EP2094525A2 - Appareil de commutation de dispositif de guidage pour véhicules à sustentation magnétique - Google Patents

Appareil de commutation de dispositif de guidage pour véhicules à sustentation magnétique

Info

Publication number
EP2094525A2
EP2094525A2 EP07869647A EP07869647A EP2094525A2 EP 2094525 A2 EP2094525 A2 EP 2094525A2 EP 07869647 A EP07869647 A EP 07869647A EP 07869647 A EP07869647 A EP 07869647A EP 2094525 A2 EP2094525 A2 EP 2094525A2
Authority
EP
European Patent Office
Prior art keywords
guideway
bogie
vehicle
component
electromagnet
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP07869647A
Other languages
German (de)
English (en)
Inventor
John Lee Wamble
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Advanced Maglev Systems LLC
Original Assignee
Advanced Maglev Systems LLC
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Advanced Maglev Systems LLC filed Critical Advanced Maglev Systems LLC
Publication of EP2094525A2 publication Critical patent/EP2094525A2/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
    • E01B25/00—Tracks for special kinds of railways
    • E01B25/22—Tracks for railways with the vehicle suspended from rigid supporting rails
    • E01B25/26—Switches; Crossings

Definitions

  • the present invention is directed to transportation or transit systems, and more specifically, to networked guideway transit systems designed to enable the movement of large numbers of passengers or parcels in a flexible manner.
  • Guideway-based transportation systems have been used to transport people or goods.
  • PRT Personal Rapid Transit
  • each vehicle carries just one party or small group (or payload) from their origin directly to their destination, starting at a time determined by the party's arrival at its origin.
  • Vehicles are typically piloted by computer and move non-stop along guideways with diverging and merging paths.
  • At origin and destination access points (termed "portals”) vehicles stop on separate siding guideways so they do not impede the progress of other vehicles that are continuing to other destinations.
  • a switch that is the piece of guideway that makes possible the splitting or merging of paths, may be one of the most important and valuable technological features.
  • it is complicated and costly to construct switches that change the directions of vehicles traveling at any operational speed for the portion of network in which it is located, hi some PRT systems, underhanging vehicles are desirable.
  • the risk of a vehicle becoming detached and actually falling out of the guideway is an inherent problem of switches conventionally designed for underhanging vehicles.
  • the present invention is directed to a method and system for providing a switch that directs moving vehicles to a desired path on guideways of a networked guideway transit system.
  • the networked guideway transit system combines permanent magnet levitation with electrodynamic stabilization and linear motor propulsion. That is, the networked guideway transit system uses the permanent magnets to provide primary lift and uses electrodynamic repulsion to create centering forces at most operational speeds while integrating linear motor functions with the electrodynamic centering function.
  • the switch is used, at a divergent zone, to cause a vehicle bogie that couples a vehicle to the guideway to follow one side or the other of the diverging guideway magnet components. This is accomplished by use of an attracting magnetic array on the side that the vehicle bogie is desired to follow.
  • a switch apparatus to direct a vehicle bogie in a networked guideway transit system to a desired path at a divergent portion of a guideway.
  • the switch apparatus comprises an electromagnet component for attracting one side of a vehicle bogie in order to direct the vehicle bogie to a particular direction in the guideway.
  • the switch apparatus also comprises a guideway levitation component for lifting the vehicle attached to the vehicle bogie and an electrodynamic repulsion component for passively centering the vehicle bogie.
  • a networked guideway transit system that utilizes permanent magnets levitation and electrodynamic repulsion.
  • the networked guideway transit system includes a vehicle bogie that comprises a set of bogie segments, each of which includes a bogie levitation component for providing lifting forces and a bogie propulsion component for providing propulsion forces on the vehicle bogie.
  • the vehicle bogie supports a vehicle in the networked guideway transit system.
  • the networked guideway transit system includes a guideway that comprises a first portion and a second portion, each portion including a set of modular guideway blocks.
  • Each modular guideway block in the first portion includes a guideway levitation component for lifting the vehicle, a guideway propulsion component, and a electrodynamic repulsion component for passively centering the vehicle bogie.
  • Each modular guideway block in the second portion includes an electromagnet component for directing the vehicle bogie, a guideway levitation component for lifting the vehicle and an electrodynamic repulsion component for passively centering the vehicle bogie.
  • Fig. IA is a perspective view of a networked guideway system in accordance with an embodiment of the present invention
  • Fig. IB is a perspective view of the networked guideway system showing an exposed view of modular guideway blocks of the guideway in accordance with an embodiment of the present invention
  • Figs.2A and 2B are cross-sectional views of an exemplary embodiment of a bogie segment used in the networked guideway system
  • Fig.3 A and 3 B are perspective views of the networked guideway system of Fig. IA showing an exposed view of bogie segments of the vehicle bogie in accordance with an embodiment of the present invention
  • Figs. 4A and 4B are cross-sectional views of an exemplary embodiment of the modular guideway block used in the networked guideway system;
  • Fig.5 depicts a cross sectional view of an exemplary embodiment of a portion of guideway showing a bogie segment nested in a modular block guideway;
  • Fig 6 depicts an exemplary way of implementing the EDR centering subsystem in the networked guideway system
  • Figs.7A-7F are cross-sectional views of different embodiments of the bogie segment and the modular guideway block used in the networked guideway system
  • Figs.8A-8C are cross-sectional views of a switch portion of the guideway in accordance with an embodiment of the present invention.
  • Figs.9A-9C are cross-sectional views of a switch portion of the guideway in accordance with another embodiment of the present invention.
  • a method and system use permanent magnet repulsion with induction-based repulsion within the networked guideway transport system, which can levitate passively with motion.
  • the guideway in the networked guideway transit system includes a point where the guideway begins to split into two separate guideways, i.e. a divergent zone, the two sides of the guideway are spaced progressively farther apart.
  • a switch is used, at the divergent zone, to cause the vehicle bogie to follow one side or the other of the diverging guideway.
  • the switch may use electromagnet sources instead of permanent magnets so that the magnetic force can be altered to direct the vehicle bogie to either path.
  • the switch can use any suitable magnetic sources as long as the magnetic force of the magnetic sources can be altered to direct the vehicle bogie to either path.
  • the switch may operate without moving parts, so there is almost no inertia penalty to limit operational frequency.
  • the switch is designed to fail gracefully in the absence of activation power or control signals. Further, the switch is designed to ensure that there would be no derailment or dropping of a vehicle. That is, vertically attracting magnets or electromagnets are used to deflect segments of an articulated vehicle bogie without causing loss of suspension stability or requirement of any moving parts or active position control subsystems.
  • the switch operates at very high vehicle speeds and switching frequencies, i.e., short vehicle headways.
  • Magnetic levitation may provide advantages compared to traditional wheels on tracks.
  • Maglev has low or zero mechanical friction and thus parts in a Maglev system do not wear from contact. It has a wide range of speeds over which it can operate and in operation it generates relatively low noise levels.
  • Maglev as applied to traditional large train system architecture provides only marginally improved service characteristics, i.e. primarily shorter transit times on long runs where extreme ground speeds are attainable and practical. Because aerodynamic losses prevail at high speeds and powerful propulsion systems are required to overcome these losses, the extreme ground speeds achievable with Maglev are only feasible with large trains and large footprint guideways, and are obtained at an enormous energy cost.
  • a networked guideway transit system 100 includes levitation, centering and propulsion components, utilizing permanent magnets to provide primary levitation and electrodynamic repulsion to create centering forces.
  • the networked guideway transit system 100 generally includes a guideway 120 and a mating vehicle 160.
  • the guideway 120 has a suitable geometry to support and guide the vehicle 160 at any speed reasonably associated with such a networked guideway transit system.
  • the guideway 120 may include several modular guideway blocks that are straight and short segments of the guideway.
  • the modular guideway block refers to a basic unit of the guideway. As depicted in Fig. IB, the modular guideway blocks may be loaded into a shell that forms the guideway structural beam 122 to carry the load between support columns 115.
  • the vehicle 160 is supported by a vehicle bogie (not shown) that interlocks with the guideway 120.
  • the vehicle bogie is a guideway element that couples a vehicle to the guideway.
  • the vehicle bogie used for the networked guideway transit system may include several bogie segments, each of which includes levitation, centering and propulsion components.
  • Each bogie segment may have a finite length in order to fit in a single modular guideway block 110.
  • One non-limiting example of the bogie segment is shown in FIGS. 2A and 2B.
  • Figs. 2A and 2B illustrate cross sectional views of the bogie segment 200 in accordance with an embodiment of the present invention.
  • the bogie segment 200 includes primary permanent magnet repulsion (PMR) arrays, such as a bogie lifting magnet unit 204, that provide upward forces on the vehicle bogie.
  • the bogie segment 200 further includes clamping magnets, for example a bogie clamping magnet unit 206, that provide downward or vertical clamping forces on the bogie.
  • PMR primary permanent magnet repulsion
  • the clamping magnets of the bogie segment 200 are additional static magnetic field sources, generally high field permanent magnets with poles aligned so as to be in repulsion to magnets on the guideway. It is noted that the clamping magnets are static magnets and can be located on the guideway or the vehicle bogie.
  • the bogie clamping magnet unit 206 is located on the vehicle bogie and makes use of the bottom sides of the guideway magnets to produce repulsion, hi this embodiment, the bogie clamping magnet unit 206 may be used to add a downforce to the overall vertical force on the bogie segment 200.
  • the bogie clamping magnet unit 206 may be sized and positioned as appropriate such that the bogie clamping magnet unit 206 does not significantly decrease the levitation height provided by the bogie lifting magnet unit 204, but in the event the vehicle bogie rides too high because of load perturbations, the bogie clamping magnet unit 206 forces the bogie back down more rapidly than gravity alone. This may stiffen the suspension and assist to maintain the vertical position of the vehicle bogie. Also, in the case where an end of the vehicle bogie protrudes into a section of the guideway that does not contain PMR components for lifting, the bogie clamping magnet unit 206 may prevent the protruding end of the vehicle bogie tipping down into that unsupported section by holding down the opposite end.
  • the bogie segment 200 can include a passive centering device (e.g. a device including the electrodynamic repulsion (EDR) centering components 208) that comprises moving coils or conductor stacks.
  • the EDR centering components 208 may primarily provide centering forces but may also provide some propulsion forces to the bogie segment 200.
  • the bogie segment 110 may contain more PMR components (linear magnetic arrays) for mating, such as a bogie propulsion magnet unit 202, each arranged to be in opposition to corresponding PMR components (linear magnetic arrays) in the guideway.
  • the EDR centering components 208 may also function as propulsion components.
  • the coils in the conductor arrays (not shown) of the EDR centering components 208 are energized to provide forward thrust or regenerative braking by interaction with the magnets arranged in the guideway.
  • the electrical power may be delivered to the moving coil, the stationary coil or a combination thereof.
  • both stationary and moving coils are included in the vehicle bogie.
  • the stationary coils can deliver primary electrical power to the vehicle bogie, which is converted to the kinetic energy of motion, while the moving coils deliver secondary electrical power to the onboard energy supply by tapping into the same kinetic energy. In this manner, the electrical power can be transmitted from the guideway to the vehicle bogie (eventually to the vehicle) without contact.
  • FIG. 3A depicts a perspective view 300 of the networked guideway transit system showing an exposed view of bogie segments.
  • one vehicle bogie 360 may include a set of five bogie segments.
  • the networked guideway transit system uses underhanging vehicles 160 to facilitate high-speed operation.
  • the vehicle bogie 360 is mounted on vehicle attachment fin 362 that attaches the underhanging vehicle 160 to the vehicle bogie.
  • the vehicle bogie 360 is used for supporting the underhanging vehicle 160 and for mating the underhanging vehicle 160 to the guideway 120. As described above, the lifting is generated by magnetic repulsion between permanent magnets of the PMR components in the guideway modular block 110 and the vehicle bogie 360.
  • Fig. 3B depicts another perspective view 300 of the networked guideway transit system showing an exposed view of articulated bogie segments. Each bogie segment has a size such that the bogie segment can be nested in a modular guideway block 110. In order to navigate some portions of the guideway with tight radii, including diversion points of the guideway, the bogie segments of the vehicle bogie 360 may be articulated to flex in a horizontal dimension.
  • the bogie segments of the vehicle bogie 360 may be hinged along its vertical front and rear edges. This arrangement may leave the vehicle bogie rigid in the pitch, or vertical dimension. Moreover, in this way, the full mass of the vehicle 160 is distributed along the full length of the bogie segment. In addition, the bogie segments of the vehicle bogie 360 may be able to traverse sections of the guideway where there is not full magnetic levitation available. [0024] In addition, it is possible to reduce the bogie size (the cross section of the bogie) by combining the motor propulsion and EDR centering functions. The small cross section of the bogie reduces its aerodynamic resistance. Thus, its mass can be minimized. The largest lateral dimension may be kept small, which facilitates good track switch design.
  • the roll stability of the bogie is not dependent on the lateral spread between the primary lifting PMR components, but rather is achieved by the vertical spread between the EDR centering components.
  • several modular guideway blocks may be loaded into a shell that forms the guideway structure beam to carry the load.
  • the weight of the guideway beam is mostly static mass, not vehicle mass.
  • the supporting structure of the guideway (guideway beam) can be easily erected and the modular guideway blocks can be inserted with simple equipment.
  • the installation cost is minimized by the modular nature of the guideway components, which can be manufactured in a controlled factory environment using mass production methods.
  • FIG. 4A and 4B cross sectional views of the modular guideway block are depicted in accordance with an embodiment of the present invention.
  • Fig. 5 depicts a cut away view 500 of a portion of guideway showing a bogie segment 360 nested in a modular guideway block 400 in accordance with an embodiment of the present invention.
  • the modular guideway block 400 also comprises several PMR components that may be linear arrays of high field permanent magnets. Generally, there are two or more linear static magnetic arrays in the modular guideway block 400 as the PMR components.
  • the modular guideway block 400 includes a first PMR component, for example a guideway lifting magnet unit 420, that provides primary lifting and vertical clamping forces.
  • the primary lift forces are produced by static magnets in the first PMR component arranged in homopolar linear arrays, the long axis of the arrays aligned in the travel direction of the moving vehicle.
  • the modular guideway block 400 further includes a second EDR component, for example a guideway propulsion magnet unit 430, that provides primary centering forces and auxiliary propulsion forces. Permanent magnets used in the guideway lifting magnet unit 420 and the guideway propulsion magnet unit 430 may vary in size depending on track locations.
  • the modular guideway block 400 further comprises EDR centering components, such as guideway propulsion coils 442, that passively centers a moving vehicle bogie. That is, the EDR centering components of the modular guideway block 400 and the EDR magnets of the bogie segment 200 constitute an EDR centering subsystem that controls and centers the moving bogie via the interaction between the EDR magnets and electrically conductive elements in the networked guideway transit system.
  • EDR centering components such as guideway propulsion coils 442
  • the EDR centering components of the modular guideway block 400 and the EDR magnets of the bogie segment 200 constitute an EDR centering subsystem that controls and centers the moving bogie via the interaction between the EDR magnets and electrically conductive elements in the networked guideway transit system.
  • EDR centering components such as guideway propulsion coils 442
  • centering rollers or skids keep the vehicle bogie laterally centered?
  • locations of the EDR magnets and the EDR centering components of the EDR centering subsystem may be exchanged so that various embodiments can include any suitable arrangements of the permanent magnets and coils.
  • One non-limiting example of implementing the EDR centering subsystem is depicted later in Fig. 6.
  • the PMR components and the EDR centering components included in the bogie segments and/or the guideway modular blocks perform well as a means of conveyance in the networked guideway transport system 100.
  • the levitation (lift force) produced by the PMR components has good lift to magnet mass ratio, a significantly low drag at all speeds and can ride over small gaps between adjacent sections.
  • the PMR components used in the bogie segments and the modular guideway blocks can be compact, much smaller than wheels of the same carrying capacity and suspension stiffness.
  • the PMR components have no rotational inertia and lower mass than a comparable wheel system.
  • one or more EDR centering subsystems are used in the described embodiments.
  • the EDR centering subsystem comprises electrically conductive elements, for example the guideway propulsion coils 442, that are in relative motion to the magnetic sources (e.g., propulsion magnet units). As the magnetic flux varies within the conductors, electrical currents are induced to flow. The interaction of those currents with the magnetic fields produces forces with drag and repulsion components. As discussed above, the EDR centering subsystem has the advantage of producing nearly constant force over a large range of transverse displacement. Thus, the EDR centering subsystem works well when displaced in a direction normal to the travel direction and the force direction. Also, the force increases as the separation between the magnets and conductors decreases, making the arrangement stable in that axis.
  • the magnetic sources e.g., propulsion magnet units
  • the networked guideway transit system may utilize a dual EDR arrangement that includes two magnetic arrays facing a set of conductors, or conversely a set of linked conductor arrays bracketing a magnetic array.
  • the restoring force may increase as the center element moves farther off the center plane in the dual EDR arrangements.
  • the permanent magnet arrays (EDR magnets) in the bogie segment are located at the center with coils that are used as passive centering device.
  • the coils such as guideway propulsion coils 442, are connected in laterally opposite pairs in such a way that the motion induced voltages cancel when the magnet arrays are laterally equidistant from the coils.
  • the permanent magnet arrays are closer to one side than the other, current flows within each coil pair and the forces tends to push the magnets back to a center position. Both arrangements are present in embodiments discussed in conjunction with Figs. 2A, 2B, 4A and 4B above.
  • electrical energy can be transmitted from the guideway to the bogie-vehicle or vice versa.
  • the degree of roll stability required on any particular section of the guideway is determined by several factors, including the curvature of the guideway, the speed of travel, the mass of the vehicle, and the position of the vehicle, among others. Some of such factors can be controlled for a particular period or position of the guideway magnetic fields. For example, in a turn where the bogie-vehicle mass pushes against the outer wall of the guideway larger fixed magnets could be installed, while on the inner wall smaller magnets could be used. In this way, the centering force could be biased to anticipate and compensate for required centripetal turning force.
  • the networked guideway transit system may include a series connection of multiple coils to increase inductance of the EDR centering subsystems, which tends to reduce overall centering force but also reduce magnetic drag and the velocity at which the drag force transitions to centering force. This may be used for a lower speed section of the guideway.
  • the series or parallel connection of multiple coil pairs to the electrical drive or sinking circuits affects the magnitude of the induced voltage and can be optimized for the expected operational speed and power source characteristics.
  • an exemplary embodiment 710 includes the EDR components that are shown as inwardly pointed permanent magnet arrays 430 in the guideway, outwardly focused permanent magnet arrays 202 on the bogie, and propulsion coils 442, 208. Motion in the travel direction induces voltages within the guideway propulsion coils 442 in the guideway and coils 208 on the vehicle bogie. In both cases, the coils are connected in laterally opposite pairs such that the motion-induced voltages within the coils tend to oppose when the vehicle bogie is on the center plane.
  • an exemplary embodiment 720 includes the PMR components and the upper lateral centering elements similar to the exemplary embodiment 710 described above and a modified EDR subsystem.
  • the upper lateral centering elements may function as the primary motor in the exemplary embodiment 720.
  • the exemplary embodiment 720 may include lower centering elements having an EDR arrangement that uses a stack of planar conductive elements 290 or a so-called ladder track instead of coils.
  • the stack of planar conductive elements 290 is a passive electrical conductor array.
  • the PMR components, such as guideway propulsion magnet unit 430, of the guideway are focused inward onto this conductor array.
  • voltages are induced within the conductors.
  • the guideway magnets, such as the guideway propulsion magnet unit 430 are arranged so that their lateral fluxes are oppositely directed there is a steep gradient in the lateral flux density with lateral position, with lateral flux density tending to zero at the center plane.
  • the induced voltages are strongly dependent on the lateral flux components so at center plane minimum voltages occur.
  • the voltages give rise to currents within the conductors and the interaction between these currents and components of the magnetic flux field tend to push the conductor stack (and thus the bogie) back toward the center plane. Because there are laterally constraining forces high and low the bogie is resistant to rolling and the underhanging vehicle 160 (Fig. 3A) can be damped in its swinging motion. The resulting reaction forces taken up by the bogie may be transmitted to the guideway without mechanical contact.
  • the advantages that the exemplary embodiment 720 has are simpler construction of the conductor array compared to the motor coils, and more powerful centering force for the same magnetic array size. In fact, the exemplary embodiment 720 produces the strongest centering forces for a given size of centering element and it produces those strong centering forces near the pivot point where they are maximally effective at controlling lateral displacement of the vehicle.
  • an exemplary embodiment 730 includes several permanent magnet components and upper lateral centering elements in a similar manner to the exemplary embodiment 710.
  • the lower centering elements in this embodiment 730 are also the same as the upper centering elements, including the guideway propulsion coils 442 and a permanent magnet component 202 for flux generation.
  • This exemplary embodiment 730 has the advantage of additional propulsion power from motor coils with guideway-sourced power. Also, significantly, this embodiment 730 uses much less magnet mass in the guideway, which may lead to substantial cost reductions in construction.
  • Figs. 7D-7F more exemplary embodiments are depicted. As shown, bogie segments of these embodiments do not include clamping magnets 206 (Fig.
  • the exemplary embodiments 740, 750, 760 include two EDR centering subsystems.
  • the upper subsystem comprises a linear motor with bogie propulsion magnet arrays 202, a guideway located drive module 449 and guideway propulsion coils 442. Motion in the travel direction induces voltages within the guideway propulsion coils 442.
  • the coils are connected in laterally opposite pairs such that the motion- induced voltages within the coils tend to oppose when the bogie is on the center plane. This results in no current flow within the coils.
  • the bogie is biased toward one side of the guideway the voltages increase in the coils on that side and decrease in the coils on the opposite side.
  • the lower EDR centering subsystem comprises a pair of EDR components, such as guideway based planar conductor stacks 290 as shown.
  • the same magnets 202 that provide the flux for the motor and centering in the upper subsystem provide flux for the lower subsystem.
  • the magnets are above the conductors but overlap by a small fraction of the conductor height.
  • the transverse flux of the magnet arrays induces currents to flow within the guideway based planar conductor stacks 290.
  • the magnitude of the currents varies with the flux density and with the degree of overlap between the magnets and the conductors. When the magnets are closer to one side the flux density, and thus the induced current, is greater. When the overlap is greater the induced current is also greater.
  • the pattern of conductive pathways within the stacks is such that the induced currents flow through vertically oriented paths and are concentrated in the upper and lower edges of the stacks.
  • the interaction of the longitudinal components of the magnetic fields and the electrical currents through the vertical conductors causes forces that tend to push the conductors away from the magnets. Since the magnitude of the force is dependent on the magnitude of the electrical currents, the closer the magnets are to the conductors the larger the repulsion force between them.
  • the electrical currents are dependent on the proximity between the magnets and the conductors, and on the magnitude of the flux density at the conductor (which also increases with decreasing distance). Thus, this may produce a laterally stable arrangement.
  • the guideway 120 in the networked guideway transit system 100 includes a divergent zone where the two sides of the guideway are spaced progressively farther apart.
  • a switch is used, at the divergent zone, to cause the vehicle bogie to follow one side or the other of the diverging guideway.
  • the switch may include electromagnets so that the magnetic force can be altered to direct the vehicle bogie to either path.
  • the dead zone would be significantly short and would not cause a complete loss of lift. Instead, the vehicle bogie would travels this section with four of five segments in full PMR levitation, but without benefit of the lateral guidance provided by the electromagnetic arrays. Without the active electromagnets, the path of the vehicle bogie would be determined by the passive EDR centering components and inertia.
  • a new electromagnet array may be added in the switch, located above the bogie lifting magnet unit (primary PMR component for lifting.)
  • the two vertically opposite attracting guideway arrays exert lateral forces that combine in the same direction and act to bring the PMR components in the vehicle bogie on the first side into proper vertical alignment.
  • the vehicle bogie is not pushed to the outer wall of the guideway but rather to a position where the PMR components in the vehicle bogie and the electromagnet array (in the switch) in an attraction mode are vertically aligned.
  • the switch causes one side of the bogie to tend to follow the side of the guideway with the dual attraction arrangement.
  • the switch also includes a electromagnet array operated in a repulsion mode, which allows the second side of the vehicle bogie to experience a vertical clamping and a lateral push, at least while the vehicle bogie and the electromagnet array are in proximity.
  • the leading edge of the vehicle bogie tracks one side with the electromagnet array operated in the attraction mode and moves away from the other side with the electromagnet array operated in the repulsion mode. At some point the divergence becomes large enough that there is space enough for two complete sets of guideway magnet arrays. At this point, the orientation of all magnets in the modular guideway block is returned to a repulsion mode.
  • each cross section view depicts a portion of the guideway at three different points 810, 820, 830 during a switching operation, for example, a switch portion 810 immediately before divergence, a switch portion 820 during divergence and a switch portion 830 immediately after divergence.
  • the bogie segment is laterally trapped by upper centering/propulsion elements 420, 202 and lower centering/propulsion elements 430, 208.
  • the lift is still provided by guideway permanent magnet arrays 420 at both sides acting on bogie magnet arrays 204.
  • Propulsion if it is active, is provided by the upper and lower centering/propulsion elements.
  • the bogie segment is transiting a portion of the guideway 120 where the outer walls of the guideway have diverged, leaving a wider than normal space in the interior.
  • the permanent magnet lifting arrays in the guideway are replaced with vertically polarized track switching homopolar electromagnetic arrays 725, 726 within this portion.
  • the electromagnetic arrays 725, 726 within this portion are energized by power sources within the guideway electronics module 449 in either of two directions. That is, the electromagnetic arrays of the two sides are energized with opposite polarity.
  • the electromagnetic arrays 725 are energized with the same polarity as the polarity of the bogie lift magnets 204 so that there is attraction between those elements, both vertical and lateral. Because there is attraction both upward and downward from the upper and lower electromagnet arrays, the net vertical force can be minimized. The lateral attraction forces are summed, creating a strong net lateral attraction for the bogie lift magnets. This tends to pull the attracted side of the bogie segment into alignment with the electromagnet arrays on the first side.
  • the electromagnetic arrays 726 are energized with the opposite polarity as the bogie permanent magnets 204.
  • the electromagnets and PMR components on the bogie for example the bogie lifting magnet unit (PMR component) 204, the bogie clamping magnet unit (PMR component) 204, etc.
  • Such repulsion causes the bogie magnets to be moved laterally out from between the electromagnetic arrays on the second side.
  • the net result of the pulling in on the first side 725 and the pushing out on the second side 726 is to cause the bogie segment to track toward the side with the attracting electromagnet arrays.
  • the direction of bogie movement can be switched by choosing the direction of current. It is noted that the force attracting the bogie segment forces a vertical alignment of the bogie lifting magnet unit 204 with the active guideway electromagnets. Also, throughout the transit, the lateral repulsion (EDR) elements are still active on the attraction side of the guideway, further preventing a collision of the bogie segment with the wall of the modular guideway block. Preferably, there may be one bogie segment out of five within the divergent track section at any time so the remaining bogie segments continue to provide lift and stability for the whole bogie. The short length of divergent track also makes it mechanically improbable for the bogie to dive downward through the bottom of the guideway.
  • the bogie segment has transited the divergent section of guideway and is engaged with a fully functional modular guideway block of the typical construction.
  • the bogie is well captured at both ends and is very stable.
  • the guideway has become two separate fully functional guideways free to follow divergent paths.
  • FIGS 9A-9C cross sections of a switch portion of the guideway including a bogie segment nested in a modular block are depicted in accordance with another embodiment of the present invention.
  • the bogie segment is still laterally trapped by upper centering/propulsion elements 420, 202 and lower centering/propulsion elements 430, 208.
  • the lift is still provided by PMR components, such as the guideway lifting magnet unit 420 at both sides acting on the PMR components, such as the bogie lifting magnet unit 204, in the bogie segment.
  • the bogie segment is transiting a portion of guideway 120 where the outer walls of the guideway have diverged, leaving a wider than normal space in the interior of the guideway.
  • the guideway lifting magnet units in the guideway are replaced with vertically polarized track switching homopolar electromagnetic arrays 725, 726 within this portion.
  • electromagnet arrays are energized by power sources within the guideway electronics module 449 in either of two directions.
  • the electromagnetic arrays of the two sides are energized with opposite polarity. If one side of the electromagnetic arrays 725 is energized with the same polarity as the polarity of the bogie lift magnets 204 then it provides attraction toward both the primary bogie lift magnets 204 and the bogie clamping magnets 206. Such attraction is both vertical and lateral. Because there is attraction both upward and downward from the upper and lower electromagnet arrays the net vertical force is minimized. But the lateral attraction forces are summed creating a strong net lateral attraction for the onboard lift magnets and onboard clamping magnets.
  • the bogie segment has transited the divergent zone of the guideway and while exiting the divergent zone, the bogie segment is engaged with a modular guideway block 932 of the desired path.
  • the bogie is well captured at both ends and is very stable.
  • a failsafe behavior of the switch and the networked guideway system will be discussed in greater detail below, hi case when the switch is a symmetric divergent zone, with each side curving away at the same rate and at laterally adjacent locations, then the electromagnets there would be energized to direct a vehicle bogie to either curve. If an asymmetric divergent zone is used where one side continues straight ahead while the other curves away, then energizing the electromagnets is only required in order to follow the curving side. Thus, even if a power or control fails, a vehicle bogie entering this divergent zone would continue to follow the straight path, which would then be the default path (the inertial path).
  • the exiting path which was straight until that point, bends away but with full support of lifting and centering components.
  • the continuation path also has full lifting and centering components beyond the point of full divergence.
  • magnetic lateral pull is required, i.e., at the start of the continuation path, hi other locations the vehicle bogie is guided by passive repulsion forces and inertia or, in the case of very low speed operation, auxiliary rollers or skids.
  • the network guideway system includes the permanent magnet repulsion (PMR) components, consisting of static field magnetic sources with poles arranged so that their fields oppose each other and developing repulsion forces. Lateral accelerations of various magnitudes will be utilized on various parts of the network guideway system as the vehicle bogie and the vehicle move through. It is advantageous to execute the divergence in as short a travel distance as possible in order to minimize the fraction of the vehicle bogie that is over the divergence at any time.
  • the lateral acceleration on each individual bogie segment is a function of the radii of curvature of the guideway segment and the velocity of the bogie/vehicle.
  • the spread between left and right levitation magnets is minimized to reduce the required lateral separation.
  • the separation is controlled to occur in a track length equivalent to one segment of the set of five bogie segments.
  • the excessive lateral accelerations would allow the underhanging vehicle to swing laterally. In such a position the underhanging vehicle does not immediately experience the lateral accelerations of the vehicle bogie but instead swings slightly to accommodate the rapid movement of the vehicle bogie first one way then back to centerline. It is important to note that the highest lateral accelerations are imposed on only one segment of the vehicle bogie at a time, so the magnitude of the force required executing the maneuver is much reduced.
  • the behavior of the electromagnets is less critical to the execution of the operation.
  • the electromagnets could cease function and the operation would still succeed, though at less than optimal performance.
  • the self-centering behavior of the attractive magnet arrangements may preclude the need for lateral position sensing for good operation under most circumstances.
  • extreme lateral accelerations on the bogie segments may require additional direct electromagnetic attraction during the initial curvature. In that case, position sensing may be required to prevent the vehicle bogie from contacting the guideway wall.
  • a converging zone can act as a latch if only one side of its magnetic arrays is in attraction mode while the other side is left in repulsion.
  • this switch As a vehicle bogie traverses this switch in the convergence direction it will function much as the standard convergence zone. But if a vehicle bogie traverses this configuration in reverse it will always follow one path, the path with the attractive magnets.
  • This type of switch may be useful in special situations, for instance parking vehicles in holding bays alongside a low speed through path.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Control Of Vehicles With Linear Motors And Vehicles That Are Magnetically Levitated (AREA)
  • Control Of Position, Course, Altitude, Or Attitude Of Moving Bodies (AREA)

Abstract

L'invention concerne un commutateur utilisé au niveau de la zone divergente pour permettre au bogie du véhicule de suivre une voie ou une autre du dispositif de guidage. Ceci est obtenu par substitution d'un réseau magnétique d'attraction sur le côté que le bogie du véhicule souhaite suivre. Le commutateur peut fonctionner sans éléments mobiles, ne générant ainsi pas de désavantage inertiel pouvant limiter la fréquence opérationnelle. Le commutateur est conçu pour se bloquer en l'absence d'activation ou de signaux de commande. Le commutateur est conçu, de plus, pour garantir qu'il ne se produise aucun déraillement ou affaissement d'un véhicule.
EP07869647A 2006-12-20 2007-12-20 Appareil de commutation de dispositif de guidage pour véhicules à sustentation magnétique Withdrawn EP2094525A2 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US87088406P 2006-12-20 2006-12-20
US11/960,628 US20080148988A1 (en) 2006-12-20 2007-12-19 Guideway switch apparatus for magnetically levitated vehicles
PCT/US2007/088375 WO2008079975A2 (fr) 2006-12-20 2007-12-20 Appareil de commutation de dispositif de guidage pour véhicules à sustentation magnétique

Publications (1)

Publication Number Publication Date
EP2094525A2 true EP2094525A2 (fr) 2009-09-02

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EP07869647A Withdrawn EP2094525A2 (fr) 2006-12-20 2007-12-20 Appareil de commutation de dispositif de guidage pour véhicules à sustentation magnétique

Country Status (3)

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US (2) US20080148988A1 (fr)
EP (1) EP2094525A2 (fr)
WO (1) WO2008079975A2 (fr)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007134641A1 (fr) * 2006-05-24 2007-11-29 Siemens Aktiengesellschaft Bifurcation de voies de circulation de véhicules, en particulier de trains par suspension magnétique
US20080148988A1 (en) * 2006-12-20 2008-06-26 John Lee Wamble Guideway switch apparatus for magnetically levitated vehicles
US8302535B2 (en) 2010-08-09 2012-11-06 Chase Thomas B Train yard classification system
WO2016037116A1 (fr) * 2014-09-05 2016-03-10 Skytran Inc. Commutation verticale dans un système de transport à rails de guidage à sustentation magnétique
WO2017162144A1 (fr) * 2016-03-23 2017-09-28 刘忠臣 Système de voie ferrée à lévitation d'aimant permanent
US10031559B1 (en) * 2016-09-19 2018-07-24 Apple Inc. Switchable magnetic array
CN106609488B (zh) * 2016-11-29 2019-11-19 洛阳理工学院 高温超导磁悬浮车永磁轨道道岔
NL2019259B1 (en) 2017-07-17 2019-01-30 Hardt Ip B V Switch for a track for guiding transportation of a vehicle
RU2745747C2 (ru) * 2019-07-24 2021-03-31 Аким Анатольевич Адвакатов Магнитолевитационный стрелочный перевод без механических и подвижных узлов
CN110747703B (zh) * 2019-09-27 2021-03-30 江西理工大学 一种悬挂式永磁磁浮轨道道岔
CN114162147A (zh) * 2021-11-26 2022-03-11 东风悦享科技有限公司 一种基于prt模块化车辆的转运装置

Family Cites Families (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2318756B2 (de) * 1973-04-13 1975-06-26 Siemens Ag, 1000 Berlin Und 8000 Muenchen Elektromagnetische Spurführung für ein Fahrzeug
SU528028A3 (ru) * 1974-05-27 1976-09-05 Сименс Аг (Фирма) Устройство дл поворота экипажа с магнитным подвешиванием
US5778796A (en) * 1994-06-21 1998-07-14 Kim; In Ki Switch system for personal rapid transit
US5503083A (en) * 1994-06-23 1996-04-02 Powell; James R. Electromagnetic induction suspension and horizontal switching system for a vehicle on a planar guideway
US5746034B1 (en) * 1994-12-30 2000-10-17 Steelcase Inc Partition system
DE19615596A1 (de) * 1995-05-03 1996-11-07 Industrieanlagen Betriebsges Anordnung zur Energieeinspeisung in Statorabschnitte eines Langstator-Magnetbahnsystems
US6450103B2 (en) * 1996-05-07 2002-09-17 Einar Svensson Monorail system
US5794535A (en) * 1997-04-10 1998-08-18 Pardes; Herman I. Switching mechanism for transit modules
US5904101A (en) * 1997-04-22 1999-05-18 Power Superconductor Applications Co., Inc. Auxiliary propulsion for magnetically levitated vehicle
US6101952A (en) * 1997-12-24 2000-08-15 Magnemotion, Inc. Vehicle guidance and switching via magnetic forces
US6629503B2 (en) * 2001-06-29 2003-10-07 The Regents Of The University Of California Inductrack configuration
US7204192B2 (en) * 2001-07-02 2007-04-17 Magna Force, Inc. Apparatus, systems and methods for levitating and moving objects
US6510799B2 (en) * 2001-07-02 2003-01-28 Magna Force, Inc. Apparatus, systems and methods for levitating and moving objects
DE102004054918A1 (de) * 2004-11-10 2006-05-11 Transrapid International Gmbh & Co. Kg Vorrichtung mit wenigstens einem Langstator-Linearantrieb zum Betreiben von Magnetschwebefahrzeugen
EP1907257A2 (fr) * 2005-07-22 2008-04-09 Magnemotion, Inc. Commutation magnetique de vehicules commandee par rail de guidage
US8171858B2 (en) * 2006-12-20 2012-05-08 Advanced Maglev Systems, Llc Transit system vehicle guideway constructed from modular elements and using magnetic levitation for suspension and propulsion vehicles
US20080148988A1 (en) * 2006-12-20 2008-06-26 John Lee Wamble Guideway switch apparatus for magnetically levitated vehicles
US7562628B2 (en) * 2006-12-20 2009-07-21 Wamble Iii John Lee Guideway transportation system with integrated magnetic levitation suspension, stabilization and propulsion functions

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2008079975A2 *

Also Published As

Publication number Publication date
US20100199876A1 (en) 2010-08-12
WO2008079975A3 (fr) 2008-09-25
US20080148988A1 (en) 2008-06-26
WO2008079975A2 (fr) 2008-07-03

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