CN103633748A - Wireless power supply system for electromagnetic resonance type railway locomotive - Google Patents
Wireless power supply system for electromagnetic resonance type railway locomotiveDownload PDFInfo
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- CN103633748A CN103633748ACN201310571922.3ACN201310571922ACN103633748ACN 103633748 ACN103633748 ACN 103633748ACN 201310571922 ACN201310571922 ACN 201310571922ACN 103633748 ACN103633748 ACN 103633748A
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Abstract
Translated fromChinese
Description
Technical field
Wireless power transmission technology is one of most active hot research direction in current electrical engineering field, it integrates basic research and application study, be that of exploring of the outer academia of Present Domestic and industrial quarters is multidisciplinary, new research field and the advanced subject of strong intersection, contain many technical fields such as electromagnetic field, power electronic technology, electric power system, control technology, physics, materialogy, information technology.Adopt wireless power mode can effectively overcome all kinds of defects that electric wire connected mode exists, realize freely powering of electronic apparatus, there is important application expection and vast potential for future development.
Electromagnetic resonance formula railway locomotive wireless power supply system of the present invention relates to a kind of easy construction, and the wireless power transmission electromagnetic resonance coupling technique that system is convenient, stable, safe and reliable, for the wireless power of railway locomotive provides technology model.Avoided the drawback of existing railway locomotive powering mode, eliminate the friction between original pantograph and power transmission line, reduce the maintenance cost that railway is in operation, reduce the impact on car body operational efficiency of the air drag that brought by pantograph simultaneously, for further improving train running speed, make preparation, and market prospects are wide.
Background technology
Wireless power transmission technology can be divided into three kinds: the first is inductive coupling type electric energy transmission, it utilizes loosely coupled transformer principle to pass can, generally there is the iron core apparatus that reduces loop magnetic resistance in transmitting terminal and receiving terminal, is applicable to small-power, short-range application scenario.The second is electromagnetic coupled resonant mode delivery of electrical energy, is applicable to the Energy Transfer of moderate distance by inductance on the resonator of high quality factor and distributed capacitor generation resonance transmitting energy.The third is electromagnetic radiation formula delivery of electrical energy, and in this technology, electric energy is converted into microwave form, and transmission range exceedance km, can realize the teletransmission of electric energy.Wherein electromagnetic coupled harmonic technology utilizes non-radiative electromagnetic field near-field region to complete delivery of electrical energy, than induction biography energy, has had very large expansion in transmission range on the one hand; Compare on the other hand electromagnetic radiation formula and pass energy, near-field region energy has radiationless feature, and this technology has good fail safe, therefore obtains at present very large concern and research.
Summary of the invention
Technical problem to be solved by this invention is, a kind of electromagnetic resonance formula railway locomotive wireless power supply system has been proposed, avoided pantograph in traditional railway locomotive power supply mode existence and with the high-speed friction of current supply line, overcome conventional locomotive supply power mode and need to regularly replace pantograph and the supply line severe drawback of wearing and tearing, reduced the air drag being brought by pantograph in train high-speed cruising simultaneously, for improving design speed per hour, locomotive provides possibility, for the wireless power of railway locomotive provides safety and stability, concrete tangible technology model.
The technical solution adopted in the present invention is: electromagnetic resonance formula railway locomotive wireless power supply system, is provided with power subsystem (1), for electric power system provides input power; Rectification filtering module (2), is transformed into direct current by the alternating current of power subsystem input; Copped wave power oscillating circuit (3), for being converted to the direct current of rectification filtering module input to adapt to the alternating current that bearing power requires; Signal controlling module (4), controls the output voltage values of chopper circuit to realize the balance of input power and power output; Electromagnetic field emissions circuit (5), the alternating electromagnetic field producing for launching copped wave power oscillating circuit; Electromagnetic field receiving coil (6), receives the alternating magnetic field that electromagnetic field emissions circuit is launched; Rectifying and wave-filtering copped wave module (7), the alternating current that electromagnetic field receiving coil is received is converted to the constant direct current of magnitude of voltage; Inversion module (8), the direct current that rectifying and wave-filtering copped wave module is exported is modulated into the alternating current of required frequency, for locomotive (9) provides driving power.
Described rectification filtering module (2) is comprised of bridge rectifier and filter circuit two parts, the high-power bridge circuit that rectifying part utilizes IGBT to form becomes direct current by alternating current, filtering part is connected between rectification circuit territory copped wave power oscillating circuit simultaneously, in order to Eliminate highter harmonic, the direct current of output constant voltage.
Described copped wave power oscillating circuit (3) is comprised of chopper circuit and half-bridge power push-pull circuit, wherein chopper circuit is subject to Single-chip Controlling in signal control circuit (4), to control its output voltage values, the switching frequency of half-bridge power push-pull circuit is fixed, consistent with the resonance frequency of transmitting circuit.
Described signal control circuit (4) is comprised of power-sensing circuit and single chip machine controlling circuit.The power signal that power-sensing circuit detects converts and delivers to single chip machine controlling circuit through A/D, and single-chip microcomputer will compare with the power threshold prestoring, and regulates the output voltage index of chopper circuit in (3) according to comparative result.
Described electromagnetic field emissions circuit (5) is comprised of metallic conductor, makes somebody a mere figurehead directly over locomotive, and its resonance frequency and supply frequency are consistent, to guarantee lower reflection coefficient, and the alternating electromagnetic field producing for launching copped wave power oscillating circuit.
The coil that described electromagnetic field receiving coil (6) is turned to by multiturn metallic conductor forms, be positioned at locomotive directly over, receiving coil has just been considered the frequency of power supply when making, receiving coil and the supply frequency produced are consistent, to guarantee the receiving coil maintenance resonance condition that is in operation, in the mode being coupled by resonance, realize the efficient transmission of energy.
Described rectifying and wave-filtering copped wave module (7) is comprised of bridge rectifier, filter circuit, chopper circuit, the AC rectification that wherein bridge rectifier obtains coil becomes direct current, filter circuit is eliminated the high order harmonic component in circuit, and chopper circuit is transformed into filtered direct current the direct current of constant output voltage subsequently.
Described inversion module (8) is comprised of power frequency inverter circuit, and the alternating current that is transformed into required frequency for the direct current that (7) are exported is to offer the load of rear class locomotive.
Electromagnetic resonance formula railway locomotive wireless power supply system of the present invention is the electric power system that adopts power subsystem, rectification filtering module, copped wave power oscillating circuit, electromagnetic field emissions coil, electromagnetic field receiving coil, rectifying and wave-filtering copped wave module, inversion module and locomotive load to form.This system avoided pantograph in traditional railway locomotive power supply mode existence and with the high-speed friction of current supply line, overcome conventional locomotive supply power mode and need to regularly replace pantograph and the supply line severe drawback of wearing and tearing, reduced the air drag being brought by pantograph in train high-speed cruising simultaneously, for improving design speed per hour, locomotive provides possibility, for the wireless power of railway locomotive provides concrete tangible technology model, also the application for radio energy-transmitting technology provides sample.
Accompanying drawing explanation
Fig. 1 is allomeric function block diagram of the present invention;
Fig. 2 is structural representation of the present invention;
Fig. 3 is the structure chart of electromagnetic emission circuit;
Fig. 4 is the structure chart of electromagnetism receiving coil;
Fig. 5 is the coupling schematic diagram of electromagnetic emission circuit and receiving coil.
Wherein:
10: electromagnetic field emissions circuit 11: be insulated the electromagnetic field receiving coil that material covers
1 32: second line of departure terminal point 1 of 31: the first line of departure terminal points
33: 1 34: first line of departure terminal point 2 of last root line of departure terminal point
35: the second line of departure terminal points 2 36: last root line of departure terminal point 2
51: receiving coil surface coverage insulating material
Embodiment
Below in conjunction with embodiment and accompanying drawing, electromagnetic resonance formula railway locomotive wireless power supply system of the present invention is made and being explained.
As shown in Figure 1, electromagnetic resonance formula railway locomotive wireless power supply system of the present invention, is provided with power subsystem (1), for electric power system provides input power; Rectification filtering module (2), is transformed into direct current by the alternating current of power subsystem input; Copped wave power oscillating circuit (3), for being converted to the direct current of rectification filtering module input to adapt to the alternating current that bearing power requires; Signal controlling module (4), is comprised of power-sensing circuit and single chip machine controlling circuit.The power signal that power-sensing circuit detects converts and delivers to single chip machine controlling circuit through A/D, single-chip microcomputer will compare with the power threshold prestoring, according to comparative result, regulate the output voltage index of chopper circuit in (3), control the output voltage values of chopper circuit to realize the balance of input power and power output, in this example, default copped wave output voltage values is 25kV, power threshold is 21560kW, and magnitude of voltage and power threshold can be made adjustment according to requiring; Electromagnetic field emissions circuit (5), the alternating electromagnetic field producing for launching copped wave power oscillating circuit, this circuit was measured natural resonance frequency before using after setting up, and mate with the centre frequency of power subsystem (1) by series connection or shunt capacitance, transmitting circuit (5) resonance frequency after coupling is consistent with the centre frequency of power subsystem (1), to guarantee lower reflection coefficient; Electromagnetic field receiving coil (6), receive the alternating magnetic field that electromagnetic field emissions circuit is launched, this coil mates with power subsystem (1) and transmitting circuit (5) before use, matching way is for comparing according to the frequency of the own resonance frequency of circuit and power subsystem (1) and transmitting circuit (5), by series connection or shunt capacitance, the own resonance frequency of coil and the centre frequency of power supply are consistent, to realize the resonant mode power supply of system, in addition all rear access of the receiving coil series connection rectifying and wave-filtering copped wave modules (7) in train top; Rectifying and wave-filtering copped wave module (7), the alternating current that electromagnetic field receiving coil is received is converted to the constant direct current of magnitude of voltage; Inversion module (8), the direct current that rectifying and wave-filtering copped wave module is exported is modulated into the alternating current of required frequency, for locomotive (9) provides driving power.
As shown in Figure 2, described electromagnetic field emissions circuit (10) be positioned at locomotive directly over, the type of locomotive using in this example is bullet train group CRH380A.Electromagnetic field emissions circuit is selected the Ritz copper cash of radius 20mm, in three wires, the middle wire is positioned at the position of rail center, because selecting the bodywork height of vehicle CRH380A, be 3700mm, design conductor height is distance Iron road, wire axle center rail highest point 4000mm, all the other two wires are arranged in a distance center traverse shaft alignment left side and 1100mm place to the right, and three wires are in same level, with railroad track place plane parallel, the height of the quantity of its wire and the mode of layout and layout and the material of selected conductor and model can be adjusted according to actual needs, this arrangement is ripe, reliably, wind-engaging rain shadow rings less, only need in existing railway power supply structure, transform and can realize, the more other forms of transmitting circuit of cost is low.Electromagnetic field receiving coil (11) is positioned at roof, and coil top is coated with insulating material, and in this example, selecting thickness is the carbon fibre of 4mm, and the thickness selected and insulating material used of insulating material type can be made adjustment according to actual conditions.
As shown in Figure 3, described electromagnetic field emissions circuit (10) be positioned at locomotive directly over.The order of connection of three strip conductors is that first line of departure terminal point 1 (31) is connected with second line of departure terminal point 1 (32), second line of departure terminal point 2 (35) is connected with last root line of departure terminal point 2 (36), first line of departure terminal point 2 (34) and last root line of departure terminal point 1 (33) are connected on respectively the two ends of power subsystem (1), in figure, direction shown in arrow is the flow direction of a certain moment electric current in conductor, such connected mode can make the magnetic field intensity stack between adjacent two conductors, and the design has utilized the magnetic field superposeing between wire to carry out energy transmission.First line of departure terminal point 2 (34) can be adjusted according to construction requirement in the distance along guide rail direction with last root line of departure terminal point 1 (33), this routine selected distance is 10km, the quantity of conductor can require to adjust according to practice of construction, but that connection principle still needs is consistent with the design.
As shown in Figure 4, described electromagnetic field receiving coil (11) is formed by metallic conductor coiling, the copper cash of this routine actionradius 4mm starts from center to being counterclockwise coiling 45 circles, overall diameter is 1550mm, interior diameter is 10mm, radial pitch is 17mm, and material and the radius of shape, size, the number of turn and the conductor of institute's coiling receiving coil all can be adjusted according to concrete condition.
As shown in Figure 5, described electromagnetic field emissions circuit (10) and the coupled modes of electromagnetic field receiving coil (11) are as shown in the figure, because the bodywork height with reference to vehicle CRH380A is 3700mm, design transmitting conductor height is distance Iron road, wire axle center rail highest point 4000mm, in three transmitting wires, the middle wire is positioned at the position of rail center, all the other two transmitting wires are arranged in a distance center traverse shaft alignment left side and 1100mm place to the right, and three transmitting wires are in same level, with railroad track place plane parallel, the difference in height of transmitting wire and roof is 300mm, electromagnetic field receiving coil (11) is laid on locomotive top, because modern railways locomotive mostly is distributed power locomotives, respectively save all dynamic drivings of compartment, therefore the power that locomotive needs when starting is very large, the present invention requires respectively to save top, compartment an electromagnetic field receiving coil (11) is at least installed, in this example, respectively save top, compartment and all have two receiving coils, and access rectifying and wave-filtering copped wave module (7) after the series connection of the coil of full car.On coil, be coated with insulating material (51), and roof material is all selected insulating material, if roof is selected metal material, metal can produce eddy current under the effect of alternating electromagnetic field, the loss of increase system, the efficiency of reduction locomotive, and dangerous property, in this example, select this new material of carbon fibre not only to insulate and intensity higher, corrosion-resistant.The thickness of the carbon fibre of selecting in this example is 4mm, be fitted in closely the surface of car, replaced original pantograph, reduced air drag, for the further speed-raising of car body provides possibility, selected cladding material and thickness can be made adjustment according to construction requirement, in this example, select this new material of carbon fibre, not only insulation but also intensity are higher, corrosion-resistant, and the thickness of the carbon fibre of selecting is 4mm.
Claims (7)
1. electromagnetic resonance formula railway locomotive wireless power supply system, is characterized in that being provided with: electromagnetic field emissions circuit (5), the alternating electromagnetic field producing for launching copped wave power oscillating circuit; Electromagnetic field receiving coil (6), receives the alternating magnetic field that electromagnetic field emissions circuit is launched.
2. electromagnetic resonance formula railway locomotive wireless power supply system according to claim 1, be further characterized in that, described electromagnetic field emissions circuit (5) being arranged in directly over locomotive symmetrically, all wires are in same level, with railroad track place plane parallel, and not there is not physical contact with locomotive top.
3. electromagnetic resonance formula railway locomotive wireless power supply system according to claim 1, be further characterized in that, the order of connection of electromagnetic field emissions circuit (5) conductor is that first line of departure terminal point 1 (31) is connected with second line of departure terminal point 1 (32), second line of departure terminal point 2 (35) is connected with last root line of departure terminal point 2 (36), by " S " type, connect, the like, first line of departure terminal point 2 (34) and last root line of departure terminal point 1 (33) are connected on respectively the two ends of power subsystem (1).
4. electromagnetic resonance formula railway locomotive wireless power supply system according to claim 1, be further characterized in that, described electromagnetic field emissions circuit (5), after the construction of line, before using, need to measure the own resonance frequency of circuit, and with the centre frequency comparison of power subsystem (1), according to comparative result, the own resonance frequency of electromagnetic field emissions circuit (5) is adjusted to power subsystem (1) and is equated.
5. electromagnetic resonance formula railway locomotive wireless power supply system according to claim 1, be further characterized in that, described electromagnetic field receiving coil (6), before being arranged on roof, need to measure the own resonance frequency of coil, and with the centre frequency comparison of power subsystem (1), according to comparative result, the own resonance frequency of electromagnetic field receiving coil (6) is adjusted to power subsystem (1) and is equated.
6. electromagnetic resonance formula railway locomotive wireless power supply system according to claim 1, is further characterized in that, described electromagnetic field receiving coil (6), at least installs one on every joint compartment, and each coil is connected in series.
7. electromagnetic resonance formula railway locomotive wireless power supply system according to claim 1, be further characterized in that, described electromagnetic field receiving coil (6), covering insulating material (51) after being arranged on roof, and roof material is all used insulating material.
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| CN201310571922.3ACN103633748B (en) | 2013-11-12 | 2013-11-12 | Electromagnetic Resonance Railway Locomotive Wireless Power Supply System |
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Cited By (6)
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| CN104362774A (en)* | 2014-11-28 | 2015-02-18 | 中南大学 | Magnetic coupling resonant wireless power transmission system for mine hoisting container |
| CN105471122A (en)* | 2015-12-30 | 2016-04-06 | 东南大学 | Wireless power supply system for straddle type monorail |
| CN105576851A (en)* | 2015-12-30 | 2016-05-11 | 东南大学 | Wireless power supply system of suspension type monorail |
| TWI604975B (en)* | 2015-07-17 | 2017-11-11 | 松下知識產權經營股份有限公司 | Power wire retraction device and contactless insulated trolley using the same |
| CN108075575A (en)* | 2016-11-15 | 2018-05-25 | 天津中德应用技术大学 | It is wirelessly transferred electric power supply system for subway and its charging method |
| CN113644752A (en)* | 2021-07-30 | 2021-11-12 | 中车长江车辆有限公司 | Railway vehicle power supply system |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104362774A (en)* | 2014-11-28 | 2015-02-18 | 中南大学 | Magnetic coupling resonant wireless power transmission system for mine hoisting container |
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| TWI604975B (en)* | 2015-07-17 | 2017-11-11 | 松下知識產權經營股份有限公司 | Power wire retraction device and contactless insulated trolley using the same |
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| CN105576851A (en)* | 2015-12-30 | 2016-05-11 | 东南大学 | Wireless power supply system of suspension type monorail |
| CN105471122B (en)* | 2015-12-30 | 2018-08-10 | 东南大学 | A kind of single-track beam support wireless power supply system |
| CN108075575A (en)* | 2016-11-15 | 2018-05-25 | 天津中德应用技术大学 | It is wirelessly transferred electric power supply system for subway and its charging method |
| CN108075575B (en)* | 2016-11-15 | 2023-12-19 | 天津中德应用技术大学 | Wireless transmission subway power supply system and its charging method |
| CN113644752A (en)* | 2021-07-30 | 2021-11-12 | 中车长江车辆有限公司 | Railway vehicle power supply system |
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| CN103633748B (en) | 2015-09-09 |
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