SU655039A1

SU655039A1 - Linear induction motor

Info

Publication number: SU655039A1
Application number: SU772541526A
Authority: SU
Inventors: Всеволод Михайлович Нагорнюк
Original assignee: Донецкий научно-исследовательский институт черной металлургии
Priority date: 1977-11-10
Filing date: 1977-11-10
Publication date: 1979-03-30

Description

II

Изобретение относитс к электротехнике, в частности к электрическим машинам с линейным перемещением подвижной части.The invention relates to electrical engineering, in particular to electric machines with linear movement of the movable part.

Известны линейные асинхронные электродвигатели , содержащие корь в виде пластины и двусторонний индуктор с распределенными обмотками. Однако из-за наличи красного эффекта энергетические показатели такого двигател весьма низки.Known linear asynchronous motors containing measles in the form of a plate and a two-way inductor with distributed windings. However, due to the presence of the red effect, the energy performance of this engine is very low.

Существенным образом краевой эффект в линейных асинхронных двигател х уменьшен в двигател х с поперечным магнитным потоком. Известные линейные асинхронные двигатели с поперечным магнитным потоком содержат корь и двусторонний индуктор , состо щий из П-образных сердечников , средн часть которых размещена между двум крайними част ми, при этом сердечники расположены друг против друга по обе стороны кор и охвачены катушками распределенной обмотки. В этих двигател х замыкание контуров вторичных токов в продольной плоскости кор приводит к снижению коэффициента полезного действи двигате.1 .Significantly, the edge effect in linear asynchronous motors is reduced in transverse magnetic flux motors. Known linear asynchronous motors with transverse magnetic flux contain measles and a two-sided inductor consisting of U-shaped cores, the middle part of which is located between the two extreme parts, while the cores are located opposite each other on both sides of the core and are covered by coils of distributed winding. In these motors, the closure of the circuits of the secondary currents in the longitudinal plane of the core leads to a decrease in the efficiency of the motor.

С целью повышени коэффициента полезного действи , в предлагаемом двигателе средн часть сердечников изогнута так, что крайние части смещены относительно друг друга по иродольиой оси двигател наIn order to increase the efficiency in the proposed engine, the middle part of the cores is bent so that the extreme parts are displaced relative to each other along the irodol axis of the engine

величину шага обмогки, катушки обмотки, относ щиес к разным сторонам индуктора н расположенные одна против другой, включены встречно, а корь выполнен в виде ферромагнитного сердечника, охваченного по всему нернметру поперечного сечени электропроводным слоем. По кра м сердечника кор описываемого двигател могут быть выполнены скошенные прорези.The pitch size, winding coils, located on opposite sides of the inductor and located one against the other, are switched in opposite, and the measles are made in the form of a ferromagnetic core, swept over the entire cross section of the cross section by an electrically conductive layer. Along the edges of the core of the engine described can be made beveled slots.

На чертеже показан описываемый двигатель .The drawing shows the described engine.

Двигатель состоит из двух частей индуктора 1 и 2, расположенных по обе стороны кор 3. Кажда часть индуктора, в своюThe engine consists of two parts of inductor 1 and 2, located on both sides of the core 3. Each part of the inductor, in its

очередь, содержит р д П-образных сердечников 4, средн часть 5 которых изогнута так, что крайние части 6 и 7 смещены относительно друг друга на величину шага обмотки, состо щей из катушек 8. Катушкн 8 обмоток разных частей индуктора, расположенные против друг друга, включены встречно.the queue contains a series of U-shaped cores 4, the middle part 5 of which is bent so that the outer parts 6 and 7 are offset relative to each other by the magnitude of the winding pitch consisting of coils 8. The coil 8 windings of different parts of the inductor opposite each other , included counter.

Claims

The armature 3 of the engine consists of a ferromagnetic core 9 and an electrically conductive layer 10 enclosing it. On the core 9 there are beveled slots I. The cores 4 and 9 can be made of laminate, as indicated in the drawing. The engine works as follows. When a voltage is applied to a distributed winding through coils 8, a current will form that produces a magnetic note Φ, closing along cores 4, as indicated in the drawing. The flow passing through the core 9 core in the longitudinal direction will induce secondary currents in the electrically conductive layer 10, which will be closed along the cross-sectional contour of the layer 10. These currents, interacting with the fluxes of the cores with coils related to other phases of the winding, will create electromagnetic forces leading to the movement of the core 3 in the longitudinal direction. The slits 11 reduce eddy currents in the core 9. Due to the fact that the secondary current contours are located around the perimeter of the cross section of the electrically conductive layer, the losses in the frontal parts of the winding of the core are significantly reduced, which leads to an increase in efficiency, which secondary currents are closed in the longitudinal plane. Claim 1. A linear asynchronous motor containing measles and a two-sided inductor consisting of U-shaped cores, the middle part of which is located between two parallel extreme parts located opposite each other on both sides of the core and covered by coils of a distributed winding that differs in that, in order to increase efficiency, the middle part of the cores is bent so that the extreme parts are displaced one relative to another along the longitudinal axis of the motor by the size of the winding pitch, the coil winding, related to p znym sides of the inductor and arranged one against the other, are included counter, and the armature is formed as a ferromagnetic core, covered the entire perimeter of the cross-section of the conductive layer.

2. An electric motor according to Claim 1, characterized in that the bevel slots are made on the core of the core along the edges.

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