CN109672348A - A kind of high-speed maglev train power supply system - Google Patents
A kind of high-speed maglev train power supply system Download PDFInfo
- Publication number
- CN109672348A CN109672348A CN201710958148.XA CN201710958148A CN109672348A CN 109672348 A CN109672348 A CN 109672348A CN 201710958148 A CN201710958148 A CN 201710958148A CN 109672348 A CN109672348 A CN 109672348A
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- Prior art keywords
- power supply
- transformer
- bidirectional converter
- converter unit
- supply system
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M5/00—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases
- H02M5/40—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc
- H02M5/48—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc by combination of static with dynamic converters; by combination of dynamo-electric with other dynamic or static converters
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
The invention discloses a kind of high-speed maglev train power supply systems, including input transformer, the first bidirectional converter unit, the second bidirectional converter unit and the output transformer being sequentially connected, the input terminal of the input transformer is connected with middle pressure AC network, the first bidirectional converter unit and the second bidirectional converter unit, which are constituted, hands over straight friendship power supply circuit, for the adjustable alternating current of output amplitude, phase and frequency when train operates normally, and in train braking, by braking energy feedback to middle pressure AC network.High-speed maglev train power supply system of the invention has many advantages, such as that structure is simple, energy conservation and environmental protection.
Description
Technical field
The invention mainly relates to magnetic-levitation train technical fields, refer in particular to a kind of high-speed maglev train power supply system.
Background technique
High-speed magnetic floating is hot spot studied both at home and abroad at present, the domestic high-speed magnetic floating for also studying 600km speed per hour now
System, high-speed magnetic floating power supply system are one of important topics, are related to that can magnetic floating system operate normally；And current
Magnetic floating system in, due to the limitation of power supply system, the energy that can not be generated to vehicle braking be recycled, and cause energy unrestrained
Take.
Summary of the invention
The technical problem to be solved in the present invention is that, for technical problem of the existing technology, the present invention provides one
Kind of structure is simple, energy-saving and environment-friendly high-speed maglev train power supply system.
In order to solve the above technical problems, technical solution proposed by the present invention are as follows:
A kind of high-speed maglev train power supply system, including input transformer, the first bidirectional converter unit, second being sequentially connected
Bidirectional converter unit and output transformer, the input terminal of the input transformer are connected with middle pressure AC network, and described first pair
It is constituted to converter cell and the second bidirectional converter unit and hands over straight friendship power supply circuit, for exporting width when train operates normally
Value, the adjustable alternating current of phase and frequency, and in train braking, by braking energy feedback to middle pressure AC network.
As a further improvement of the above technical scheme:
The switch element of the first bidirectional converter unit and the second bidirectional converter unit is all made of great power conversion circuit IGBT.
It is connected between the input transformer and middle pressure AC network by input switch, is supplied for being cut off in the system failure
Electrical circuit.
The input switch is vacuum circuit breaker.
The input transformer uses and is integrated with the high leakage reactance input transformer of filter reactor.
The output end of the output transformer is connected with a switch block, switching of the output transformer in switch block
Switching of the lower realization between direct pulse mode and transformer mode.
The output transformer includes three single-phase transformers, has and takes out among the primary side winding of each single-phase transformer
Head, the head and end of the primary side winding are connected with the corresponding output phase of the second bidirectional converter unit；The switch block packet
First switch and the second switch is included, the first switch is connected with vice-side winding, and second switch is connected with centre tap.
The first bidirectional converter unit and the second bidirectional converter unit include two bidirectional converters.
Compared with the prior art, the advantages of the present invention are as follows:
Magnetic-levitation train power supply system of the invention is suitable for high-speed maglev train, electric energy can be provided for train, while can arrange
By the regenerative braking energy feedback of generation to AC network when vehicle is braked, the stabilization of DC bus-bar voltage is maintained, does not need to use
Chopper maintains the stabilization of DC bus-bar voltage, and reliability is higher, and system is more energy efficient.
Detailed description of the invention
Fig. 1 is the structural diagram of the present invention.
Fig. 2 is the structural schematic diagram that transformer is exported in the present invention.
Figure label indicates: 1, middle pressure AC network；2, input switch；3, input transformer；4, the first bidirectional converter list
Member；5, the second bidirectional converter unit；6, transformer is exported.
Specific embodiment
Below in conjunction with Figure of description and specific embodiment, the invention will be further described.
As shown in Figure 1, the high-speed maglev train power supply system of the present embodiment, including be sequentially connected input transformer 3,
One two-way converter cell 4, the second bidirectional converter unit 5 and output transformer 6, the input terminal of input transformer 3 and middle pressure
AC network 1 is connected, and the first bidirectional converter unit 4 and the second bidirectional converter unit 5 constitute and hand over straight friendship power supply circuit, is used for
Output amplitude, phase and frequency adjustable alternating current when train operates normally, and in train braking by braking energy feedback
To middle pressure AC network 1.Magnetic-levitation train power supply system of the invention is suitable for high-speed maglev train, can provide electric energy for train,
The stabilization of DC bus-bar voltage can be maintained in train braking by the regenerative braking energy feedback of generation to AC network simultaneously,
The stabilization that busbar voltage is maintained using chopper is not needed, reliability is higher, and system is more energy efficient.
When magnetic suspension train operation, control system calculates tractive force according to car speed, accelerometer, according to vehicle position
The stator current phase and amplitude that can calculate needs are set, so that tractive force required voltage amplitude and phase are calculated, and with
This given value as power supply system current transformer closed-loop control, exports the power supply of needs.Specifically, middle pressure AC network 1 passes through defeated
Enter transformer 3, be AC1000V alternating current by middle pressure AC conversion, alternating current is converted to by the first bidirectional converter unit 4
The controllable direct current energy of DC voltage, direct current energy are converted to amplitude, phase and frequency using the second bidirectional converter unit 5
All controllable alternating current is powered by stator switchyard to the stator winding coil of motor.When magnetic-levitation train braking, regeneration system
Energy will lead to DC bus-bar voltage rising, and regenerating braking energy inversion can be alternating current by the first bidirectional converter unit 4,
It is fed back to middle pressure AC network by input transformer 3, maintains the stabilization of DC bus-bar voltage.
In the present embodiment, pass through input switch 2(such as vacuum circuit breaker between input transformer 3 and middle pressure AC network 1) even
It connects, for cutting off current supply circuit in the system failure.Wherein input transformer 3 is integrated with filter using the design scheme of high leakage reactance
Wave reactor, reduces the volume of whole system, and connection type Dy11y11 is able to achieve to the electric energy for being fed back to AC network
The function being filtered.
In the present embodiment, the first bidirectional converter unit 4 and the second bidirectional converter unit 5 are all made of great power conversion circuit
IGBT is able to achieve four-quadrant operation range.Two bidirectional converter units constitute cross-straight-intersection power supply system, can export width
The all controllable alternating current of value, phase, frequency, while can hand over regenerative braking energy feedback to middle pressure when magnetic-levitation train is braked
Drift net 1 is used for other power supply units.Wherein the first bidirectional converter unit 4 and the second bidirectional converter unit 5 include two
A bidirectional converter, wherein two bidirectional converters in the first bidirectional converter unit 4 and the second bidirectional converter unit 5
DC side parallel.
In the present embodiment, the output end of output transformer 6 is connected with a switch block, exports transformer 6 in switch block
Switching under realize switching between direct pulse mode and transformer mode.As shown in Fig. 2, specifically, exporting transformer 6
Including three single-phase transformers, the centre of the primary side winding of each single-phase transformer has tap, the head and end of primary side winding
It is connected with the corresponding output end of the second bidirectional converter unit 5；Switch block includes first switch and the second switch, wherein first
Switch is connected with vice-side winding, and second switch is connected with centre tap；For the second bidirectional converter unit 5, there are two types of outputs
Mode: the direct pulse way of output and the transformer way of output.When train is in starting or deboost phase, biggish acceleration is needed
When, two sets of current transformers of the second bidirectional converter unit 5 are exported 6 primary side tap parallel output of transformer, and output transformer 6 is former
Play chokes reactor in side (first switch K1 is disconnected at this time, second switch K2 closure)；When the more demanding speed operation of train
When, two sets of current transformer series connection output after output transformer 6 boosts (first switch K1 is closed at this time, and second switch K2 is disconnected)；
K3 is in normally off in both modes.
The above is only the preferred embodiment of the present invention, protection scope of the present invention is not limited merely to above-described embodiment,
All technical solutions belonged under thinking of the present invention all belong to the scope of protection of the present invention.It should be pointed out that for the art
For those of ordinary skill, several improvements and modifications without departing from the principles of the present invention should be regarded as protection of the invention
Range.
Claims (8)
1. a kind of high-speed maglev train power supply system, which is characterized in that including be sequentially connected input transformer (3), first pair
To converter cell (4), the second bidirectional converter unit (5) and output transformer (6), the input of the input transformer (3)
End is connected with middle pressure AC network (1), and the first bidirectional converter unit (4) and the second bidirectional converter unit (5) are constituted and handed over
It is straight to hand over power supply circuit, for output amplitude, the adjustable alternating current of phase and frequency when train operates normally, and in train system
When dynamic, by braking energy feedback to middle pressure AC network (1).
2. high-speed maglev train power supply system according to claim 1, which is characterized in that the first bidirectional converter list
The switch element of first (4) and the second bidirectional converter unit (5) is all made of high-power IGBT.
3. high-speed maglev train power supply system according to claim 1, which is characterized in that the input transformer (3) with
It is connected between middle pressure AC network (1) by input switch (2), for cutting off current supply circuit in the system failure.
4. high-speed maglev train power supply system according to claim 3, which is characterized in that the input switch (2) is true
Empty breaker.
5. high-speed maglev train power supply system as claimed in any of claims 1 to 4, which is characterized in that described defeated
Enter transformer (3) use and is integrated with the high leakage reactance input transformer of filter reactor.
6. high-speed maglev train power supply system as claimed in any of claims 1 to 4, which is characterized in that described defeated
The output end of transformer (6) is connected with a switch block out, and the output transformer (6) is realized under the switching of switch block
Switching between direct pulse mode and transformer mode.
7. high-speed maglev train power supply system according to claim 6, which is characterized in that output transformer (6) packet
Three single-phase transformers are included, have tap, the head and end of the primary side winding among the primary side winding of each single-phase transformer
It is connected with the corresponding output phase of the second bidirectional converter unit (5)；The switch block includes first switch and the second switch, institute
It states first switch to be connected with vice-side winding, second switch is connected with centre tap.
8. high-speed maglev train power supply system as claimed in any of claims 1 to 4, which is characterized in that described
One two-way converter cell (4) and the second bidirectional converter unit (5) include two bidirectional converters.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710958148.XA CN109672348A (en) | 2017-10-16 | 2017-10-16 | A kind of high-speed maglev train power supply system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710958148.XA CN109672348A (en) | 2017-10-16 | 2017-10-16 | A kind of high-speed maglev train power supply system |
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| CN109672348A true CN109672348A (en) | 2019-04-23 |
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| CN201710958148.XA Pending CN109672348A (en) | 2017-10-16 | 2017-10-16 | A kind of high-speed maglev train power supply system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112537208A (en) * | 2019-09-23 | 2021-03-23 | 中车株洲电力机车研究所有限公司 | Starting method and device for magnetic suspension high-speed train |
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| CN101249806A (en) * | 2008-04-14 | 2008-08-27 | 北京交通大学 | Modular energy feedback type traction power set and control method |
| CN101286726A (en) * | 2008-06-12 | 2008-10-15 | 杭州西子孚信科技有限公司 | Driving device for electric machine and control method for driving motor |
| WO2011051096A2 (en) * | 2009-10-30 | 2011-05-05 | Siemens Aktiengesellschaft | An ac-dc converter and an inverter |
| CN102136809A (en) * | 2011-03-31 | 2011-07-27 | 上海磁浮交通发展有限公司 | Urban rail maglev train traction converter output device |
| CN103153683B (en) * | 2010-03-15 | 2015-08-26 | 同济大学 | Braking energy management system and control method thereof |
| CN105186918A (en) * | 2015-02-13 | 2015-12-23 | 江苏明伟万盛科技有限公司 | Track traffic regenerative braking energy feedback bidirectional conversion circuit based on IGBT |
| CN106026691A (en) * | 2016-05-30 | 2016-10-12 | 株洲中车时代电气股份有限公司 | Train main and auxiliary integrated traction converter capable of being axially controlled independently |
| CN206217647U (en) * | 2016-11-28 | 2017-06-06 | 株洲中车时代电气股份有限公司 | One kind hands over straight electric locomotive transmission device and system |
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2017
- 2017-10-16 CN CN201710958148.XA patent/CN109672348A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101249806A (en) * | 2008-04-14 | 2008-08-27 | 北京交通大学 | Modular energy feedback type traction power set and control method |
| CN101286726A (en) * | 2008-06-12 | 2008-10-15 | 杭州西子孚信科技有限公司 | Driving device for electric machine and control method for driving motor |
| WO2011051096A2 (en) * | 2009-10-30 | 2011-05-05 | Siemens Aktiengesellschaft | An ac-dc converter and an inverter |
| CN103153683B (en) * | 2010-03-15 | 2015-08-26 | 同济大学 | Braking energy management system and control method thereof |
| CN102136809A (en) * | 2011-03-31 | 2011-07-27 | 上海磁浮交通发展有限公司 | Urban rail maglev train traction converter output device |
| CN102136809B (en) * | 2011-03-31 | 2013-07-31 | 上海磁浮交通发展有限公司 | Urban rail maglev train traction converter output device |
| CN105186918A (en) * | 2015-02-13 | 2015-12-23 | 江苏明伟万盛科技有限公司 | Track traffic regenerative braking energy feedback bidirectional conversion circuit based on IGBT |
| CN106026691A (en) * | 2016-05-30 | 2016-10-12 | 株洲中车时代电气股份有限公司 | Train main and auxiliary integrated traction converter capable of being axially controlled independently |
| CN206217647U (en) * | 2016-11-28 | 2017-06-06 | 株洲中车时代电气股份有限公司 | One kind hands over straight electric locomotive transmission device and system |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112537208A (en) * | 2019-09-23 | 2021-03-23 | 中车株洲电力机车研究所有限公司 | Starting method and device for magnetic suspension high-speed train |
| CN112537208B (en) * | 2019-09-23 | 2022-05-03 | 中车株洲电力机车研究所有限公司 | Starting method and device for magnetic suspension high-speed train |
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Application publication date: 20190423 |