CN102931735A - Non-contact power supply system and method for mobile device moving along track - Google Patents
Non-contact power supply system and method for mobile device moving along track Download PDFInfo
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- CN102931735A CN102931735A CN2012104410542A CN201210441054A CN102931735A CN 102931735 A CN102931735 A CN 102931735A CN 2012104410542 A CN2012104410542 A CN 2012104410542A CN 201210441054 A CN201210441054 A CN 201210441054A CN 102931735 A CN102931735 A CN 102931735A
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Abstract
The invention relates to a non-contact power supply system for a mobile device moving along a track. The system comprises a first rectifier, an inverter, a transformer and a second rectifier, wherein the first rectifier converts alternating current which is input from the outside into direct current; the inverter converts the direct current which is output by the first rectifier into alternating current; the transformer comprises a primary iron core and a secondary iron core which are separated, a primary winding is wound on the primary iron core, and a secondary winding is wound on the secondary iron core; and the second rectifier is connected with the mobile device, the alternating current which is output by the inverter is input into the primary winding, the sensed alternating current in the secondary winding is converted into direct current through the second rectifier, and then the direct current is provided for the mobile device. The invention also relates to a non-contact power supply device of the mobile device moving along the track. According to the system and the method, the operation is simple, the restriction of speed of the mobile device in the prior is reduced, and energy conservation and safety are achieved.
Description
Technical field
The present invention relates to a kind of electric power system, particularly for the contactless power supply system of Orbiting mobile device.
The invention still further relates to a kind of non-contact power method for Orbiting mobile device.
Background technology
Subway, light rail train and magnetic suspension train etc. all belong to the conveying arrangement along rail moving, and the loading dolly on the production line also belongs to the device that moves to transmit goods along special production line.All need power supply during these device operations, traditional supply power mode has two kinds: " dragging plait " or laying are subjected to trajectory.So-called " dragging plait " refers to adopt flexible cable supply lines to be extended to the maximum distance that needs.Yet make when powering in this way, line loss is serious, poor reliability.Laying is subjected to trajectory to refer to lay special-purpose power supply rail along the shiftable haulage line of device, this power supply rail be fixed on mobile device on be subjected to fluent to contact, by this be subjected to fluent with delivery of electrical energy to mobile device, this is the present the most general current collection mode of application.
Fig. 1 is traditional schematic diagram that is subjected to the trajectory electric power system.Traditional be subjected to trajectory electric power system 10 by ground installation with the alternating current 1 on ground by rectifier 2 rectifying and wave-filterings, be translated into direct current; Then two that this direct current directly are communicated to the track both sides that are arranged on mobile device are subjected to (one connects galvanic anode, and another root connects galvanic negative terminal) on the trajectory 3; Simultaneously at mobile device 5 pantagraph current collectors 4 are installed, by pantagraph current collector 4 be subjected to contacting of trajectory 3, be load with being subjected to direct current on the trajectory 3 to be transferred to mobile device 5() on.
Mainly there is following some deficiency in the method for supplying power to of this contact:
At first, in order to ensure pantagraph current collector be subjected to strict contact between the trajectory, in the process of system's operation, larger external force need to be arranged be subjected to trajectory so that pantagraph current collector presses, can increase like this friction between the two, limit the acceleration of mobile device, therefore be unfavorable for the raising of mobile device speed.
Simultaneously because pantagraph current collector and be subjected to the long-term friction of trajectory, pantagraph current collector and be subjected to the trajectory all will be through frayed, the effect of friction even may damage mobile device, meeting when serious so that whole transportation system can't normally move.In this case, need to stop transport and carry out the inspection and maintenance of equipment, cause high cost.
In addition, the powering mode of whole system is more inflexible, is unfavorable for controlling flexibly and saving electric energy.
The problems referred to above that produce in order to solve contact method of supplying power to of the prior art need a kind of more advanced contactless power supply system of research and method, and the present invention is based on this just.
Summary of the invention
Traditional to be used for the electric power system of Orbiting mobile device and the defective such as component wear that method causes is serious, it is limited to accelerate, maintenance and maintenance workload are huge in order solving, to the present invention proposes a kind of novel contactless power supply system and the method that are used for Orbiting mobile device.
According to an aspect of the present invention, proposed a kind of contactless power supply system for Orbiting mobile device, having comprised: the alternating current of outside input has been converted to galvanic the first rectifier; The direct current of the first rectifier output is converted to the inverter of alternating current; Transformer, elementary iron core and secondary iron core that it comprises separation are wound with primary coil on the elementary iron core, are wound with secondary coil on the secondary iron core; The second rectifier that is connected with mobile device.Wherein the alternating current of this inverter output is inputted primary coil, and the alternating current of responding in the secondary coil changes direct current into by the second rectifier, offers afterwards mobile device.
In one embodiment, primary coil is fixed on the power rail of mobile device, and secondary coil is fixed on the mobile device.
In one embodiment, primary coil comprises the some primary coil parts that are arranged in apart from each other on the power rail, and the length of each primary coil part is greater than the length of mobile device.
In one embodiment, inverter only with primary coil in the primary coil corresponding with the residing zone of mobile device part and two adjacent primary coil section divide and link to each other.
In one embodiment, the frequency of the alternating current of the first rectifier output is higher than the frequency of the alternating current of outside input.
In one embodiment, the waveform of the alternating current of inverter output comprises square wave or sine wave.
In one embodiment, the shape of the elementary iron core of transformer or secondary iron core comprises U-shaped iron core or E shaped iron core.
Another aspect of the present invention has proposed a kind ofly to use system according to the present invention to come method for the power supply of Orbiting mobile device.
The present invention has two-part transformer disconnected from each other by design, and two parts of transformer are installed in respectively on power rail and the mobile device, remedied power rail and the defective that is subjected to the fluid contact friction in the prior art, thereby be conducive to prolong the useful life of mobile device and promote its acceleration upper limit.
In addition, the present invention adopts the mode that primary coil is divided into several primary coils parts to arrange primary coil on the electrical supply rail, thereby segmentation is excitatory, this be conducive to efficient, energy-conservation, utilize electric energy neatly, for the operation of whole system brings very big facility, simultaneously when certain primary coil partly runs into fault, can not affect whole system, strengthen the fault-resistant ability of system.
Description of drawings
To and come with reference to the accompanying drawings the present invention is described in more detail based on embodiment hereinafter.Wherein:
Fig. 1 is traditional schematic diagram that is subjected to the trajectory electric power system;
Fig. 2 is the schematic diagram according to contactless power supply system of the present invention;
Fig. 3 is the schematic diagram according to the first rectifier of contactless power supply system of the present invention among the embodiment;
Fig. 4 a is the schematic diagram according to the inverter of contactless power supply system of the present invention among the embodiment;
Fig. 4 b is the schematic diagram according to the voltage waveform of the inverter of contactless power supply system of the present invention output among the embodiment;
Fig. 5 is the schematic diagram according to the transformer of contactless power supply system of the present invention among the embodiment;
Fig. 6 is the schematic diagram according to contactless power supply system of the present invention with a plurality of primary coil parts.
Embodiment
The invention will be further described below in conjunction with accompanying drawing.
Fig. 2 is according to the contactless power supply system 20 for Orbiting mobile device of the present invention.Wherein the alternating current 6 that provides of ground power supply is at first by the first rectifier 7.The first rectifier 7 is converted to direct current with alternating current 6 rectifying and wave-filterings that ground power supply provides.
In one embodiment, the alternating current 6 that provides of ground power supply is three-phase alternating current.The first rectifier 7 for example is the three-phase diode control rectifying circuit not of routine shown in Figure 3, and three-phase alternating current 6 is converted to direct current.Because those skilled in the art readily understand the operation principle of the first rectifier 7 among this embodiment with reference to accompanying drawing 3, no longer specifically describe this circuit here.
With reference to Fig. 2, the direct current of the first rectifier 7 outputs is input to inverter 8.Inverter 8 is alternating current with this current conversion.
In a preferred embodiment, the frequency of the alternating current of the inverter 8 output frequency of the alternating current 6 that power supply provides that is above the ground level.In one embodiment, inverter 8 output frequencies are the alternating current of 20kHz ~ 40kHz
Fig. 4 a shows the circuit diagram of inverter 8.Control signal C wherein
1And C
2Control inversion pipe V
1, V
2, V
3, and V
4V wherein
1And V
4Simultaneously conducting or disconnection, V
2And V
3Simultaneously conducting or disconnection.
In one embodiment, in the front half period, control signal makes V
1And V
4Conducting, and make V
2And V
3Disconnect, at this moment output end voltage U
AbCharacteristics be:
Polarity: a end is "+", and the b end is "-", U
AbBe "+";
Amplitude: U
m=U
D(U
mBe the amplitude of inverter 8 output voltages, U
DThe amplitude of the input voltage of accepting for inverter 8.）
In the later half cycle, control signal makes V
2And V
3Conducting, and V
1And V
4Disconnect, at this moment output end voltage U
AbCharacteristics be:
Polarity: a end is "-", and the b end is "+", U
AbBe "-";
Amplitude: U
m=U
D
So replace down again and again, then a, the output of b two ends is alternating voltage.
In one embodiment, the waveform of the alternating voltage of a, the output of b two ends is the square wave shown in Fig. 4 b.
In another embodiment, can pass through conducting and the opening time of each inversion pipe of control inverter 8, so that the waveform of the alternating voltage of a of inverter 8, the output of b two ends is sinusoidal wave.
Referring again to Fig. 2, the alternating current of inverter 8 outputs is input to the primary coil on the elementary iron core (it is arranged in left side half one of transformer 9 among Fig. 2) that is wrapped in transformer 9.Because electromagnetic induction principle, the secondary coil that is wrapped on the secondary iron core (it is positioned at right side half one of transformer 9 among Fig. 2) of transformer 9 will produce the induced voltage that exchanges, this induction alternating current is converted to direct current by the second rectifier 10, offers Orbiting mobile device 11.
Fig. 5 is the schematic diagram of transformer 9.In one embodiment, transformer 9 comprises two iron cores of separation, namely is positioned at the elementary iron core and the secondary iron core that is positioned at the right side in left side in Fig. 5.The outside of elementary iron core is wound with the primary coil that electric current can pass through, and the outside of secondary iron core is wound with the secondary coil that electric current can pass through.Numeral 12 two parts that indicate are air gap among Fig. 5, namely do not have physical contact between two iron cores, are unsettled each other.
In one embodiment, two of transformer 9 iron cores are U-shaped iron core.
In another embodiment, two of transformer 9 iron cores are the E shaped iron core.
In one embodiment, primary coil be fixed on mobile device 11 with the parallel power rail of its operation rail on, secondary coil is fixed on the mobile device 11, moves with mobile device 11.The delivery of electrical energy that transformer 9 provides ground power supply by electromagnetic induction principle does not need the contact between mobile device 11 and the power rail simultaneously to mobile device 11.This had both been avoided because the wearing and tearing that contact friction causes, and in the useful life of having improved mobile device 11, almost nil frictional force has reduced the resistance in mobile device 11 accelerators effectively simultaneously, is conducive to improve the speed of mobile device 11.
Referring again to Fig. 2, the second rectifier 10 is direct current with the current transitions of the secondary coil output of transformer 9.The operation principle of the second rectifier 10 and the first rectifier 7 are basically identical, one of ordinary skill in the art will readily recognize that herein to repeat no more.
Just can be mobile device 11(load through the direct current after 10 rectifications of the second rectifier) powered.
In one embodiment, along the power rail laying primary coil (twining the coil of the elementary iron core of transformer 9) parallel with the operation rail of mobile device 11, primary coil is divided into the primary coil part that several are separated from each other according to length and the speed of service of mobile device 11, and the length of each primary coil part is all greater than the length of mobile device 11.When mobile device 11 moves to when dividing corresponding position with some primary coil section at orbit, the output of inverter 8 is accessed this primary coil part and two adjacent primary coil parts of front and back thereof, carry out excitatory, other locational primary coil part no powers.Do not need like this to all primary coil section on the whole power rail divide carry out excitatory, can be efficiently, flexibly, low-loss land productivity electric energy.And, because each primary coil partly is mutually independent, when certain primary coil section is divided when fault occurring, remaining primary coil part normal power supply, unaffected.Only need in time to change the primary coil part of fault, can not cause large-scale infringement to whole system.
On the other hand, the present invention has also designed by contactless power supply system according to the present invention and has come method for mobile device power supply: to system according to the present invention 20 power supplies, electric current is input in the first rectifier 7 of system 20 by ground power supply.The first rectifier 7 becomes direct current to input to inverter 8 this current conversion, the current conversion that inverter 8 will be inputted wherein becomes alternating current to input to the primary coil of transformer 9, the secondary coil of transformer 9 produces the induction alternating current, it is delivered to the second rectifier 10 to convert direct current to, again this direct current is offered mobile device 11.
In one embodiment, the method according to this invention adopts the excitatory method of segmentation to move according to system 20 of the present invention: as shown in Figure 6, with the primary coil of transformer 9 take " part " as the unit broken-up laying on power rail, namely arrange several primary coils parts that are separated from each other (namely 911 ~ 915 etc.) in power rail, each primary coil part all is connected to the output of inverter 8 by switch, the secondary coil of transformer 9 is denoted as 920, and the length of each primary coil part is all greater than the length of mobile device 11; When operational system 20, at first detect mobile device 11 residing positions, when supposing that mobile device 11 moves to the position corresponding with primary coil part 913, be about to the switch closure of 912,913,914 3 primary coils parts to be connected to the output of inverter 8.Remaining primary coil part no power is not worked.When mobile device 11 moved to the position corresponding with primary coil part 912, the switch of closed primary coil part 911 disconnected the switch of primary coil part 914; When mobile device 11 moved to the position corresponding with primary coil part 914, the switch of closed primary coil part 915 disconnected the switch of primary coil part 912.Any like this position only have mobile device 11 positions corresponding with and front and back altogether three primary coils part by excitatory power supply.So can put forward high-octane service efficiency, reduce the energy loss of whole system 20, and be convenient to neatly operating system 20, improve simultaneously the fault-resistant ability of system 20.
Although invention has been described with reference to preferred embodiment, without departing from the scope of the invention, can carry out various improvement to it.The present invention is not limited to disclosed embodiment in the literary composition, but comprises all technical schemes in the scope that falls into claim.
Claims (8)
1. contactless power supply system that is used for Orbiting mobile device comprises:
The alternating current of outside input is converted to galvanic the first rectifier;
The direct current of described the first rectifier output is converted to the inverter of alternating current;
Transformer, elementary iron core and secondary iron core that it comprises separation are wound with primary coil on the described elementary iron core, are wound with secondary coil on the described secondary iron core;
The second rectifier that is connected with mobile device,
It is characterized in that, the alternating current of described inverter output is inputted described primary coil, and the alternating current of responding in the described secondary coil changes direct current into by described the second rectifier, offers afterwards described mobile device.
2. system according to claim 1 is characterized in that, described primary coil is fixed on the power rail of described mobile device, and described secondary coil is fixed on the described mobile device.
3. system according to claim 1 and 2 is characterized in that, described primary coil comprises the some primary coil parts that are arranged in apart from each other on the power rail, and the length of each primary coil part is greater than the length of mobile device.
4. system according to claim 3 is characterized in that, described inverter only with described primary coil in the primary coil corresponding with the residing zone of described mobile device part and two adjacent primary coil section divide and link to each other.
5. system according to claim 1 and 2 is characterized in that, the frequency of the alternating current of described the first rectifier output is higher than the frequency of the alternating current of outside input.
6. system according to claim 1 and 2 is characterized in that, the waveform of the alternating current of described inverter output comprises square wave or sine wave.
7. system according to claim 1 and 2 is characterized in that, the described elementary iron core of described transformer or the shape of described secondary iron core comprise U-shaped iron core or E shaped iron core.
8. use according to each described system in the claims and come method for the power supply of Orbiting mobile device.
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| CN201210441054.2A CN102931735B (en) | 2012-11-07 | 2012-11-07 | Non-contact power supply system and method for mobile device moving along track |
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| CN102931735B CN102931735B (en) | 2015-03-25 |
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| CN103633747A (en) * | 2013-11-12 | 2014-03-12 | 天津工业大学 | Electromagnetic resonance wireless power supply system for subway |
| CN103779971A (en) * | 2014-01-29 | 2014-05-07 | 中国科学院电工研究所 | Movable type non-contact power supply system in which subsection power supply is adopted |
| CN104998420A (en) * | 2015-07-27 | 2015-10-28 | 东南大学 | Rail transport electronic toy train employing sectional switch-type wireless power supply |
| CN105914801A (en) * | 2016-05-17 | 2016-08-31 | 西南交通大学 | Segmented-switching wireless electric energy transmission system primary side power supply device and switching method thereof |
| CN106026209A (en) * | 2016-08-01 | 2016-10-12 | 安徽贝莱电子科技有限公司 | Non-contact power supply system |
| CN108082010A (en) * | 2017-08-24 | 2018-05-29 | 薛应东 | The application of railroad train electric power system |
| CN108808873A (en) * | 2017-05-03 | 2018-11-13 | 中车株洲电力机车研究所有限公司 | A kind of non-contact rail traffic power supply system |
| CN110549855A (en) * | 2019-09-16 | 2019-12-10 | 中车株洲电力机车有限公司 | Contactless induction power supply system of maglev train |
| CN111483323A (en) * | 2019-01-28 | 2020-08-04 | 中车株洲电力机车研究所有限公司 | Rail transit non-contact power supply system |
| DE102019123392B3 (en) * | 2019-09-02 | 2021-02-11 | Hiwin Technologies Corp. | LINEAR TRANSMISSION DEVICE WITH WIRELESS POWER SUPPLY |
| CN113492884A (en) * | 2020-03-20 | 2021-10-12 | 株洲中车时代电气股份有限公司 | Three-source hybrid power locomotive and traction transmission system thereof |
| WO2021208002A1 (en) * | 2020-04-16 | 2021-10-21 | 中车株洲电力机车研究所有限公司 | Method and system device for multiple load-bearing of linear motor for magnetic levitation transportation |
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| CN108808873B (en) * | 2017-05-03 | 2021-10-15 | 中车株洲电力机车研究所有限公司 | Non-contact rail transit power supply system |
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| CN111483323A (en) * | 2019-01-28 | 2020-08-04 | 中车株洲电力机车研究所有限公司 | Rail transit non-contact power supply system |
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| DE102019123392B3 (en) * | 2019-09-02 | 2021-02-11 | Hiwin Technologies Corp. | LINEAR TRANSMISSION DEVICE WITH WIRELESS POWER SUPPLY |
| CN110549855A (en) * | 2019-09-16 | 2019-12-10 | 中车株洲电力机车有限公司 | Contactless induction power supply system of maglev train |
| CN113492884A (en) * | 2020-03-20 | 2021-10-12 | 株洲中车时代电气股份有限公司 | Three-source hybrid power locomotive and traction transmission system thereof |
| WO2021208002A1 (en) * | 2020-04-16 | 2021-10-21 | 中车株洲电力机车研究所有限公司 | Method and system device for multiple load-bearing of linear motor for magnetic levitation transportation |
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Effective date of registration: 20181122 Address after: 410000 No. 301, Building A-1, Hunan Lugu Science and Technology Incubator Co., Ltd. No. 229 Tongzipo West Road, Changsha High-tech Zone, Hunan Province Patentee after: HUNAN YINHE TIANTAO TECHNOLOGY CO., LTD. Address before: 410012 Computer Factory of Changsha National Defense University of Science and Technology, Hunan Province Patentee before: Hunan Yinhe Electric Co., Ltd. |
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| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: Room 101-301, building D3, Jinrong Wangcheng science and Technology Industrial Park, 858 Purui West Road, Wangcheng economic and Technological Development Zone, Changsha City, Hunan Province, 410200 Patentee after: Hunan Tiantao Technology Co.,Ltd. Address before: 410000 No. 301, Building A-1, Hunan Lugu Science and Technology Incubator Co., Ltd. No. 229 Tongzipo West Road, Changsha High-tech Zone, Hunan Province Patentee before: HUNAN YINHE TIANTAO TECHNOLOGY Co.,Ltd. |