CN105346408A - Series-connection type permanent magnet hybrid suspension device based on dislocation structure - Google Patents

Series-connection type permanent magnet hybrid suspension device based on dislocation structure Download PDF

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Publication number
CN105346408A
CN105346408A CN201510737060.6A CN201510737060A CN105346408A CN 105346408 A CN105346408 A CN 105346408A CN 201510737060 A CN201510737060 A CN 201510737060A CN 105346408 A CN105346408 A CN 105346408A
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China
Prior art keywords
permanent magnet
suspension
series
width
connection type
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CN201510737060.6A
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Chinese (zh)
Inventor
刘国清
张昆仑
张慧
靖永志
王滢
王涛
郭秀云
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Southwest Jiaotong University
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Southwest Jiaotong University
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Priority to CN201510737060.6A priority Critical patent/CN105346408A/en
Publication of CN105346408A publication Critical patent/CN105346408A/en
Pending legal-status Critical Current

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Abstract

The invention discloses a series-connection type permanent magnet hybrid suspension device based on a dislocation structure. Each U-shaped device comprises a permanent magnet and electromagnets connected with the permanent magnet in series. The width of the outer edges of two poles of each U-shaped device composed of the corresponding permanent magnet and the electromagnets connected with the permanent magnet in series is larger than that of an F-type rail; the U-shaped devices in a certain number are installed below a train bogie and the center lines of the U-shaped devices coincide with the center line of the F-type rail; and after the rail is installed, the width L of the outer edge of a lower working plane is equal to that of the F-type rail. Compared with a traditional structure, the series-connection type permanent magnet hybrid suspension device of the structure is weak in suspension force and air gap relation, so that when suspension is changed due to the factors such as loads and the flatness of the rail, electromagnetic force fluctuation is small, and the suspension suction blocking problem commonly existing in a traditional structure is solved. The control difficulty is lowered and meanwhile operation safety and reliability are improved. Compared with a parallel-connection type permanent magnet hybrid suspension device, zero-power suspension can be achieved through the series-connection type permanent magnet hybrid suspension device, energy consumption is reduced, and the device is simpler in structure and convenient to produce industrially.

Description

A kind of series-connection type permanent-magnet hybrid device based on misconstruction
Technical field
The present invention relates to magnetic suspension train technical field, be specifically related to a kind of permanent magnetism mixed magnetic floating device for attractive medium-and low-speed maglev train.
Background technology
Since from the twenties in last century, Germany engineer Ken Peier proposes magnetic-levitation train concept, this novel traffic mode is with one of its advantage major way becoming future transportation such as high speed, safety.Through the development of last 100 years, magnetic-levitation train forms electromagnetic attraction gradually and suspends (EMS) and electrodynamic repulsion force suspension (EDS) two kinds of Main Patterns.Wherein suction suspends progressively becomes prevailing model at present, and German TR, Japanese HSST system are the floating Typical Representative of remodeling magnetic.
Above two kinds of patterns are that normal magnetic conduction floats, and rely on electromagnet to produce suction, change lift force and suspension air gap, thus realize stable suspersion by adjustment size of current.This suspended pattern energy consumption is higher, and load-carrying ability is lower, becomes the one of the main reasons of its development of restriction.
In order to overcome the defect often led suction and suspend, having scholar to propose mix suspending pattern, relying on the superconducting coil of energising to provide lift force, normal conductor coil only plays regulating action when load or air gap sudden change, thus realizes " 0 " power suspension.But this suspended pattern cost is higher, and there is " quench " risk in superconducting coil.
Along with rare earth the reach of science, have scholar's proposition permanent magnet to substitute superconducting coil, provide stable suspersion power, normal conductor coil only plays regulatory role suspension air gap.But because magnetic field of permanent magnet is uncontrollable, and in traditional permanent magnetism mix suspending structure, suspending module external polar plate and F type suspension railway wide, therefore lift force with air gap change clearly, when air gap is less, lift force is much larger than train gravity, thus train is easily caused " to inhale dead " (namely suspension air gap is 0), and the maximum reverse electromagnetic force that can provide due to normal conductor coil provides lift force much smaller than permanent magnet time " inhaling dead ", therefore train once " inhale dead " very again difficulty fall, thus had a strong impact on safety in operation.Although parallel connection type mix suspending device can be avoided suspend " inhaling dead ", permanent magnet module and electromagnetic module are alternately arranged in below bogie truck by it, and two kinds of modular construction differences, therefore its technique is comparatively complicated, and cost is higher.What is more important, when parallel permanent magnetism mix suspending must meet " inhaling dead ", lift force that permanent magnet provides is less than train gravity, and therefore under specified air gap, electromagnet is in running order all the time, adds energy consumption, can not realize " 0 " power suspension.
Summary of the invention
In view of the shortcoming of prior art, the object of the invention is to design a kind of novel permanent magnetic mixed magnetic floating device, make it the shortcoming overcoming prior art, weaken the sensivity that lift force changes with air gap, thus the lift force that under realizing any possibility air gap state, permanent magnet provides is suitable with train gravity, namely, when suspension air gap is 0, permanent magnet lift force is only slightly larger than train gravity, and the reverse electromagnetic force now produced by normal conductor coil is avoided " inhaling dead ".
The object of the invention realizes by following means:
Based on a series-connection type permanent-magnet hybrid device for misconstruction, the electromagnet composition that every covering device comprises permanent magnet and connects with it, many covering devices are installed on below train bogie, thus realize mix suspending, it is characterized in that:
A) outer, the two poles of the earth width of U-shaped device that permanent magnet and the electromagnet of connecting with it are formed is greater than F type track width; B) the U-shaped device of some is installed on its line of centers below train bogie and overlaps with F type rail line of centers; C) the outer width L of track installation rear lower working face equals F type rail width; The two-plate outer width of U-shaped device is not equal to F type track width, forms misconstruction.
Magnetic field of permanent magnet is connected with electromagnet magnetic field afterwards and F type track forms field circuit, produces suction, by the bogie truck generation lift force upwards of mounting rail to magnetic-levitation train.Its groundwork and traditional permanent magnetism mix suspending similar, but lift force that permanent magnet provides is with air gap index variation in conventional confguration, in order under the specified air gap of energy-conservation usual design, permanent magnet lift force equals gravity, and after air gap is reduced to certain value (as 1mm), lift force is much larger than gravity, and normal conductor coil conveyance capacity is limited, enough backing fields cannot be provided, therefore be easy to cause " inhaling dead ".And in structure of the present invention, lift force that permanent magnet provides may almost keep constant under air gap condition various, therefore by choosing rational permanent-magnet material, under can making specified air gap, permanent magnet lift force equals train gravity, simultaneously under minimum air gap (even zero-air-gap) slightly larger than gravity, now by normal conductor coil oppositely logical magnetic, reduce lift force, train is fallen, when reaching specified air gap, disconnect normal conductor coil, electromagnet quits work, and provides suction completely by permanent magnet.
Be below this device mode of operation under typical condition:
State (1), specified suspended state
When being in specified suspended state, air gap is rated value, can be met now permanent magnet provided lift force to equal train gravity by Reasonable Parameters configuration, system is in " 0 " power operating state, without suspension energy consumption.State (2), floating state
When train floating, working gas gap comparatively large (as 20mm), the lift force that permanent magnetism physical efficiency provides is less than train gravity, now in normal conductor coil, pass to direct current (DC), electromagnet is superposed with magnetic field of permanent magnet, is greater than train gravity to meet electromagnetic force, in electromagnetic force Train floating.
State (3), small air gap state
When train because when the factors such as rail smooth cause suspension air gap to be less than specified air gap, the present invention can make lift force only slightly larger than gravity, in normal conductor coil, now pass to the direct current (DC) reverse with state (2), electromagnet is that permanent magnet oppositely magnetizes, make lift force be less than gravity, train falls, and suspension air gap increases, until after reaching state (1), electromagnet quits work.
State (4), faulty condition
When causing due to factors such as permanent magnet losss of excitation that under specified air gap, permanent magnet lift force is less than (or being greater than) gravity, now be energized to normal conductor coil, electromagnet is superposed with magnetic field of permanent magnet (or counteracting), thus increase (or reduction) lift force, to meet train stable suspersion.
To sum up, by reasonable disposition parameter, structure of the present invention effectively can solve permanent magnetism mix suspending and " inhale extremely " problem, improves safety, simultaneously because lift force is not obvious with air gap change, also reduces control difficulty.
Accompanying drawing is described as follows:
Accompanying drawing 1 is module and F type rail relative position relation figure in the present invention.
Accompanying drawing 2 is that prior art contrasts with result of the present invention and schemes, and (a) and (b) is respectively structure of the present invention and tradition
Structural representation.
Accompanying drawing 3 is the tandem permanent magnet mixing device schematic diagrams considering engineer applied.
Accompanying drawing 4 is conventional confguration under parameter shown in accompanying drawing 3 and structure electromagnetic force of the present invention and air gap relationship experiments curve.
In figure: 1 is F type rail, and 2 is permanent magnet, and 3 is electromagnet, and 4 is coil, and L is the outer width of track installation rear lower working face.
Detailed description of the invention
Below in conjunction with accompanying drawing, structure of the present invention is described in further detail.
As shown in Figure 1, this device cross section is U-shaped, and itself and F rail are just to arrangement, and Figure 1 shows that train bogie side schematic diagram, opposite side is arranged symmetrically with it.
From Fig. 2 (a), in conventional confguration, the U-shaped section width of suspending module is equal with F rail width, and by Fig. 2 (b), in structure of the present invention, suspending module outer is greater than F rail width, and electromagnet and magnetic circuit are series relationship.
With reference to Zhuzhou medium-and low-speed maglev commerical test line technology index, train at full load linear mass is 2.4T, and because train weight is symmetrical, unit length places an order lateral suspension quality 1.2T.For satisfied suspension requirement, design tandem type mix suspending plant bulk as shown in Figure 3.
Fig. 4 is under parameter shown in Fig. 3, and conventional confguration and structure electromagnetic force of the present invention are with air gap change curve (conventional confguration suspending module width is identical with F rail width, is 220mm).As seen from the figure, tandem type mix suspending device lift force is hardly with air gap change, and under air gap 8mm, permanent magnet provides lift force to be 12kN, is just train gravity.And zero-air-gap low suspension power is 12.58kN, only increase by 4.87%, now electromagnet only needs oppositely to magnetize, and overcomes 4.87% times of gravity.Adopt conventional confguration, electromagnetic force, with air gap exponential damping, meets specified lift force requirement 12kN during air gap 20mm, and when air gap decays to 0, lift force 130.23kN, increases by 983.3% than specified lift force.For avoiding " inhaling dead ", electromagnet need oppositely magnetize, and overcomes 983.3% times of gravity, obviously considerably beyond normal conductor coil overload capacity, therefore cannot avoid " inhaling dead ".
In sum, permanent magnetism mixed magnetic floating device of the present invention be energy-conservation, be easy to control, practicable.Can well for attractive magnetic-levitation train.
The above-mentioned specific descriptions for preferred embodiment; those of ordinary skill in the art will appreciate that; embodiment described here is to help reader understanding's principle of the present invention, should be understood to that the protection domain invented is not limited to so special statement and embodiment.Everyly make various possible equivalent replacement or change according to foregoing description, be all considered to belong to the protection domain of claim of the present invention.

Claims (2)

1. based on a series-connection type permanent-magnet hybrid device for misconstruction, the electromagnet composition that every covering device comprises permanent magnet and connects with it, many covering devices are installed on below train bogie, thus realize mix suspending, it is characterized in that:
A) outer, the two poles of the earth width of U-shaped device that permanent magnet and the electromagnet of connecting with it are formed is greater than F type track width; B) the U-shaped device of some is installed on its line of centers below train bogie and overlaps with F type rail line of centers; C) the outer width L of track installation rear lower working face equals F type rail width; The two-plate outer width of U-shaped device is not equal to F type track width, forms misconstruction.
2. according to claim 1, for the series-connection type permanent-magnet hybrid device of magnetic-levitation train, it is characterized in that, some cover levitation devices are set in a bogie truck and organize into groups side by side.
CN201510737060.6A 2015-11-03 2015-11-03 Series-connection type permanent magnet hybrid suspension device based on dislocation structure Pending CN105346408A (en)

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Application Number Priority Date Filing Date Title
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106394307A (en) * 2016-10-28 2017-02-15 中国人民解放军国防科学技术大学 Electromagnetic and permanent magnet hybrid suspension control type maglev train anti-tight-attraction device and maglev train

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6502517B1 (en) * 1998-01-19 2003-01-07 Alstom Anlagen-Und Automatisierungstechnik Gmbh Arrangement for operating a transportation system with a magnetic levitation vehicle
US20100126374A1 (en) * 2008-11-23 2010-05-27 Qigen Ji Magnetostatic levitation and propulsion systems for moving objects
US20110277659A1 (en) * 2008-10-17 2011-11-17 Kwang Hwee Lee Dynamic magnetic suspension propeller
CN103318048A (en) * 2013-05-29 2013-09-25 西南交通大学 Series-connection type permanent-magnet hybrid levitation device for magnetic-levitation train
CN205311363U (en) * 2015-11-03 2016-06-15 西南交通大学 Mixed suspending device of tandem type permanent magnetism based on misconstruction

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6502517B1 (en) * 1998-01-19 2003-01-07 Alstom Anlagen-Und Automatisierungstechnik Gmbh Arrangement for operating a transportation system with a magnetic levitation vehicle
US20110277659A1 (en) * 2008-10-17 2011-11-17 Kwang Hwee Lee Dynamic magnetic suspension propeller
US20100126374A1 (en) * 2008-11-23 2010-05-27 Qigen Ji Magnetostatic levitation and propulsion systems for moving objects
CN103318048A (en) * 2013-05-29 2013-09-25 西南交通大学 Series-connection type permanent-magnet hybrid levitation device for magnetic-levitation train
CN205311363U (en) * 2015-11-03 2016-06-15 西南交通大学 Mixed suspending device of tandem type permanent magnetism based on misconstruction

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106394307A (en) * 2016-10-28 2017-02-15 中国人民解放军国防科学技术大学 Electromagnetic and permanent magnet hybrid suspension control type maglev train anti-tight-attraction device and maglev train
CN106394307B (en) * 2016-10-28 2018-11-06 中国人民解放军国防科学技术大学 Hybrid suspension of electromagnets and permanent magnets control type magnetic-levitation train is anti-to inhale dead device and magnetic-levitation train

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