MXPA04012237A

MXPA04012237A - Primary conductor arrangement for a system for inductive transmission of electric power.

Info

Publication number: MXPA04012237A
Application number: MXPA04012237A
Authority: MX
Inventors: Green Andrew
Original assignee: Wampfler Ag
Priority date: 2002-06-12
Filing date: 2003-02-21
Publication date: 2005-02-25
Also published as: KR20050013572A; EP1515866A1; DE20209092U1; JP2005529028A; CA2486558A1; AU2003208741A1; CN1659060A; WO2003106213A1

Abstract

The invention relates to a primary conductor arrangement (1) for a system for inductive transmission of electric power. The conductor arrangement comprises an outgoing line and a return line (3) which are arranged in a parallel position at least in sections and which can be connected to a current source (4) such that the outgoing line and return line can be impinged upon by electric current. The inventive primary conductor arrangement makes it possible to provide as large a range as possible for a consumer which can be displaced along the primary conductor arrangement and to provide a field-strength distribution which is as homogeneous as possible along the entire arrangement by dividing the conductor arrangement (1) into a plurality of adjacent sections (A, B, C, D, E, F, G, H) . Each section comprises an outgoing line and a return line (2; 3) in addition to connection lines (5) connecting the outgoing and return lines. The sections are disposed in such a way that two successive sections overlap in a region (7) close to the connection line (5).

Description

1 PRIMARY DRIVER DISPOSAL FOR A SYSTEM FOR THE INDUCTIVE TRANSMISSION OF ELECTRIC POWER The present invention relates to a primary conductor arrangement for a system for inductively transmitting electric power in accordance with the main concept of claim 1. Arrangements for conducting the inductive transmission of non-contact energy, wherein a primary circuit is constituted by two parallel lines, separated from each other, is known from the state of the art, as for example from document DE 197 46 919 Al. A primary conductor arrangement of this type is a mobile consumer, for example a mobile land transport vehicle, which has a secondary circuit for the inductive reception of electrical energy from the magnetic field created by the primary circuit when current flows through it. he. The known arrangements of primary conductors are formed from a conductor loop placed along a section, which is connected to a source of electrical energy. The conductive loop includes an exit line and a return line that are placed parallel - between them at a given distance. Through the electric power source it is possible to influence the primary circuit formed in this way with electric current so that the flow of 2 the current moves in the line of exit and in the line of return in opposite directions. A sufficient energy density of the electric field created by the primary circuit along the conductor arrangement can be achieved with usual energy sources only in the case of conductor arrangements with a limited range, i.e. with a limited line length of exit and return line. Especially in the case of power supply by induction to land transport vehicles, it is nevertheless necessary in principle to have the appropriate length of the conductor arrangement to allow a corresponding range of the land transport vehicle. Furthermore, it is desirable that a more homogeneous field strength distribution be found along the primary circuit, that is, a more homogeneous possible density of the magnetic field created by the primary circuit. The object of the present invention is to provide a primary distributor arrangement for the inductive transmission of electrical energy to a mobile consumer, which allows the largest possible reach of the consumer traveling along the primary conductor arrangement and further creates a magnetic field as homogeneous as possible along the primary conductor arrangement through the incidence of electric current. This object is solved 3 by means of a primary control arrangement in accordance with the main concept of claim 1 through the features provided in the characterizing part of claim 1. Preferred embodiments of the present invention are derived from the subclaims. The invention consists in that the conductor arrangement is divided into numerous sections joined together, each section having an outlet line and a return line as well as connecting lines connecting the outlet line and the return line, and because the sections are arranged between them in such a way that two consecutive sections are joined in a region near their connection line. By dividing the primary circuit into several sections, a sufficiently high magnetic field density can be obtained along the overall conductor arrangement, while current can be incised on each section separately from a current source. Through the .empalme of contiguous sections on its edges a homogeneous field distribution is ensured in this transition zone. A more homogeneous transition possible from the field force distribution of one section to another neighboring section ensures a regular power supply to the mobile consumer along the length of the primary circuit and is especially necessary when the magnetic field of the primary circuit is used at the same time to direct the mobile consumer along the stretch. The invention will be described in greater detail below in relation to embodiments illustrated through the accompanying drawings. In the drawings: Figure 1 Figure 2 Figure 2 Figure 1 Figure 1 Figure 2 Figure 1 Figure 2 Figure 2 Figure 1 Figure 2 Figure 2 Figure 2 Figure 1 Figure 2 Figure 2 Figure 2 Figure 3; Figure 4 is a detailed perspective view of the splice region of two sections of the primary conductor arrangement of Figure 1 with a current feed point near the splice region; Figure 5 is a perspective view of a crossing of two primary conductor arrangements in accordance with Figure 1; Figure 6 is a detailed perspective representation of an output line and a return line of a section of the primary conductor arrangement of Figure 1 with tuning capacitors interleaved in the output line or return line. In Figure 1 a primary circuit formed from a primary conductor arrangement 1 according to the present invention for a system for the inductive transmission of electrical energy to a mobile consumer moving along the arrangement of primary conductor 1. Primary conductor arrangement 1 is divided into several consecutive sections (AH). Each of these sections (A-H) has an output line 2, a return line 3 as well as a connection line 5 connecting the output line with the return line. The output and return lines of the corresponding sections (AH) are indicated in Figure 1, each one, with the reference numbers 2X, 3X, ..., 5X, respectively, where X refers to the section (AH ) in question . The output line 2 and the return line 3 are, in each of the AH sections, parallel to each other and the connection lines 5 form the transition between the output line 2 and the return line 3. Under the concept of Parallel layout of the output line and return line means that the output line and the return line 3 run at a distance that remains constant between them. The path can be straight, as shown in sections A, C, E, and G, or it can also be curved, as shown in Figure 6. sections B, D, F, and H. The cables that make up the primary control arrangement 1 are twisted cables. In each section (AH) of the primary conductor arrangement 1 a current source 4 is contemplated, through which current can be impinged on the conductor loop formed by the output line 2, the connection line 5 and the line return 3. In the section indicated by the letter A in Figure 1, the output line 2A is connected to a current source 4A through power lines 8A and 9A. The supply lines 8A, 9A are approximately perpendicular with respect to the outlet line 2A. Correspondingly, the other sections B to H each have a current source 4B, 4C, ... 4H, which is connected either to the output line 2 or to the return line 3. In each The section of the conductor arrangement is connected in extension of the output line 2 or of the return line 3 on both sides of the section, a neighboring section, as shown in Figure 1. For example, section A is the section B is connected to the right and the section H is connected to the left. The sections connected between them are arranged in such a way that they are joined in a junction region 7, close to the corresponding connection lines 5, in such a way that in the junction region 7 the 2X output line of a region is placed immediately above and close to the corresponding 2X ± 1 output line of the neighboring section. The same applies in the case of return lines 3 of neighboring sections in the splice area. A detailed view of the splice region 7 of two sections connected therebetween, A, B is shown in Figure 2. From Figure 2 it follows that the length of the splice region 7 in the length direction of the The outlet or return line corresponds approximately to the length of the connection lines 5A or 5B, curves in the form of a semicircle. In the top view, the conductor arrangement in the splice area 7 is shown as a circular winding. The splice area can be larger, for example approximately twice as long as the length of the connecting line. Figure 3 also shows the area of junction 7, of two contiguous sections A and B, where in the vicinity of the area of junction 7 can be seen power supply points to impinge on the output lines 2A and 2B of the corresponding sections A and B. These current supply points are formed through supply lines 8B, 9B or 8A, 9A, which are derived from the corresponding output lines 2B or 2A and are connected to the source of current 4. The power lines 83, 93 or 8A or 9A run for the most part approximately 8 perpendicular to the corresponding outlet line 2B or 2A. The feeding lines 8, 9 are placed close to one another in plastic tubes 10. An alternative to the use of a plastic tube 10 may be the fact that the supply lines 3 and 9 are fastened through cable clips. . The perpendicular direction of the supply lines 8, 9 with respect to the outlet line 2 results in that no undesirable interfering magnetic field is formed along the exit line or return line. The angular or bent section, which forms the transition of the supply line 8, 9 to the outlet line 2 or return line 3 is therefore as short as possible and of the smallest possible radius, all without breaking the cable. The two feeding lines 8, 9 can be placed, in a non-illustrated embodiment, in such a way that they are located one above the other in a curve area. In this way, a field strength distribution is obtained that is as homogeneous as possible in relation to the magnetic field created by the conductor arrangement supplied with current in the vicinity of the current supply point. Figure 4 shows a modality in which the current supply point of a sec. t.r. B is located near the splice zone 7. The feed point of the adjoining section A on the contrary is far from the splice area 7 and therefore will not be illustrated in view 9 Detailed description of Figure 4. Figure 5 shows a crossing of two primary conductor arrangements 1A and IB. As shown, the line of exit or return of two sections it and Bla of the two primary conductor arrangements 1A and IB intersect in a crossing zone 11. Junction zone 7, where the Alb or Ala sections are connected. corresponding neighbors of the corresponding primary conductor arrangements 1A or IB, are preferably at a sufficient distance from the crossing area 11. By sufficient distance we here understand at least the effective electrical length of the secondary winding of the mobile consumer socket device . To allow a resonance tuning between the primary conductor arrangement and the pick-up device carrying the secondary winding of the mobile consumer, at each section (AH) of the primary conductor arrangement, at least one tunable capacitor 12 is contemplated. Figure 6 shows a cross section of a primary conductor arrangement in a detailed view. In both the output line 2 and the return line 3, a tuning capacitor 12 is inserted in each case on the branch lines 13, 14; 15, 16. The branch lines 13, 14 of the outlet line 2 are displaced relative to the branch lines 15, 16 of the return line 3 along the primary conductor arrangement, 10. at a certain distance between them, whereby the distance between them is at least as great or greater than the electrically effective extension of the mobile consumer's take-up device.

Claims

eleven CLAIMS A primary conductor arrangement (1) for a system for inductively transmitting electrical energy, where the conductor arrangement has an output line (2) and a return line (3), which at least in sections move parallel to each other and can be connected to a current source (4), so that an electric current can impinge on the outlet line and on the return line, characterized in that the conductor arrangement (1) is divided into several sections (A, B, C, D, E, F, G, H) connected between them, where each section presents an exit line and a return line (2; 3) as well as connection lines (5) which connect the exit line with the return line, and because the sections are arranged between them in such a way that two adjoining sections are joined in a zone (7) near their connection line (5). A primary conductor arrangement according to claim 1, characterized in that the length L of the splice zone (7) corresponds approximately to the length of the connection lines (5). A primary conductor arrangement according to claim 1 6 2, characterized in that adjacent sections are spliced in the longitudinal direction of the primary conductor arrangement (1) · A primary conductor arrangement according to any of claims 1 to 3, characterized in that in the junction zone (7) the line of exit and return line (2, 3) of a section is found on the exit line and return line of the neighboring section. A primary conductor arrangement according to any of the preceding claims, characterized in that the free ends (6) of the output line or "return line" of each of the sections are connected to a pair of power lines ( 8, 9), which connect the output line or return line with a current source (4) whereby the supply lines (8, 9) run approximately perpendicularly with respect to the output line or return line ( 2, 3) A primary conductor arrangement according to claim 5, characterized in that the two supply lines (8, 9) corresponding to a pair, of a section each have a straight area and a Contiguous curve zone, so that the straight areas 13 They are parallel to each other and close to each other and the curved areas of the two feeding lines cross over each other. A system for the inductive transmission of electrical energy with a primary conductor arrangement (1) according to any of the preceding claims for transmitting electrical energy to a user traveling along the primary conductor arrangement (1), for what the user presents a taking device to inductively take electrical energy from the magnetic field created by the primary conductor arrangement (1). A system according to claim 7, characterized in that each section (A, B, C, D, E, F, G, H) of the primary conductor arrangement (1) is supplied with electrical energy from a separate current source (4). A system in accordance with any of the rei indications 7 or 8, characterized in that it has two provisions of primary conductor (the, Ib) that is • cross according to any of claims 1 to 4, wherein 1 r junction zones (7) of the sections of each conductor arrangement (the, Ib) are outside the crossing area (11). A 'system of compliance with any of the 14 claims 7 to 9, characterized in that at least one tuning capacitor is interposed in each of the output line (2) and return line (3) for each section of the conductor arrangement for resonance tuning (11). , 12) that is connected through branch lines (13, 14; 15, 16) with the output line or return line, so the derivation lines (13, 14) of the output line and the bypass lines (15, 16) of the return line are displaced therebetween at a distance A which is at least as large or greater than the effective electrical extension of the consumer intake device in the longitudinal direction of the driver arrangement primary.