UA69964A - Device for transfer of electromagnetic energy to contactless electric locomotive (variants) - Google Patents

Abstract

A device for transfer of electromagnetic energy to a contactless electric locomotive consists of the coils of tractive network and an energy receiver, the number of sections of which is even and not less than four. The coils of tractive network have a form of rectangles, which are formed of direct and reverse cables of network. The axes of coils ofnetwork and turns of windings of the sections of energy receiver are oriented perpendicularly with the direction of the motion of electric locomotive. In the first variant - the turns of windings of adjacent pairs of sections are mutually displaced in the direction of motion of electric locomotive for a half of length of identical coils of network as for the size. In the second variant - the length of coils along the network is different. In the third variant - the winding of energy receiver is connected with the help of rectifier with capacitive storage of energy.

Description

Description of the invention

The invention relates to transport with non-contact energy transfer to an electric locomotive by means of an electromagnetic field 2, which is used in coal mines, which are explosive due to gas and dust.

A known device for transmitting electrical energy to a contactless electric locomotive | Gransport with inductive power transmission for coal mines. Ed. H.G. Pivnyaka. - M.: Nedra, 1990. - 245 p.), which has a traction network of two rectilinear cables - direct and reverse, and an energy receiver, in the grooves of which a single-section winding is placed. The disadvantage of such a device is the low mutual inductance between the traction network and the winding 70 of the energy receiver and the possibility of a significant electromotive force (EMF) in external circuits of the environment, which can lead to the appearance of intrinsically safe currents in these circuits.

The closest in technical essence to the proposed invention is the device (AS USSR 452526, kl. V bOt 3/04, V bot 7/00. Device for transmitting electrical energy to a contactless electric locomotive. Volotkovsky

S.A., Pivniak H.G., Svistelnyk O.A. et al., B.I., Mo45, 1974), in which the traction network is made of 12 spatially distributed coils wound on an insulating core and connected to each other in series-opposite fashion. The energy receiver has two parallel sections, in the grooves of the magnet wire, the turns of the windings are placed in a plane perpendicular to the plane of the coils of the traction network. The turns of the section windings are connected in series-opposite fashion.

The disadvantages of such a device are: 1) insufficient mutual inductance between the traction network and the winding of the energy receiver, which is explained by the significant length of the magnetic power lines; 2) the complexity of the traction network design; 3) significant height of the energy receiver due to the need to place the section winding turns in a plane perpendicular to the plane of the coils of the traction network; 4) an increase in the consumption of conductor material for inter-coil connections in the traction network; 5) the number of energy receiver sections is insufficient to ensure safety and reliable operation.

The basis of the invention is the task of improving the device for transmitting electromagnetic energy 22 to a contactless electric locomotive, in which, by means of a different design of the traction network and energy receiver and their different arrangement, an increase in the mutual inductance between the traction network and the energy receiver is ensured while simplifying the network design, and due to this, more effective transmission is ensured of electromagnetic energy to the electric locomotive, reducing costs and increasing the reliability of the electric locomotive. M 30 In the first version, the task is solved by the fact that in a known device for transmitting energy Ge) to a contactless electric locomotive, which consists of spatially distributed, interconnected coils of the traction network and an energy receiver with separate sections, the turns of the windings of which are connected between according to the invention, the coils of the traction network are formed from the forward and reverse cables of the network, each in the shape of a rectangle, and in terms of length, all the coils are made the same, and the axes of the coils of the network and the turns of the windings of the energy receiver sections are oriented perpendicular to the direction electric locomotive movement. The number of sections of the energy receiver is taken as even, not less than four, and the turns of the windings of adjacent pairs of sections are mutually offset in the direction of movement of the electric locomotive by half the length of the network coil.

In the second variant, the task is solved by the fact that in the known device for transmitting energy "a non-contact electric locomotive, which consists of spatially distributed, interconnected coils of the Z 40 traction network and an energy receiver with separate sections, the windings of which are interconnected c series-opposite, according to the invention, the coils of the traction network are formed from the forward and reverse cables of the network, each in the shape of a rectangle, and the length of the coils along the network is made different, and the axes of the network coils and turns of the section windings are oriented perpendicular to the direction of movement of the electric locomotive. The number of power receiver sections is even, not less than four. 45 In the third version, the task is solved by the fact that in a known device for transmitting energy to a contactless electric locomotive, which includes spatially distributed, interconnected coils (se) of the traction network and an energy receiver with separate sections, the windings of which are connected According to the invention, the coils of the traction network are formed from the forward and reverse cables of the network, each in the shape of a rectangle, and all coils are identical in length, and the axes of the coils b 20 of the network and the turns of the windings of the energy receiver sections are oriented perpendicular to the direction of movement electric locomotive The number of power receiver sections is even, not less than four, and the power receiver winding is connected

T" through a rectifier with a capacitive energy storage.

Figure 1 shows a top view of the traction network and energy receiver for the first version of the device. Fig. 2 and Fig. 3 show the longitudinal and transverse sections of the device according to the first variant. Fig. 4 shows a top view of the traction network and energy receiver for the second version of the device, Fig. 5 shows a longitudinal section of the device according to the second option. Figure b shows a top view of the traction network and energy receiver for the third version of the device.

The arrows in Fig. 1, Fig. 4, Fig. b and the corresponding icons in Fig. 2, Fig. 3, Fig. 5 indicate the relative direction of the current in the traction network. In Fig. 1, Fig. 4, Fig. b, the direction of action 60 of the magnetic flux of the traction network is shown by the corresponding icons. In Fig. 2 and Fig. 5, dashed rounded lines indicate magnetic flux lines from the transverse parts of the coils, and arrows indicate the direction of action of the magnetic flux from the longitudinal parts of the network coils. Figure 3 shows the magnetic lines of force of the flow from the longitudinal parts of the coils of the network with dotted rounded lines.

The device for transmitting electromagnetic energy to a non-contact electric locomotive according to the first variant has a traction network (Fig. 1) made of rectangular coils 1, formed accordingly from the direct 2 and return cables of the network. The length of B, all coils are the same. Network coils can be single-turn or multi-turn. Figure 1 shows single-turn coils.

The power receiver (Fig. 1, bottom; Fig. 2) along its length consists of two pairs of sections 4 and 5, each of which has a magnetic conductor b made of ferrite. The turns of the windings 8 are placed in the grooves 7 of the magnetic conductors of the sections, and the turns of the windings of the adjacent sections are connected to each other in a series-opposite manner (in Fig. 1, Fig. 4, Fig. b, one turn of the windings of the sections is shown). The connected windings of the sections make up the winding of the energy receiver.

The axes of the coils of the traction network and the axes of the turns of the windings of the energy receiver sections are mutually oriented parallel and perpendicular to the direction of movement of the electric locomotive. 70 Pairs 4 and 5 of sections of the power receiver (Fig. 1 and Fig. 2) have combined magnetic conductors 6, which are mutually offset in the direction of movement of the electric locomotive in such a way as to ensure displacement of the turns of the windings of the pairs of sections by half the length of B, the coil of the traction network.

Magnetic conductors 6 of pairs 4 and 5 of power receiver sections (Fig. 2 and Fig. 3) are equipped with pole tips 9, which help to increase the magnetic flux covering the windings of the sections.

The longitudinal and transverse dimensions of the coils of the traction network are made to coincide with the distances between the middle of the slots 10 of the magnetic conductors 6.

The device for transmitting electromagnetic energy according to the second variant has a traction network (Fig. 4) of rectangular coils 1, length B, which are made variable. Fig. 4 shows single-turn coils, length B, which are different along the network, the ratio of the lengths of neighboring coils is 1.5.

The energy receiver (Fig. 4 and Fig. 5) consists of four sections along the length, which have a combined magnet wire b. In the grooves 7 of the magnetic circuit, the turns of the 8 windings of the sections are placed. There is no displacement of adjacent pairs of sections.

The longitudinal sides of the coils 1 of the network are oriented along the middle of the corresponding slots 10 of the magnet wire 6. The axes of the coils of the traction network and the axes of the turns of the windings of the power receiver sections are oriented perpendicular to the direction of movement of the electric locomotive.

The device for transmitting electromagnetic energy according to the third variant has a traction network (fig. b6) made of rectangular coils 1, the lengths of which B are identical. The energy receiver (fig. b) consists along its length of four sections having a combined magnet wire 6. The turns of the 8 windings of the sections are placed in the grooves 7 of the magnet wire 6. There is no displacement of adjacent pairs of magnet wire sections. The longitudinal and transverse dimensions of the coils of the traction network are made in such a way that they coincide with the distances between the middle of the slots 10 of the magnetic conductor "g zo 6.

The turns of the windings of the energy receiver sections are connected to each other in series-opposite and form the winding of the energy receiver, which is connected through a rectifier to a capacitive energy storage. Energy from the latter feeds Ge! electric locomotive engines.

The device for transmitting electromagnetic energy (the first variant) works as follows. me)

When the traction network is connected to a source of high-frequency alternating current, an alternating magnetic flux occurs in each of its coils, and in neighboring coils, the spatial orientation of the flux is mutually opposite at each moment of time. The magnetic flux of each coil of the network covers through the pole tips 9 and the rest of the magnetic conductor 6 the turns 8 of the windings of the power receiver sections and causes an electromotive force (EMF) in them. The direction of action of EMF of neighboring sections is opposite, which is determined by the orientation of the magnetic flux of the coils of the network, therefore, to obtain the arithmetic sum of the EMF of the section, their windings are connected in series-opposite fashion. With the relative position of the coils of the traction network and the sections of the energy receiver, shown in Fig. 1, Fig. 2 and Fig. 3, the turns of the windings of 8 pairs of 4 sections are permeated by the maximum magnetic flux and a corresponding EMF arises in them. ;" At the same time, the turns of the windings of a pair of 5 sections are in the area of action of magnetic fluxes opposite in direction, therefore

The EMF arising in them is close to zero.

When the electric locomotive moves, the magnetic flux penetrating the turns of the windings of a pair of 4 sections decreases. Simultaneously

Ge" increases the magnetic flux penetrating the turns of the windings of a pair of 5 sections. Due to the series-opposite connection of the turns of the winding of all sections, the EMF at the output of the power receiver remains unchanged in amplitude at any position of the power receiver relative to the traction network. In the second version of the device with mutual

Ge) the position of the coils of the traction network and sections of the energy receiver, shown in Fig. 4 and Fig. 5, the turns of the windings of the first 5r of the two sections permeate the maximum possible magnetic flux and therefore a corresponding EMF arises in them. At the same time

Me. the turns of the windings of the last two sections penetrate two identical magnetic fluxes, opposite in direction. Therefore, in the turns of these sections, the total emf is close to zero.

When the electric locomotive moves, the magnetic flux penetrating the turns of the windings of the first two sections (Fig. 4 and Fig. 5) decreases. At the same time, the magnetic flux that penetrates the turns of the windings of the last two sections of the power receiver increases. At the same time, the total EMF at the output of the energy receiver changes slightly in level, but never reaches zero (with the ratio of the lengths of the sides of the coils shown in Fig. 1, the minimum EMF value is

P" 0.6 from the maximum).

In the third version of the proposed device, at the initial moment when the axes of the coils 1 of the traction network and the axes of the turns 8 of the windings of the energy receiver sections (fig. b) coincide, the maximum possible magnetic flux permeates the windings of the sections. At the output of the winding of the energy receiver, which consists of the windings of individual sections, a corresponding emf occurs, which causes the accumulation of electrical energy in the capacitive storage device installed on the electric locomotive. When enough energy is accumulated for the engines to work, the electric locomotive starts moving. When the electric locomotive is moved relative to the initial position by half the width of the coils of the network, the turns of the windings of each section of the energy receiver penetrate two magnetic fluxes of the same level and opposite in direction. In this case, the EMF at the output of the energy receiver winding is close to zero, but the electric locomotive will move thanks to the energy stored in the storage capacitors.

During the further movement of the electric locomotive, the position of the turns of the windings of the power receiver sections changes relative to the coils of the traction network, and at the output of the power receiver winding, an EMF that feeds the accumulator again occurs. Thus, continuous movement of the electric locomotive is ensured.

Due to the orientation of the axes of the coils of the traction network and the turns of the windings of the power receiver sections perpendicular to the direction of movement of the electric locomotive, the length of the magnetic lines of force of the mutual induction flow of the traction network is reduced, which leads to an increase in the mutual inductance of the latter with the windings of the power receiver sections and a decrease in the height of the power receiver compared to the prototype.

The creation of coils of the traction network rectangular, appropriately formed from the direct and reverse 70 network cables, simplifies the design of the coils and the process of their manufacture, and also eliminates the cost of conductor material for inter-coil connections. In addition, the proposed construction of the traction network in the case of multi-turn coils makes it possible to connect the turns of the coils in series or in parallel.

Selecting the number of power receiver sections in pairs reduces the pulsation of the EMF level in the power receiver winding.

Due to the fact that the power receiver has at least four sections, its /5 mutual inductance with the traction network increases due to the action of a larger number of transverse sides of the network coils.

Also, at the same time, the EMF that occurs in extraneous circuits decreases, which increases the safety level of the contactless electric locomotive. In addition, the reliability of the operation of the electric locomotive increases, because if any section is damaged, the operation of the electric locomotive will be ensured by the remaining sections of the power receiver. nt -8 : pl pen 7 nshshshsh | I'm still my aunt

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Claims (2)

The formula of the invention b5 1. A device for transmitting electromagnetic energy to a non-contact electric locomotive, which consists of spatially distributed, interconnected coils of the traction network and an energy receiver from separate sections, the windings of which are connected to each other in a series-opposite manner, which differs in that the coils of the traction network networks are formed from forward and reverse network cables, each in the shape of a rectangle, and the length of the coils are identical, and the axes of the coils and windings of the energy receiver sections are oriented perpendicular to the direction of movement of the electric locomotive; the number of sections of the energy receiver is taken as even, not less than four, and the turns of the windings of adjacent pairs of sections are made mutually offset in the direction of movement of the electric locomotive by half the length of the network coil. 2. A device for transmitting electromagnetic energy to a non-contact electric locomotive, which includes spatially distributed, interconnected coils of the traction network and an energy receiver from separate sections, the turns of 70 windings of which are connected in series-opposite fashion, which is characterized by the fact that the coils the traction network is formed from the forward and reverse cables of the network, each in the shape of a rectangle, and the length of the coils along the network is different; the axes of the coils of the network and the turns of the windings of the energy receiver sections are oriented perpendicular to the direction of movement of the electric locomotive, and the number of energy receiver sections is taken to be even, not less than four. C. A device for transmitting electromagnetic energy to a non-contact electric locomotive, which consists of spatially distributed, interconnected coils of the traction network and an energy receiver from separate sections, the windings of which are connected to each other in a series-opposite manner, which is distinguished by the fact that the coils of the traction network networks are formed from forward and reverse network cables, each in the shape of a rectangle, and the coils are made the same in length; the axes of the coils of the network and the turns of the windings of the energy receiver sections are oriented 2o perpendicular to the direction of movement of the electric locomotive; the number of sections of the energy receiver is taken to be at least four, and the winding of the energy receiver is connected by means of a rectifier to a capacitive energy storage. Official bulletin "Industrial Property". Book 1 "Inventions, useful models, topographies of integrated microcircuits", 2004, M 9, 15.09.2004. State Department of Intellectual Property of the Ministry of Education and Science of Ukraine. « « (Se) (o) (o) (Se) - and? (o) se) se) (o) s» 60 b5