connected differentially to odd-numbered ones; group numbers for two other phases alternate with intervals of 2p=10 and 4p=20 groups. Novelty is that first, second, and third coils in three-coil groups 1G+(5c)G have turn number of (1-x)w, (1+x)w, (1-x)w, respectively; first and second coils of remaining two-coil groups have turn number weach for groups 2G+(5c)G, (1+x)•wand wfor groups 4G+(5c)G, wand (1+x)wfor groups 5G+(5c)G, where y=6; k=0.2, 2,...,(2p-1); c=0, 1, 1,...,(p); 2•wis turn number in each slot; parameter "x" is chosen in the range of 0,20≅ x≅ 0,35.. EFFECT: improved electromagnetic parameters of winding with fractional slots per pole per phase due to increased winding factor and reduced differential dissipation of winding.

Claims (1)

Трехфазная дробная (q = 12/5) обмотка электрических машин относится к обмоткам статора многополюсных электрических машин переменного тока - асинхронных и синхронных. Изобретение позволяет улучшать электромагнитные параметры обмотки с дробным числом пазов на полюс и фазу q = 12/5 путем увеличения обмоточного коэффициента и снижения ее дифференциального рассеяния. Трехфазная дробная (q = 12/5) обмотка электрических машин выполнена двухслойной с числом полюсов 2p = 10 в z = 72 пазах из равномерно смещенных катушек с шагом по пазам Yn, объединенных в 6p = 30 катушечных групп с номерами от 1Г до 30Г при группировке в них катушек по ряду 3 2 3 2 2, повторяемому шесть раз. Содержит в первой фазе последовательно соединенные группы с номерами 1Г + (3к) Г при встречном включении четных групп относительно нечетных, а для двух других фаз их номера чередуются с интервалами в 2p = 10 и 4p = 20 групп. Новым является то, что катушки первая, вторая, третья в трехкатушечных группах 1Г + (5с) Г и 3Г + (5с) Г имеют числа витков соответственно (1 - х)•Wk, (1 + x)•Wk, (1 - x)•Wk,а катушки первая и вторая остальных двухкатушечных групп имеют числа витков по Wk для групп 2Г + (5с) Г, (1 + х)•Wk и Wk для групп 4Г + (5с) Г, Wk и (1 + х)•Wk для групп 5Г + (5с) Г, где Yn = 6; k = 0, 1, 2,..., (2p = 1); c = 0, 1, 2,..., (p); 2•Wk - число витков каждого паза, а значение параметра "x" выбирается в пределах 0,25≅x≅0,35.The three-phase fractional (q = 12/5) winding of electrical machines refers to the stator windings of multi-pole AC electrical machines - asynchronous and synchronous. The invention allows to improve the electromagnetic parameters of a winding with a fractional number of grooves per pole and phase q = 12/5 by increasing the winding coefficient and reducing its differential scattering. The three-phase fractional (q = 12/5) winding of electric machines is made two-layer with the number of poles 2p = 10 in z = 72 grooves from uniformly displaced coils with a pitch along grooves Y n combined in 6p = 30 coil groups with numbers from 1G to 30G at the grouping of coils in them in a row 3 2 3 2 2 repeated six times. It contains in the first phase consecutively connected groups with numbers 1Г + (3к) Г with the opposite inclusion of even groups with respect to odd ones, and for the other two phases their numbers alternate with intervals of 2p = 10 and 4p = 20 groups. New is that the first, second, third coils in the three-coil groups 1Г + (5с) Г and 3Г + (5с) Г have the number of turns, respectively (1 - х) • W k , (1 + x) • W k , ( 1 - x) • W k , and the coils the first and second of the remaining two-coil groups have the number of turns in W k for groups 2Г + (5с) Г, (1 + х) • W k and W k for groups 4Г + (5с) Г , W k and (1 + x) • W k for groups 5Г + (5с) Г, where Y n = 6; k = 0, 1, 2, ..., (2p = 1); c = 0, 1, 2, ..., (p); 2 • W k - the number of turns of each groove, and the value of the parameter "x" is selected within 0.25≅x≅0.35.
RU94042556A 1994-11-29 1994-11-29 Three-phase fractional-slot (q=12/5) electrical machine winding RU2091961C1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
RU94042556A RU2091961C1 (en) 1994-11-29 1994-11-29 Three-phase fractional-slot (q=12/5) electrical machine winding

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
RU94042556A RU2091961C1 (en) 1994-11-29 1994-11-29 Three-phase fractional-slot (q=12/5) electrical machine winding

Publications (2)

Publication Number Publication Date
RU94042556A true RU94042556A (en) 1996-09-20
RU2091961C1 RU2091961C1 (en) 1997-09-27

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
RU94042556A RU2091961C1 (en) 1994-11-29 1994-11-29 Three-phase fractional-slot (q=12/5) electrical machine winding

Country Status (1)

Country Link
RU (1) RU2091961C1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113839497A (en) * 2021-08-26 2021-12-24 天津工业大学 Design method of low-harmonic double-three-phase fractional slot permanent magnet synchronous motor

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2498481C2 (en) * 2009-07-01 2013-11-10 Учреждение Российской академии наук Ордена Трудового Красного Знамени Институт химии силикатов им. И.В. Гребенщикова РАН Six-phase winding of alternating current machine

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113839497A (en) * 2021-08-26 2021-12-24 天津工业大学 Design method of low-harmonic double-three-phase fractional slot permanent magnet synchronous motor
CN113839497B (en) * 2021-08-26 2023-11-21 天津工业大学 Design method of low-harmonic double-three-phase fractional slot permanent magnet synchronous motor

Also Published As

Publication number Publication date
RU2091961C1 (en) 1997-09-27

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