UA80963C2 - Energy-receiver of noncontact electric locomotive - Google Patents

Abstract

The invention concerns electrical equipment of transportation means, in which a noncontact transfer of electrical energy from the tractive network to the electric locomotive is used. An energy-receiver has a magnetic circuit made of two parts, which lower part has U-shaped form, the upper part is solid mobile lateral sides. In the lower part of themagnetic circuit a winding is located. The mobile lateral sides are equipped with pole pieces. The embodiment of the mobile lateral sides of energy-receiver as solid parts simplifies its design, and the introduction of pole pieces allows to increase mutual inductance between electric-traction network and winding of energy-receiver. The motion of electric locomotive in the sections with branching and intersection of the cables of network is ensured at lower boundary position of lateral sides.

Description

Description of the invention

The invention is related to the electrical equipment of vehicles (electric locomotives), in which contactless transmission of electrical energy from the traction network using magnetic induction is used.

The design of the power receiver of the electric locomotive is known with a magnet wire made of identical halves, which in the lower part have a trough-like shape, and elongated vertical sides, located coaxially with the corresponding cables of the traction network and covering them. In the lower parts of the magnetic circuit, the winding of the energy receiver with serially connected turns is placed (Development of mineral deposits of useful minerals. Sb. nauch. 70 truvod, 1989. - P. 83-87).

The disadvantage of such a power receiver is that the electric locomotive with it cannot move on sections of the traction network with branches and crossings of network cables.

The closest in terms of technical essence to the proposed invention is the energy receiver of a non-contact electric locomotive. 7 VbOY 5/00. The energy receiver of a non-contact 72 electric locomotive) with a magnet wire, made of identical halves, the lower part of which has a trough-like shape, and elongated side sides, coaxial with the corresponding cables of the traction network and covering them, and with a winding placed in the lower part of the magnet wire. The elongated side sides are separated from the lower , made movable with the possibility of their displacement in the vertical plane along arc trajectories and made of two segments curved outward along an arc and movably connected to each other. The movable sides are made with the possibility of fixing them in the upper limit position, when they cover the corresponding cable of the traction network with a gap, and in the lower limit position, when the upper segments of the movable sides are turned to a horizontal position inside the lower part of the magnetic conductor at the level of the winding surface.

The number of turns and windings is chosen such that it is divisible by the integer / without a remainder, where /l is the ratio of the specific mutual inductances of the traction network and the power receiver winding in the cases of, respectively, the upper and lower s 22 limit positions of the movable sides, and in the lower limit position of the coil windings are connected to each other in series, and in the upper one - in 7l parallel circuits with 1//l turns in each.

The disadvantage of such a power receiver is the complex design, which is due to the execution of the side moving sides from two movably connected segments, and the relatively small mutual inductance of the traction network with the winding of the power receiver in the upper and lower limit positions of the moving side sides. at

The basis of the invention is the task of improving the energy receiver of a non-contact electric locomotive, v. (about which, by a different execution of individual elements of the magnetic circuit, an increase in the mutual inductance of the traction network with the winding of the energy receiver is ensured, with a simplified design, and, due to this, the efficiency of the electric locomotive is increased. o

The task is solved by the fact that in the known design of the energy receiver of a contactless electric locomotive with a magnet wire made of two parts, the lower one of which has a trough-like shape, the upper one is formed by movable sides, which are made with the possibility of displacement in the vertical plane, are coaxial with the corresponding cables of the traction network and span they are in the upper limit position with a gap, and the winding is placed in the lower part of the magnet wire, and the number of turns MU of the winding is chosen such that it is divisible without a remainder by "Ф an integer /l, where l is the ratio of the specific mutual inductances of the traction network and the winding of the power receiver in 70 cases, respectively, of the upper and lower limit positions of the movable sides, and in the lower limit position, the turns of the winding are connected in series, and in the upper limit - in parallel circuits

With" with i/l turns in each, according to the invention, the movable sides are made solid with pole tips at their upper ends, with the possibility of changing the angle of inclination of these sides to the horizontal and the size of the gap between their lower ends.

Fig. 1 shows the cross-section of the energy receiver at the upper limit position of the movable sides. Fig. 2 is a cross-section of the energy receiver at the lower limit position of the movable side av | parties

The energy receiver of a non-contact electric locomotive is equipped with a magnetic circuit made of two parts, the lower one of which 1 has a trough-like shape. Winding 2 of the energy receiver is inserted inside the lower parts 1. Upper side

Gee! 20 sides 3,4 are separated from the lower part 1, made continuous and, as an option, curved partially in an arc; their upper ends are equipped with pole tips 5 and b, height n. Sides C and 4 are able to move c" in the vertical plane relative to the lower part 1 of the magnetic conductor to their given limit positions - upper and lower.

In the upper limit position of the movable sides 3, 4, they cover the cable 7 of the traction network, which 29 is fixed on the suspensions 8 (in Fig. 1; 2, one suspension is shown. The gap 9 between the planes of the pole

GF) of tips 5 and 6, size Bu, ensures the passage of the energy receiver past the suspensions 8 of the traction network.

In the lower limit position, the movable sides 3, 4 are turned by their upper ends with pole tips 5, b outside and are made with the possibility of changing the angle of inclination of the sides to the horizontal and the size of the gap B" between their lower ends. The size of the gap is chosen in such a way that it excludes shunting by pole 60 tips 5 and 6 of the magnetic flux of the network cable 7.

During the operation of the electric locomotive on sections of the traction network without intersections and branches, the movable sides 3, 4 of the magnetic circuit occupy the upper limit position, in which they cover with a gap 6, the cable 7 of the traction network. At the same time, thanks to the introduction of pole tips 5, 6 into the structure, a sufficiently high mutual inductance is ensured between the traction network and the winding 2 of the power receiver, which makes the transmission of electrical energy to the electric locomotive more efficient.

In this case, an electromotive force (EMF) occurs in winding 2 of the energy receiver

Ev Z «chiv ovi SO) with I . where o is the angular frequency of the current in the traction network; - the length of the magnet wire;

Mv - the number of turns in one of the parallel winding chains;

Mov is the specific mutual inductance of the traction network with the winding (calculated per one turn of the winding and per 70 units of the length of the magnetic conductor), which depends on the height and pole tips 5 and 6 and the size of the gap B4 between them;

I - current in the traction network.

In the lower limit position of the movable sides 3, 4, the mutual inductance between the traction network and the winding 2 of the power receiver decreases, but the electric locomotive gets the opportunity to move on sections with 7/5 branches of the network and crossings of network cables.

EMF in winding 2 of energy receiver, in this case:

En em Mono 2) where m is the number of turns of the winding; Mon is the specific mutual inductance of the traction network with the winding in the lower limit position of the sides, which depends on the angle c and the distance 2 between the lower ends of the sides.

In order to ensure the normal operation of the electric locomotive on any sections of the traction network, it is necessary to ensure the fulfillment of the following conditions: Ev-E,. Then from formulas (1) and (2) we have the relation: p

Like Mn. that (3) Fr

Mono ov

By choosing the height n of the pole tips 5 and 6 and the size of the gap B4 between them (in the upper limit position), the magnitude of the angle of inclination of the movable lateral sides a to the horizontal and the distance Bo between their lower ends (in the lower limit position) provide the ratio n as a whole numeric. This allows Ge) to rationally use the turns of the winding 2 of the energy receiver, namely: in the lower limit position of the movable sides, the turns of the winding m/n are connected to each other in series; in the upper limit position, from b turns create n parallel connected chains with m/n turns in each. aw!

The value of the inclination angle o is chosen from 0 to some maximum value, at which the moving side parts do not prevent the electric locomotive from moving in areas with branches and crossings of network cables; the number of turns of the m/n winding is chosen based on the condition of obtaining the given emf E,.

Due to the fact that the movable side sides of the magnet wire of the power receiver are solid, its construction and the operations of transferring the side sides from the lower limit position to the upper one are simplified. The introduction of pole tips 5 and b into the design of the magnetic circuit provides an increase in the mutual inductance between the traction network and the winding of the power receiver in the upper limit position of the movable sides. Due to the fact that in the lower limit position of the movable lateral sides З and 4:з» the pole tips serve as the lateral sides themselves, and not their segments, the size of the mutual inductance of the traction network with the power receiver winding increases. (uh)

Claims (1)

The formula of the invention ("c) Energy receiver of a non-contact electric locomotive, which contains a magnet wire, made of two parts, the lower one of which has a trough-like shape, and the upper one is formed by the side sides, made with the possibility of displacement in Ge") 20 in a vertical plane, which are coaxial with the cables traction network and cover them in the upper limit position with a gap, and the winding, which is placed in the lower part of the magnetic conductor, the number of turns m of the winding is chosen such that c" is divisible by an integer n without a remainder, where n is the ratio of the specific mutual inductances of the traction network and the winding energy receiver in cases of the upper and lower limit positions of the movable lateral sides, respectively, and in the lower limit position of the movable lateral sides of the magnetic circuit, the turns are connected to each other in series, and in the upper one - in n parallel circuits with m/n turns in each, which differs in that movable lateral GF) sides are made solid with pole tips at their upper ends, with the possibility of changing the angle of inclination sides to the horizontal and the size of the gap between their lower ends in the lower limit position of the movable sides. 60 b5