SU896722A1

SU896722A1 - Linear induction machine inductor

Info

Publication number: SU896722A1
Application number: SU792890560A
Authority: SU
Inventors: Александр Александрович Дартау; Витольд Александрович Дартау; Владимир Арсентьевич Кожевников
Original assignee: Предприятие П/Я Р-6794
Priority date: 1979-12-24
Filing date: 1979-12-24
Publication date: 1982-01-07

Description

Изобретение относится к линей-’ ным индукционным машинам и может быть использовано в устройствах возвратно-поступательного перемещения.The invention relates to linear induction machines and can be used in reciprocating devices.

Известен индуктор линейной индук- ⁵ционной машины, в котором для компенсации пульсирующих полей, вызванных раэомкнутостью магнитопровода, устанавливается дополнительная система проводников, компенсирующая пуль- ’θ сирующие поля [1 ].Known linear inductor ^{5-translational} induction machine, wherein for compensating pulsating fields caused raeomknutostyu magnetic circuit system is set more conductors compensating pulsations of 'θ siruyuschie Field [1].

Недостатком такого индуктора является увеличение потерь мощности в компенсирующих обмотках без создания дополнительного полезного усилия. 15The disadvantage of this inductor is the increase in power loss in the compensating windings without creating additional useful effort. fifteen

Наиболее близким к предлагаемому является индуктор линейной индукционной машины, содержащий магнитопровод с пазами и трехфазную обмотку, имеющ$о в каждом пазу средней части маг- 20 нитопровода постоянное число проводников и переменное - в концевых частях Г 2 9 .Closest to the proposed one is an inductor of a linear induction machine, containing a magnetic circuit with grooves and a three-phase winding, having a constant number of conductors in each groove of the middle part of the magnetic circuit and a variable number of conductors in the end parts of Г 2 9.

Недбстатком известного индуктора является то, что в нем не устраняет- 25 ся пульсация намагничивающей силы на концах сердечника и пульсация магнитного потока в ярмах, что приводит к ухудшению энергетических показателей и увеличению веса ярма магнитопровода .30A disadvantage of the known inductor is that it does not eliminate the ripple of the magnetizing force at the ends of the core and the ripple of the magnetic flux in yokes, which leads to a deterioration in energy performance and an increase in the weight of the yoke of the magnetic circuit. 30

Цель изобретения - увеличение энергетических показателей и снижение веса индуктора.The purpose of the invention is an increase in energy performance and weight reduction of the inductor.

Поставленная цель достигается тем, что длина концевых частей магнито провода с пазами равна полюсному делению, в каждом принадлежащем данной фазе пазу этих частей уложено ML -АгThe goal is achieved in that the length of the end parts of the magnet wire with the grooves is equal to the pole division, in each phase belonging to this phase, the groove of these parts is laid ML -Ag

- ^cq+l проводников, а по концам магнито провода установлены шунтирующие участ ки без пазов, где W_c- число проводников в пазах средней части, ^-число пазов на полюс и фазу, и - номер паза, принадлежащего данной фазе, считая от края магнитопровода к середине.- ^c q + l conductors, and shunt sections without grooves are installed at the ends of the magnetic wire, where W _c is the number of conductors in the grooves of the middle part, ^ is the number of grooves per pole and phase, and is the number of the groove belonging to this phase, counting from the edges of the magnetic circuit to the middle.

На фиг.1 показан индуктор, продольный разрез) на фиг.2 - распределение относительного числа проводников в пазах индуктора) на фиг.З -8 кривые намагничивающих сил для различных моментов времени на длине магнитопровода индуктора.Figure 1 shows the inductor, a longitudinal section) in figure 2 is the distribution of the relative number of conductors in the grooves of the inductor) in Fig. H-8 the curves of the magnetizing forces for different times on the length of the magnetic circuit of the inductor.

Магнитопровод индуктора состоит из средней части 1, в пазах которой уложено полное число проводников М^., двух концевых частей 2 длиной Т7 с переменным числом проводников в пазах и шунтирующих участков 3.The magnetic circuit of the inductor consists of the middle part 1, in the grooves of which the total number of conductors M ^ is laid, two end parts 2 of length T7 with a variable number of conductors in the grooves and shunt sections 3.

89672 289672 2

На фиг.2 цифрами показано для низа и верха каждого паза долевое содержание числа проводников относительно полного числа проводников в каждом пазу средней части 1 магиитопровода. А, В, С - фазы обмотки индуктора.Figure 2 shows the numbers for the bottom and top of each groove in the fractional content of the number of conductors relative to the total number of conductors in each groove of the middle part 1 of the magnet wire. A, B, C - phase winding of the inductor.

На фиг.З - 8 цифрами обозначены площади полуволн намагничивающих сил, характеризующие собою величину потока через соответствующий· полюс магнитопровода для различных ' моментов времени, соответствующих положениям векторов А, В, С.In Fig. Z - 8, the numbers indicate the half-wave areas of the magnetizing forces, which characterize the magnitude of the flux through the corresponding pole of the magnetic circuit for various' moments of time corresponding to the positions of the vectors A, B, C.

Обмотка индуктора, имеющая распределение по пазам (фиг.1 и 2), конструктивно может быть выполнена в виде катушек с диаметральным шагом, имеющим разное число витков и уложенным в два слоя по высоте паза.The inductor winding having a groove distribution (FIGS. 1 and 2) can be structurally made in the form of coils with a diametrical pitch having a different number of turns and laid in two layers along the groove height.

Кривые (фиг.3-8) показывают, что пульсация намагничивающей силы на концах индуктора отсутствует, а магнитный поток в ярме в этом случае при наличии шунтирукйцих участков, дли· на которых в частном случае равна где Ь. - ширина зубца, t - зуб4 ’ Г цовое деление, Т7- полюсное деление, по сравнению с известным индуктором в два раза меньше.The curves (Figs. 3-8) show that there is no ripple of the magnetizing force at the ends of the inductor, and the magnetic flux in the yoke in this case is in the presence of shunted sections, the length of which in the particular case is equal to where b. - tooth width, t - tooth 4 ’G division, T7-pole division, in comparison with the known inductor is half as much.

Таким образом, на концах индуктора отсутствует пульсация намагничивающей силы, что снижает потери на продольный краевой эффект и повышает энергетические показатели. Уменьше ние потока ярма в два раза позволяет снизить высоту ярма и вес индуктора.Thus, at the ends of the inductor there is no ripple of the magnetizing force, which reduces losses on the longitudinal edge effect and increases energy performance. By halving the yoke flow, the yoke height and inductor weight can be reduced.

Claims

The invention relates to linear induction machines and can be used in devices for backward-displacement. A linear induction machine inductor is known, in which to compensate for pulsating fields caused by an open magnetic circuit, an additional system of conductors is installed to compensate for pulsed fields J. The disadvantage of such an inductor is an increase in power losses in the compensating windings without creating additional useful force. inductor of a linear induction machine, containing a magnetic circuit with-grooves and a three-phase winding, having in each slot a middle parts of the magnetic circuit are a constant number of conductors and variable - in the terminal parts of the xy. The disadvantage of a known inductor is that it does not eliminate the pulsation of the magnetizing force at the ends of the core and the pulsation of the magnetic flux in the arcs, which leads to a deterioration of energy performance and an increase in the weight of the magnetic circuit. The purpose of the invention is to increase the energy performance and reduce the weight of the inductor. The goal is achieved by the fact that the length of the end sections of the magnetic circuit with grooves is equal to pole division, in each groove belonging to the pan phase these parts are laid V /, tCJ. + L conductors, and shunt sections without grooves are installed at the ends of the magnetic core, where Wg is the number of conductors in the slots of the middle part, (J is the number of slots on no.ruoc and phase. And is the number of the slot belonging to this phase, counting from the edge of the magnetic circuit to the middle. Figure 1 shows the inductor, a longitudinal section, in Fig. 2 - the relative distribution the number of conductors in the grooves induk torus; FIGS. 3-8 magnetizing force curves for different times over the length of the inductor magnetic circuit. The inductor magnetic core consists of the middle part 1, in the slots of which the total number of conductors W is laid, two end parts 2 of length T with a variable number of conductors in the slots and shunt sections 3. In FIG. 2, the numerals show for the top and bottom of each groove the fractional content of the number of conductors relative to the total number of conductors in each groove of the middle part 1 of the conduit. A, B, C - phase winding inductor. In FIGS. 3-8, the half-wave areas of the magnetizing forces, characterizing the magnitude of the flux through the corresponding pole of the magnetic circuit for various times, the corresponding positions of the A, B, C vectors, are indicated. The inductor winding has a distribution along the slots (FIG. 1 and 2), it can be constructively made in de coils with a diametric pitch, having a different number of turns and laid in two layers along the height of the groove. The curves (Figures 3-8) show that there is no ripple of the magnetizing force at the ends of the inductor, and the magnetic flux in the frame in this case is in the presence of shunt plots for which in the particular case is equal to: - f, where b is the tooth width, t - tooth K (double division, pole division compared to the known inductor is two times less. Thus, at the end of the inductor there is no pulsation of the magnetizing force, which reduces losses by the longitudinal edge effect and increases the energy indices. two times the em em will reduce frame height and inductor weight. Invention formula Inductor of a linear induction machine, containing a magnetic core with grooves and a three-phase winding, having a constant number of conductors and a variable in each slot of the central part of the magnetic core, with the aim of increasing the energy performance and reduce the weight of the inductor, the length of the end parts of the magnetic circuit with grooves is equal to the pole division, in each groove belonging to this phase these parts are laid VL -Ag PO water workers, and at the ends of the magnetic circuit installed us shunt portions without grooves, where W, - number of conductors in the grooves of the middle part, q - number of slots per pole and phase, n - the slot number of the phase belonging to counting from the edge to the middle of the magnetic circuit. Source of information taken into account during the examination 1. A. Voldek. Induction magnetohydrodynamic machines with liquid metal working fluid. L., Energie, 1970.

2. USSR author's certificate number 118888, cl. H 02 K 3/04, 1959.

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